MachineOperand/MIParser: Do not print debug-use flag, infer it

[MatzeB]

Summary

The debug-use flag must be set exactly for uses on DBG_VALUEs. This is
so obvious that I we can trivially infer it while parsing. This will
reduce noise when printing while omitting an information that has very
little value to the user.

The parser will keep recognizing the flag for compatibility with old
mir files.

[thegameg]

LGTM

llvm/trunk/lib/CodeGen/MIRParser/MIParser.cpp

bool MIParser::parse(MachineInstr *&MI) {
   while (!Token.isNewlineOrEOF() && Token.isNot(MIToken::kw_pre_instr_symbol) &&
          Token.isNot(MIToken::kw_post_instr_symbol) &&
          Token.isNot(MIToken::kw_debug_location) &&
          Token.isNot(MIToken::coloncolon) && Token.isNot(MIToken::lbrace)) {
     auto Loc = Token.location();
     Optional<unsigned> TiedDefIdx;
     if (parseMachineOperandAndTargetFlags(MO, TiedDefIdx))
       return true;
+    if (OpCode == TargetOpcode::DBG_VALUE && MO.isReg())
+      MO.setIsDebug();
     Operands.push_back(
         ParsedMachineOperand(MO, Loc, Token.location(), TiedDefIdx));
     if (Token.isNewlineOrEOF() || Token.is(MIToken::coloncolon) ||
         Token.is(MIToken::lbrace))
       break;
     if (Token.isNot(MIToken::comma))
       return error("expected ',' before the next machine operand");
     lex();

llvm/trunk/lib/CodeGen/MachineOperand.cpp

case MachineOperand::MO_Register: {
     if (isDead())
       OS << "dead ";
     if (isKill())
       OS << "killed ";
     if (isUndef())
       OS << "undef ";
     if (isEarlyClobber())
       OS << "early-clobber ";
-    if (isDebug())
-      OS << "debug-use ";
     if (TargetRegisterInfo::isPhysicalRegister(getReg()) && isRenamable())
       OS << "renamable ";
+    // isDebug() is exactly true for register operands of a DBG_VALUE. So we
+    // simply infer it when parsing and do not need to print it.
 
     const MachineRegisterInfo *MRI = nullptr;
     if (TargetRegisterInfo::isVirtualRegister(Reg)) {
       if (const MachineFunction *MF = getMFIfAvailable(*this)) {
         MRI = &MF->getRegInfo();
       }
     }
 

llvm/trunk/test/CodeGen/AArch64/GlobalISel/debug-cpp.ll

 ; ModuleID = 'ntcopy.cpp'
 source_filename = "ntcopy.cpp"
 target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
 target triple = "aarch64-unknown-linux-gnu"
 
 %struct.NTCopy = type { i32 }
 
 ; CHECK-LABEL: name: _Z3foo6NTCopy
-; CHECK: DBG_VALUE debug-use %{{[0-9]+}}(p0), 0, !23, !DIExpression(), debug-location !24
+; CHECK: DBG_VALUE %{{[0-9]+}}(p0), 0, !23, !DIExpression(), debug-location !24
 ; Function Attrs: noinline nounwind optnone
 define dso_local i32 @_Z3foo6NTCopy(%struct.NTCopy* %o) #0 !dbg !7 {
 entry:
   call void @llvm.dbg.declare(metadata %struct.NTCopy* %o, metadata !23, metadata !DIExpression()), !dbg !24
   %x = getelementptr inbounds %struct.NTCopy, %struct.NTCopy* %o, i32 0, i32 0, !dbg !25
   %0 = load i32, i32* %x, align 4, !dbg !25
   ret i32 %0, !dbg !26
 }

llvm/trunk/test/CodeGen/AArch64/GlobalISel/debug-insts.ll

 entry:
   %in.addr = alloca i32, align 4
   store i32 %in, i32* %in.addr, align 4
   call void @llvm.dbg.declare(metadata i32* %in.addr, metadata !11, metadata !DIExpression()), !dbg !12
   ret void, !dbg !12
 }
 
 ; CHECK-LABEL: name: debug_declare_vla
-; CHECK: DBG_VALUE debug-use %{{[0-9]+}}(p0), 0, !14, !DIExpression(), debug-location !15
+; CHECK: DBG_VALUE %{{[0-9]+}}(p0), 0, !14, !DIExpression(), debug-location !15
 define void @debug_declare_vla(i32 %in) #0 !dbg !13 {
 entry:
   %vla.addr = alloca i32, i32 %in
   call void @llvm.dbg.declare(metadata i32* %vla.addr, metadata !14, metadata !DIExpression()), !dbg !15
   ret void, !dbg !15
 }
 
 ; CHECK-LABEL: name: debug_value
 ; CHECK: [[IN:%[0-9]+]]:_(s32) = COPY $w0
 define void @debug_value(i32 %in) #0 !dbg !16 {
   %addr = alloca i32
-; CHECK: DBG_VALUE debug-use [[IN]](s32), debug-use $noreg, !17, !DIExpression(), debug-location !18
+; CHECK: DBG_VALUE [[IN]](s32), $noreg, !17, !DIExpression(), debug-location !18
   call void @llvm.dbg.value(metadata i32 %in, i64 0, metadata !17, metadata !DIExpression()), !dbg !18
   store i32 %in, i32* %addr
-; CHECK: DBG_VALUE debug-use %1(p0), debug-use $noreg, !17, !DIExpression(DW_OP_deref), debug-location !18
+; CHECK: DBG_VALUE %1(p0), $noreg, !17, !DIExpression(DW_OP_deref), debug-location !18
   call void @llvm.dbg.value(metadata i32* %addr, i64 0, metadata !17, metadata !DIExpression(DW_OP_deref)), !dbg !18
 ; CHECK: DBG_VALUE 123, 0, !17, !DIExpression(), debug-location !18
   call void @llvm.dbg.value(metadata i32 123, i64 0, metadata !17, metadata !DIExpression()), !dbg !18
 ; CHECK: DBG_VALUE float 1.000000e+00, 0, !17, !DIExpression(), debug-location !18
   call void @llvm.dbg.value(metadata float 1.000000e+00, i64 0, metadata !17, metadata !DIExpression()), !dbg !18
 ; CHECK: DBG_VALUE $noreg, 0, !17, !DIExpression(), debug-location !18
   call void @llvm.dbg.value(metadata i32* null, i64 0, metadata !17, metadata !DIExpression()), !dbg !18
   ret void

llvm/trunk/test/CodeGen/AArch64/GlobalISel/regbankselect-dbg-value.mir

 name:            test_dbg_value
 legalized:       true
 # CHECK: registers:
 # CHECK-NEXT:  - { id: 0, class: gpr, preferred-register: '' }
 body: |
   bb.0:
     liveins: $w0
     %0:_(s32) = COPY $w0
-    ; CHECK: DBG_VALUE debug-use %0(s32), debug-use $noreg, !7, !DIExpression(), debug-location !9
-    DBG_VALUE debug-use %0(s32), debug-use $noreg, !7, !DIExpression(), debug-location !9
+    ; CHECK: DBG_VALUE %0(s32), $noreg, !7, !DIExpression(), debug-location !9
+    DBG_VALUE %0(s32), $noreg, !7, !DIExpression(), debug-location !9
 
     ; CHECK: DBG_VALUE $noreg, 0, !7, !DIExpression(), debug-location !9
     DBG_VALUE $noreg, 0, !7, !DIExpression(), debug-location !9
 ...

llvm/trunk/test/CodeGen/AArch64/GlobalISel/select-dbg-value.mir

 regBankSelected: true
 body: |
   bb.0:
     liveins: $w0
     ; CHECK-LABEL: name: test_dbg_value
     ; CHECK: [[COPY:%[0-9]+]]:gpr32 = COPY $w0
     ; CHECK: [[ADDWrr:%[0-9]+]]:gpr32 = ADDWrr [[COPY]], [[COPY]]
     ; CHECK: $w0 = COPY [[ADDWrr]]
-    ; CHECK: DBG_VALUE debug-use [[ADDWrr]], debug-use $noreg, !7, !DIExpression(), debug-location !9
+    ; CHECK: DBG_VALUE [[ADDWrr]], $noreg, !7, !DIExpression(), debug-location !9
     %0:gpr(s32) = COPY $w0
     %1:gpr(s32) = G_ADD %0, %0
     $w0 = COPY %1(s32)
-    DBG_VALUE debug-use %1(s32), debug-use $noreg, !7, !DIExpression(), debug-location !9
+    DBG_VALUE %1(s32), $noreg, !7, !DIExpression(), debug-location !9
 ...
 
 ---
 name:            test_dbg_value_dead
 legalized:       true
 regBankSelected: true
 body: |
   bb.0:
     liveins: $w0
     ; CHECK-LABEL: name: test_dbg_value_dead
     ; CHECK-NOT: COPY
-    ; CHECK: DBG_VALUE debug-use $noreg, debug-use $noreg, !7, !DIExpression(), debug-location !9
+    ; CHECK: DBG_VALUE $noreg, $noreg, !7, !DIExpression(), debug-location !9
     %0:gpr(s32) = COPY $w0
-    DBG_VALUE debug-use %0(s32), debug-use $noreg, !7, !DIExpression(), debug-location !9
+    DBG_VALUE %0(s32), $noreg, !7, !DIExpression(), debug-location !9
 ...

llvm/trunk/test/CodeGen/AArch64/phi-dbg.ll

 
 ; CHECK: bb.2.bb2:
 ; CHECK:  [[REG0:%[0-9]+]]:gpr32 = MOVi32imm 12
 ; CHECK:  [[PHIREG:%[0-9]+]]:gpr32 = COPY [[REG0]]
 
 bb3:
 ; CHECK: bb.3.bb3:
 ; CHECK:   [[PHIDEST:%[0-9]+]]:gpr32 = COPY [[PHIREG]]
-; CHECK-NEXT:   DBG_VALUE debug-use [[PHIDEST]]
+; CHECK-NEXT:   DBG_VALUE [[PHIDEST]]
   %.0 = phi i32 [ 12, %bb2 ], [ 1, %entry ]
   call void @llvm.dbg.value(metadata i32 %.0, i64 0, metadata !15, metadata !13), !dbg !16
 ; CHECK: [[ADD:%[0-9]+]]:gpr32 = nsw ADDWrr [[PHIDEST]]
-; CHECK-NEXT: DBG_VALUE debug-use [[ADD]]
+; CHECK-NEXT: DBG_VALUE [[ADD]]
   %v5 = add nsw i32 %.0, %a0, !dbg !22
   call void @llvm.dbg.value(metadata i32 %v5, i64 0, metadata !15, metadata !13), !dbg !16
   ret i32 %v5, !dbg !23
 }
 
 ; Function Attrs: nounwind readnone
 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
 

llvm/trunk/test/CodeGen/AMDGPU/fold-immediate-operand-shrink-with-carry.mir

 tracksRegLiveness: true
 
 body:             |
   bb.0:
     ; GCN-LABEL: name: shrink_scalar_imm_vgpr_v_add_i32_e64_dbg_only_carry_out_use
     ; GCN: [[S_MOV_B32_:%[0-9]+]]:sreg_32_xm0 = S_MOV_B32 12345
     ; GCN: [[DEF:%[0-9]+]]:vgpr_32 = IMPLICIT_DEF
     ; GCN: [[V_ADD_I32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_I32_e32 [[S_MOV_B32_]], [[DEF]], implicit-def $vcc, implicit $exec
-    ; GCN: DBG_VALUE debug-use %5:sreg_64_xexec, debug-use $noreg
+    ; GCN: DBG_VALUE %5:sreg_64_xexec, $noreg
     ; GCN: S_ENDPGM implicit [[V_ADD_I32_e32_]]
     %0:sreg_32_xm0 = S_MOV_B32 12345
     %1:vgpr_32 = IMPLICIT_DEF
     %2:vgpr_32 = IMPLICIT_DEF
     %3:vgpr_32 = IMPLICIT_DEF
 
     %4:vgpr_32, %5:sreg_64_xexec = V_ADD_I32_e64 %0, %1, implicit $exec
-    DBG_VALUE debug-use %5, debug-use $noreg
+    DBG_VALUE %5, $noreg
     S_ENDPGM implicit %4
 
 ...
 
 ---
 
 # Uses carry out in a normal pattern
 

llvm/trunk/test/CodeGen/AMDGPU/regcoalesce-dbg.mir

 # RUN: llc -march=amdgcn -run-pass simple-register-coalescing -o - %s | FileCheck %s
 
 # Test that register coalescing does not allow a call to
 # LIS->getInstructionIndex with a DBG_VALUE instruction, which does not have
 # a slot index.
 
 # CHECK: %13.sub2:sgpr_128 = S_MOV_B32 0
-# CHECK: DBG_VALUE{{.*}}debug-use %13.sub2
+# CHECK: DBG_VALUE{{.*}} %13.sub2
 
 --- |
   define amdgpu_kernel void @test(i32 addrspace(1)* %out) { ret void }
 
   !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !4, producer: "llvm", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !4)
   !1 = !DILocalVariable(name: "a", scope: !2, file: !4, line: 126, type: !6)
   !2 = distinct !DISubprogram(name: "test", scope: !4, file: !4, line: 1, type: !3, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !5)
   !3 = !DISubroutineType(types: !4)

llvm/trunk/test/CodeGen/AMDGPU/sched-crash-dbg-value.mir

--- |
   !6 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 81, isLocal: false, isDefinition: true, scopeLine: 86, flags: DIFlagPrototyped, isOptimized: true, unit: !0)
   !7 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
   !8 = !DILocation(line: 102, column: 8, scope: !6)
 
 ...
 ---
 
 # CHECK: name: sched_dbg_value_crash
-# CHECK: DBG_VALUE debug-use %99, debug-use $noreg, !5, !DIExpression(DW_OP_constu, 1, DW_OP_swap, DW_OP_xderef), debug-location !8
+# CHECK: DBG_VALUE %99, $noreg, !5, !DIExpression(DW_OP_constu, 1, DW_OP_swap, DW_OP_xderef), debug-location !8
 
 name:            sched_dbg_value_crash
 alignment:       0
 exposesReturnsTwice: false
 legalized:       false
 regBankSelected: false
 selected:        false
 tracksRegLiveness: true
bb.0.bb:
     %119:vgpr_32 = IMPLICIT_DEF
     %120:vgpr_32 = IMPLICIT_DEF
     %121:vgpr_32 = IMPLICIT_DEF
     %122:vgpr_32 = IMPLICIT_DEF
     %123:vgpr_32 = IMPLICIT_DEF
     %124:vgpr_32 = IMPLICIT_DEF
     %125:vgpr_32 = IMPLICIT_DEF
     %126:vgpr_32 = IMPLICIT_DEF
-    DBG_VALUE debug-use %103, debug-use _, !5, !DIExpression(DW_OP_constu, 1, DW_OP_swap, DW_OP_xderef), debug-location !8
+    DBG_VALUE %103, _, !5, !DIExpression(DW_OP_constu, 1, DW_OP_swap, DW_OP_xderef), debug-location !8
     ADJCALLSTACKUP 0, 0, implicit-def $sgpr32, implicit $sgpr32
     %127:sreg_64 = SI_PC_ADD_REL_OFFSET target-flags(amdgpu-rel32-lo) @func + 4, target-flags(amdgpu-rel32-hi) @func + 4, implicit-def dead $scc
     $sgpr4 = COPY $sgpr101
     $vgpr0 = COPY %124
     $vgpr1_vgpr2 = IMPLICIT_DEF
     $vgpr3 = COPY %126
     dead $sgpr30_sgpr31 = SI_CALL %127, @func, csr_amdgpu_highregs, implicit $sgpr0_sgpr1_sgpr2_sgpr3, implicit $sgpr4, implicit $vgpr0, implicit $vgpr1_vgpr2, implicit killed $vgpr3
     ADJCALLSTACKDOWN 0, 0, implicit-def $sgpr32, implicit $sgpr32
     %128:vreg_64, dead %129:sreg_64 = V_MAD_I64_I32 %20, %34, 0, 0, implicit $exec
     S_ENDPGM
 
 ...

llvm/trunk/test/CodeGen/ARM/ARMLoadStoreDBG.mir

frameInfo:
   hasMustTailInVarArgFunc: false
 stack:
   - { id: 0, type: spill-slot, offset: -4, size: 4, alignment: 4, callee-saved-register: '$lr', callee-saved-restored: false }
   - { id: 1, type: spill-slot, offset: -8, size: 4, alignment: 4, callee-saved-register: '$r7', callee-saved-restored: true }
 body:             |
   bb.0.entry:
     liveins: $r0, $r1, $r2, $r3, $lr, $r7
 
-    DBG_VALUE debug-use $r0, debug-use $noreg, !18, !27, debug-location !28
-    DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
-    DBG_VALUE debug-use $r2, debug-use $noreg, !20, !27, debug-location !28
-    DBG_VALUE debug-use $r3, debug-use $noreg, !21, !27, debug-location !28
+    DBG_VALUE $r0, $noreg, !18, !27, debug-location !28
+    DBG_VALUE $r1, $noreg, !19, !27, debug-location !28
+    DBG_VALUE $r2, $noreg, !20, !27, debug-location !28
+    DBG_VALUE $r3, $noreg, !21, !27, debug-location !28
     t2CMPri $r3, 4, 14, $noreg, implicit-def $cpsr, debug-location !31
     t2Bcc %bb.2.if.end, 2, killed $cpsr
 
   bb.1:
     liveins: $lr, $r7
 
-    DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
+    DBG_VALUE $r1, $noreg, !19, !27, debug-location !28
     $r0 = t2MOVi -1, 14, $noreg, $noreg
-    DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
+    DBG_VALUE $r1, $noreg, !19, !27, debug-location !28
     tBX_RET 14, $noreg, implicit $r0, debug-location !34
 
   bb.2.if.end:
     liveins: $r0, $r2, $r3, $r7, $lr
 
     $sp = frame-setup t2STMDB_UPD $sp, 14, $noreg, killed $r7, killed $lr
     frame-setup CFI_INSTRUCTION def_cfa_offset 8
     frame-setup CFI_INSTRUCTION offset $lr, -4
     frame-setup CFI_INSTRUCTION offset $r7, -8
-    DBG_VALUE debug-use $r0, debug-use $noreg, !18, !27, debug-location !28
-    DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
-    DBG_VALUE debug-use $r2, debug-use $noreg, !20, !27, debug-location !28
-    DBG_VALUE debug-use $r3, debug-use $noreg, !21, !27, debug-location !28
+    DBG_VALUE $r0, $noreg, !18, !27, debug-location !28
+    DBG_VALUE $r1, $noreg, !19, !27, debug-location !28
+    DBG_VALUE $r2, $noreg, !20, !27, debug-location !28
+    DBG_VALUE $r3, $noreg, !21, !27, debug-location !28
     $r1 = COPY killed $r2, debug-location !32
-    DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
+    DBG_VALUE $r1, $noreg, !19, !27, debug-location !28
     $r2 = COPY killed $r3, debug-location !32
     tBL 14, $noreg, @g, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit $r1, implicit $r2, implicit-def $sp, debug-location !32
     $r0 = t2MOVi 0, 14, $noreg, $noreg
     $sp = t2LDMIA_UPD $sp, 14, $noreg, def $r7, def $lr
     tBX_RET 14, $noreg, implicit $r0, debug-location !34
 # Verify that the DBG_VALUE is ignored.
 # CHECK: $sp = t2LDMIA_RET $sp, 14, $noreg, def $r7, def $pc, implicit $r0
 
 ...

llvm/trunk/test/CodeGen/ARM/dbg-range-extension.mir

 # }
 
 # CHECK: [[VAR_A:![0-9]+]] = !DILocalVariable(name: "a",
 # CHECK: [[VAR_B:![0-9]+]] = !DILocalVariable(name: "b",
 # CHECK: [[VAR_C:![0-9]+]] = !DILocalVariable(name: "c",
 # CHECK: [[VAR_I:![0-9]+]] = !DILocalVariable(name: "i",
 
 # CHECK: bb.0.entry
-# CHECK: DBG_VALUE debug-use $r0, debug-use $noreg, [[VAR_A]]
-# CHECK: DBG_VALUE debug-use [[REG_A:\$r[0-9]+]], debug-use $noreg, [[VAR_A]]
-# CHECK: DBG_VALUE debug-use [[REG_B:\$r[0-9]+]], debug-use $noreg, [[VAR_B]]
+# CHECK: DBG_VALUE $r0, $noreg, [[VAR_A]]
+# CHECK: DBG_VALUE [[REG_A:\$r[0-9]+]], $noreg, [[VAR_A]]
+# CHECK: DBG_VALUE [[REG_B:\$r[0-9]+]], $noreg, [[VAR_B]]
 
 # CHECK: bb.1.if.then
-# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use $noreg, [[VAR_B]]
-# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use $noreg, [[VAR_A]]
-# CHECK: DBG_VALUE debug-use [[REG_C:\$r[0-9]+]], debug-use $noreg, [[VAR_C]]
+# CHECK: DBG_VALUE [[REG_B]], $noreg, [[VAR_B]]
+# CHECK: DBG_VALUE [[REG_A]], $noreg, [[VAR_A]]
+# CHECK: DBG_VALUE [[REG_C:\$r[0-9]+]], $noreg, [[VAR_C]]
 # CHECK: DBG_VALUE 1, 0, [[VAR_I]]
 
 # CHECK: bb.2.for.body
-# CHECK: DBG_VALUE debug-use [[REG_I:\$r[0-9]+]], debug-use $noreg, [[VAR_I]]
-# CHECK: DBG_VALUE debug-use [[REG_C]], debug-use $noreg, [[VAR_C]]
-# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use $noreg, [[VAR_B]]
-# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use $noreg, [[VAR_A]]
-# CHECK: DBG_VALUE debug-use [[REG_I]], debug-use $noreg, [[VAR_I]]
+# CHECK: DBG_VALUE [[REG_I:\$r[0-9]+]], $noreg, [[VAR_I]]
+# CHECK: DBG_VALUE [[REG_C]], $noreg, [[VAR_C]]
+# CHECK: DBG_VALUE [[REG_B]], $noreg, [[VAR_B]]
+# CHECK: DBG_VALUE [[REG_A]], $noreg, [[VAR_A]]
+# CHECK: DBG_VALUE [[REG_I]], $noreg, [[VAR_I]]
 
 # CHECK: bb.3.for.cond
-# CHECK: DBG_VALUE debug-use [[REG_C]], debug-use $noreg, [[VAR_C]]
-# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use $noreg, [[VAR_B]]
-# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use $noreg, [[VAR_A]]
-# CHECK: DBG_VALUE debug-use [[REG_I]], debug-use $noreg, [[VAR_I]]
+# CHECK: DBG_VALUE [[REG_C]], $noreg, [[VAR_C]]
+# CHECK: DBG_VALUE [[REG_B]], $noreg, [[VAR_B]]
+# CHECK: DBG_VALUE [[REG_A]], $noreg, [[VAR_A]]
+# CHECK: DBG_VALUE [[REG_I]], $noreg, [[VAR_I]]
 
 # CHECK: bb.4.for.cond.cleanup
-# CHECK: DBG_VALUE debug-use [[REG_C]], debug-use $noreg, [[VAR_C]]
-# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use $noreg, [[VAR_B]]
-# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use $noreg, [[VAR_A]]
+# CHECK: DBG_VALUE [[REG_C]], $noreg, [[VAR_C]]
+# CHECK: DBG_VALUE [[REG_B]], $noreg, [[VAR_B]]
+# CHECK: DBG_VALUE [[REG_A]], $noreg, [[VAR_A]]
 
 # CHECK: bb.5.if.end
-# CHECK: DBG_VALUE debug-use [[REG_B]], debug-use $noreg, [[VAR_B]]
-# CHECK: DBG_VALUE debug-use [[REG_A]], debug-use $noreg, [[VAR_A]]
+# CHECK: DBG_VALUE [[REG_B]], $noreg, [[VAR_B]]
+# CHECK: DBG_VALUE [[REG_A]], $noreg, [[VAR_A]]
 --- |
   ; ModuleID = '/data/kwalker/work/OpenSource-llvm/llvm/test/CodeGen/ARM/dbg-range-extension.ll'
   source_filename = "/data/kwalker/work/OpenSource-llvm/llvm/test/CodeGen/ARM/dbg-range-extension.ll"
   target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
   target triple = "arm---eabi"
   
   ; Function Attrs: minsize nounwind optsize
   define void @func(i32 %a) local_unnamed_addr #0 !dbg !8 {
bb.0.entry:
     $sp = frame-setup STMDB_UPD $sp, 14, $noreg, killed $r4, killed $r5, killed $r6, killed $r7, killed $r11, killed $lr
     frame-setup CFI_INSTRUCTION def_cfa_offset 24
     frame-setup CFI_INSTRUCTION offset $lr, -4
     frame-setup CFI_INSTRUCTION offset $r11, -8
     frame-setup CFI_INSTRUCTION offset $r7, -12
     frame-setup CFI_INSTRUCTION offset $r6, -16
     frame-setup CFI_INSTRUCTION offset $r5, -20
     frame-setup CFI_INSTRUCTION offset $r4, -24
-    DBG_VALUE debug-use $r0, debug-use $noreg, !13, !20, debug-location !21
+    DBG_VALUE $r0, $noreg, !13, !20, debug-location !21
     $r4 = MOVr killed $r0, 14, $noreg, $noreg
-    DBG_VALUE debug-use $r4, debug-use $noreg, !13, !20, debug-location !21
+    DBG_VALUE $r4, $noreg, !13, !20, debug-location !21
     $r0 = MOVi 10, 14, $noreg, _, debug-location !22
     $r1 = MOVi 11, 14, $noreg, _, debug-location !22
     BL @func2, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit killed $r1, implicit-def $sp, implicit-def $r0, debug-location !22
     $r5 = MOVr killed $r0, 14, $noreg, _, debug-location !22
-    DBG_VALUE debug-use $r5, debug-use $noreg, !14, !20, debug-location !23
+    DBG_VALUE $r5, $noreg, !14, !20, debug-location !23
     CMPri $r4, 0, 14, $noreg, implicit-def $cpsr, debug-location !25
     Bcc %bb.5.if.end, 0, killed $cpsr
   
   bb.1.if.then:
     liveins: $r4, $r5
   
     $r0 = MOVi 12, 14, $noreg, _, debug-location !26
     $r1 = MOVi 13, 14, $noreg, _, debug-location !26
     BL @func2, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit killed $r1, implicit-def $sp, implicit-def $r0, debug-location !26
     $r6 = MOVr killed $r0, 14, $noreg, _, debug-location !26
-    DBG_VALUE debug-use $r6, debug-use $noreg, !15, !20, debug-location !27
+    DBG_VALUE $r6, $noreg, !15, !20, debug-location !27
     $r7 = MOVi 1, 14, $noreg, $noreg
     DBG_VALUE 1, 0, !18, !20, debug-location !28
     B %bb.3.for.cond
   
   bb.2.for.body:
     liveins: $r4, $r5, $r6, $r7
   
     $r1 = ADDrr $r5, $r7, 14, $noreg, _, debug-location !36
     $r0 = MOVr $r7, 14, $noreg, _, debug-location !36
     BL @func2, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit killed $r1, implicit-def $sp, implicit-def dead $r0, debug-location !36
     $r7 = ADDri killed $r7, 1, 14, $noreg, _, debug-location !38
-    DBG_VALUE debug-use $r7, debug-use $noreg, !18, !20, debug-location !28
+    DBG_VALUE $r7, $noreg, !18, !20, debug-location !28
   
   bb.3.for.cond:
     liveins: $r4, $r5, $r6, $r7
   
-    DBG_VALUE debug-use $r7, debug-use $noreg, !18, !20, debug-location !28
+    DBG_VALUE $r7, $noreg, !18, !20, debug-location !28
     CMPrr $r7, $r4, 14, $noreg, implicit-def $cpsr, debug-location !33
     Bcc %bb.2.for.body, 11, killed $cpsr, debug-location !33
   
   bb.4.for.cond.cleanup:
     liveins: $r4, $r5, $r6
   
     $r0 = MOVr $r5, 14, $noreg, _, debug-location !34
     $r1 = MOVr killed $r6, 14, $noreg, _, debug-location !34

llvm/trunk/test/CodeGen/ARM/sched-it-debug-nodes.mir

--- |
   ; NOTE: This is checking that the register in the DEBUG_VALUE node is not
   ; accidentally being marked as KILL.  The DBG_VALUE node gets introduced in
   ; If-Conversion, and gets bundled into the IT block.  The Post RA Scheduler
   ; attempts to schedule the Machine Instr, and tries to tag the register in the
   ; debug value as KILL'ed, resulting in a DEBUG_VALUE node changing codegen!  (or
   ; hopefully, triggering an assert).
 
   ; CHECK: BUNDLE implicit-def dead $itstate{{.*}} {
-  ; CHECK: DBG_VALUE debug-use $r1, debug-use $noreg, !"u"
+  ; CHECK: DBG_VALUE $r1, $noreg, !"u"
   ; CHECK-NOT: DBG_VALUE killed $r1, $noreg, !"u"
 
   declare arm_aapcscc void @g(%struct.s*, i8*, i32) #1
 
   ; Function Attrs: nounwind readnone
   declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2
 
   attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
frameInfo:
   hasMustTailInVarArgFunc: false
 stack:
   - { id: 0, type: spill-slot, offset: -4, size: 4, alignment: 4, callee-saved-register: '$lr', callee-saved-restored: false }
   - { id: 1, type: spill-slot, offset: -8, size: 4, alignment: 4, callee-saved-register: '$r7' }
 body:             |
   bb.0.entry:
     liveins: $r0, $r1, $r2, $r3, $lr, $r7
 
-    DBG_VALUE debug-use $r0, debug-use $noreg, !18, !27, debug-location !28
-    DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
-    DBG_VALUE debug-use $r2, debug-use $noreg, !20, !27, debug-location !28
-    DBG_VALUE debug-use $r3, debug-use $noreg, !21, !27, debug-location !28
+    DBG_VALUE $r0, $noreg, !18, !27, debug-location !28
+    DBG_VALUE $r1, $noreg, !19, !27, debug-location !28
+    DBG_VALUE $r2, $noreg, !20, !27, debug-location !28
+    DBG_VALUE $r3, $noreg, !21, !27, debug-location !28
     t2CMPri $r3, 4, 14, $noreg, implicit-def $cpsr, debug-location !31
-    DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
+    DBG_VALUE $r1, $noreg, !19, !27, debug-location !28
     $r0 = t2MOVi -1, 3, $cpsr, $noreg, implicit undef $r0
-    DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
+    DBG_VALUE $r1, $noreg, !19, !27, debug-location !28
     tBX_RET 3, $cpsr, implicit $r0, debug-location !34
     $sp = frame-setup t2STMDB_UPD $sp, 14, $noreg, killed $r7, killed $lr
     frame-setup CFI_INSTRUCTION def_cfa_offset 8
     frame-setup CFI_INSTRUCTION offset $lr, -4
     frame-setup CFI_INSTRUCTION offset $r7, -8
-    DBG_VALUE debug-use $r0, debug-use $noreg, !18, !27, debug-location !28
-    DBG_VALUE debug-use $r1, debug-use $noreg, !19, !27, debug-location !28
-    DBG_VALUE debug-use $r2, debug-use $noreg, !20, !27, debug-location !28
-    DBG_VALUE debug-use $r3, debug-use $noreg, !21, !27, debug-location !28
+    DBG_VALUE $r0, $noreg, !18, !27, debug-location !28
+    DBG_VALUE $r1, $noreg, !19, !27, debug-location !28
+    DBG_VALUE $r2, $noreg, !20, !27, debug-location !28
+    DBG_VALUE $r3, $noreg, !21, !27, debug-location !28
     $r1 = tMOVr killed $r2, 14, $noreg, debug-location !32
     $r2 = tMOVr killed $r3, 14, $noreg, debug-location !32
     tBL 14, $noreg, @g, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit $r0, implicit $r1, implicit $r2, implicit-def $sp, debug-location !32
     $r0 = t2MOVi 0, 14, $noreg, $noreg
     $sp = t2LDMIA_RET $sp, 14, $noreg, def $r7, def $pc, implicit $r0
 
 ...

llvm/trunk/test/CodeGen/Hexagon/early-if-debug.mir

 # RUN: llc -march=hexagon -eif-limit=4 -run-pass hexagon-early-if -o - %s | FileCheck %s
 # Check that even with the limit of 4 instructions, the block bb.1 is
 # if-converted.
 
 # CHECK-LABEL: bb.0:
 # CHECK: %0:intregs = COPY $r0
 # CHECK: %1:predregs = C2_cmpeqi %0, 0
 # CHECK: %2:intregs = A2_tfrsi 123
-# CHECK: DBG_VALUE debug-use %0, debug-use $noreg
-# CHECK: DBG_VALUE debug-use %0, debug-use $noreg
-# CHECK: DBG_VALUE debug-use %0, debug-use $noreg
-# CHECK: DBG_VALUE debug-use %0, debug-use $noreg
-# CHECK: DBG_VALUE debug-use %0, debug-use $noreg
+# CHECK: DBG_VALUE %0, $noreg
+# CHECK: DBG_VALUE %0, $noreg
+# CHECK: DBG_VALUE %0, $noreg
+# CHECK: DBG_VALUE %0, $noreg
+# CHECK: DBG_VALUE %0, $noreg
 # CHECK: %3:intregs = A2_tfrsi 321
 # CHECK: %5:intregs = C2_mux %1, %2, %3
 
 --- |
   define void @foo() {
     ret void
   }
   !1 = !DIExpression()
bb.0:
 
     %0 = COPY $r0
     %1 = C2_cmpeqi %0, 0
     %2 = A2_tfrsi 123
     J2_jumpt %1, %bb.2, implicit-def dead $pc
     J2_jump %bb.1, implicit-def dead $pc
 
   bb.1:
-    DBG_VALUE debug-use %0, debug-use $noreg, !1, !1
-    DBG_VALUE debug-use %0, debug-use $noreg, !1, !1
-    DBG_VALUE debug-use %0, debug-use $noreg, !1, !1
-    DBG_VALUE debug-use %0, debug-use $noreg, !1, !1
-    DBG_VALUE debug-use %0, debug-use $noreg, !1, !1
+    DBG_VALUE %0, $noreg, !1, !1
+    DBG_VALUE %0, $noreg, !1, !1
+    DBG_VALUE %0, $noreg, !1, !1
+    DBG_VALUE %0, $noreg, !1, !1
+    DBG_VALUE %0, $noreg, !1, !1
     %3 = A2_tfrsi 321
 
   bb.2:
     %4 = PHI %2, %bb.0, %3, %bb.1
 
 ...

llvm/trunk/test/CodeGen/MIR/X86/diexpr-win32.mir

 body:             |
   bb.0.entry:
     liveins: $esi
 
     frame-setup PUSH32r killed $esi, implicit-def $esp, implicit $esp
     CFI_INSTRUCTION def_cfa_offset 8
     CFI_INSTRUCTION offset $esi, -8
     $esi = MOV32rm $esp, 1, _, 8, _ :: (load 4 from %fixed-stack.2)
-    DBG_VALUE debug-use $esp, 0, !26, !10, debug-location !25
-    DBG_VALUE debug-use $esp, 0, !23, !DIExpression(DW_OP_plus_uconst, 8, DW_OP_deref), debug-location !25
+    DBG_VALUE $esp, 0, !26, !10, debug-location !25
+    DBG_VALUE $esp, 0, !23, !DIExpression(DW_OP_plus_uconst, 8, DW_OP_deref), debug-location !25
     CALLpcrel32 @getString, csr_32, implicit $esp, implicit-def $esp, implicit-def $eax, debug-location !29
     $ecx = MOV32rm $eax, 1, _, 0, _, debug-location !29 :: (dereferenceable load 4 from %ir.1)
     $edx = MOV32rm $eax, 1, _, 4, _, debug-location !29 :: (dereferenceable load 4 from %ir.1 + 4)
     MOV32mr $esi, 1, _, 0, _, killed $ecx, debug-location !29 :: (store 4 into %ir.0)
     MOV32mr $esi, 1, _, 4, _, killed $edx, debug-location !29 :: (store 4 into %ir.0 + 4)
     $eax = MOV32rm killed $eax, 1, _, 8, _, debug-location !29 :: (dereferenceable load 4 from %ir.1 + 8)
     MOV32mr $esi, 1, _, 8, _, killed $eax, debug-location !29 :: (store 4 into %ir.0 + 8)
     $eax = COPY killed $esi, debug-location !30
fixedStack:
   - { id: 1, type: default, offset: 0, size: 4, alignment: 4, stack-id: 0,
       isImmutable: true, isAliased: false, callee-saved-register: '' }
 stack:
 constants:
 body:             |
   bb.0.entry:
     $eax = MOV32rm $esp, 1, _, 4, _ :: (load 4 from %fixed-stack.1)
     $eax = MOV32rm killed $eax, 1, _, 0, _, debug-location !34 :: (load 4 from %ir.0)
-    DBG_VALUE debug-use $eax, 0, !35, !DIExpression(DW_OP_constu, 4, DW_OP_minus), debug-location !34
+    DBG_VALUE $eax, 0, !35, !DIExpression(DW_OP_constu, 4, DW_OP_minus), debug-location !34
     $eax = ADD32rm killed $eax, $esp, 1, _, 8, _, implicit-def dead $eflags, debug-location !36 :: (load 4 from %fixed-stack.0)
     RET 0, $eax, debug-location !36
 
 ...

llvm/trunk/test/CodeGen/MIR/X86/instructions-debug-location.mir

registers:
   - { id: 0, class: gr32 }
 frameInfo:
   maxAlignment:  4
 stack:
   - { id: 0, name: x.addr, size: 4, alignment: 4 }
 body: |
   bb.0.entry:
     liveins: $edi
-    ; CHECK: DBG_VALUE debug-use $noreg, 0, !11, !DIExpression(), debug-location !12
+    ; CHECK: DBG_VALUE $noreg, 0, !11, !DIExpression(), debug-location !12
+    ; CHECK: DBG_VALUE $noreg, 0, !11, !DIExpression(), debug-location !12
     ; CHECK: $eax = COPY %0, debug-location !13
     ; CHECK: RETQ $eax, debug-location !13
     %0 = COPY $edi
+    DBG_VALUE _, 0, !12, !DIExpression(), debug-location !13
+    ; Test whether debug-use is still recognized for compatibility with old
+    ; files.
     DBG_VALUE debug-use _, 0, !12, !DIExpression(), debug-location !13
     MOV32mr %stack.0.x.addr, 1, _, 0, _, %0
     $eax = COPY %0, debug-location !14
     RETQ $eax, debug-location !14
 ...
 ---
 name:            test_typed_immediates
 tracksRegLiveness: true

llvm/trunk/test/CodeGen/MIR/X86/pr38773.mir

body:             |
   bb.2.sw.bb1:
     liveins: $ecx
   
     $eax = MOV32ri 4
     $edx = MOV32r0 implicit-def dead $eflags
     IDIV32r killed renamable $ecx, implicit-def $eax, implicit-def dead $edx, implicit-def dead $eflags, implicit $eax, implicit killed $edx
     renamable $ecx = COPY $eax
     ; CHECK:        IDIV32r killed renamable $ecx
-    ; CHECK-NEXT:   DBG_VALUE debug-use $eax, debug-use $noreg, !12, !DIExpression(), debug-location !13
-    DBG_VALUE debug-use $ecx, debug-use $noreg, !12, !DIExpression(), debug-location !13
+    ; CHECK-NEXT:   DBG_VALUE $eax, $noreg, !12, !DIExpression(), debug-location !13
+    DBG_VALUE $ecx, $noreg, !12, !DIExpression(), debug-location !13
     $eax = COPY killed renamable $ecx
     RET 0, $eax
 
 ...

llvm/trunk/test/CodeGen/PowerPC/debuginfo-split-int.ll

 ;
 ; This file is a slight tweak of that output, with irrelevant
 ; lifetime intrinsics, metadata, and debug info being removed.
 
 ; CHECK: [[DL:![0-9]+]] = !DILocalVariable(name: "result"
 ;
 ; High 32 bits in R3, low 32 bits in R4
 ; CHECK: %0:gprc = COPY $r3
-; CHECK: DBG_VALUE debug-use %0, debug-use $noreg, [[DL]], !DIExpression(DW_OP_LLVM_fragment, 0, 32)
+; CHECK: DBG_VALUE %0, $noreg, [[DL]], !DIExpression(DW_OP_LLVM_fragment, 0, 32)
 ; CHECK: %1:gprc = COPY $r4
-; CHECK: DBG_VALUE debug-use %1, debug-use $noreg, [[DL]], !DIExpression(DW_OP_LLVM_fragment, 32, 32)
+; CHECK: DBG_VALUE %1, $noreg, [[DL]], !DIExpression(DW_OP_LLVM_fragment, 32, 32)
 define void @bar() local_unnamed_addr #0 !dbg !6 {
   %1 = alloca i64, align 8
   %2 = tail call i64 @foo()
   tail call void @llvm.dbg.value(metadata i64 %2, metadata !10, metadata !DIExpression()), !dbg !13
   store volatile i64 %2, i64* %1, align 8
   ret void
 }
 

llvm/trunk/test/CodeGen/PowerPC/debuginfo-stackarg.ll

 ; CHECK: id: 1, type: default, offset: 8, size: 4
 ; CHECK-NOT: id: 2
 ; CHECK-LABEL: stack:
 ;
 ; Finally check the resulting function body.
 ; We expect to find a DBG_VALUE refering to the metadata id for bar5, using the lowest
 ; of the two fixed stack offsets found earlier.
 ; CHECK-LABEL: body:
-; CHECK: DBG_VALUE debug-use $r1, 0, !17, !DIExpression(DW_OP_plus_uconst, 8)
+; CHECK: DBG_VALUE $r1, 0, !17, !DIExpression(DW_OP_plus_uconst, 8)
 entry:
   tail call void @llvm.dbg.value(metadata i64 %bar1, metadata !13, metadata !DIExpression()), !dbg !18
   tail call void @llvm.dbg.value(metadata i64 %bar2, metadata !14, metadata !DIExpression()), !dbg !19
   tail call void @llvm.dbg.value(metadata i64 %bar3, metadata !15, metadata !DIExpression()), !dbg !20
   tail call void @llvm.dbg.value(metadata i64 %bar4, metadata !16, metadata !DIExpression()), !dbg !21
   tail call void @llvm.dbg.value(metadata i64 %bar5, metadata !17, metadata !DIExpression()), !dbg !22
   %add = add nsw i64 %bar2, %bar1, !dbg !23
   %add1 = add nsw i64 %add, %bar3, !dbg !24

llvm/trunk/test/CodeGen/X86/coalesce-dbg-value-subreg-rewrite.mir

 
 ...
 ---
 name:            main
 tracksRegLiveness: true
 body:             |
   bb.0.entry:
     %0:gr16_abcd = MOV16ri 0
-    DBG_VALUE debug-use %0.sub_8bit:gr16_abcd, debug-use $noreg, !11, !DIExpression(), debug-location !13
+    DBG_VALUE %0.sub_8bit:gr16_abcd, $noreg, !11, !DIExpression(), debug-location !13
     undef %6.sub_8bit:gr16_abcd = COPY killed %0.sub_8bit
     dead $dx = COPY killed %6
 
 ...
 
 # Verify that we get $dl in the DBG_VALUE (and not $dx.sub_8bit as we used to
 # do before the bugfix, which resulted in "Bad machine code: Illegal
 # subregister index for physical register").
 #
 # CHECK:      bb.0.entry:
 # CHECK-NEXT:    $dx = MOV16ri 0
-# CHECK-NEXT:    DBG_VALUE debug-use $dl,
+# CHECK-NEXT:    DBG_VALUE $dl,

llvm/trunk/test/CodeGen/X86/dbg-changes-codegen-branch-folding2.mir

bb.16:
   
     JMP_1 %bb.1
   
   bb.17.for.body.11:
     successors: %bb.1
     liveins: $rdi
   
     dead renamable $al = MOV8rm $rsp, 1, $noreg, -121, $noreg 
-    DBG_VALUE debug-use $al, debug-use $noreg, !16, !DIExpression(), debug-location !19
+    DBG_VALUE $al, $noreg, !16, !DIExpression(), debug-location !19
     renamable $ecx = XOR32rr undef $ecx, undef $ecx, implicit-def dead $eflags
     JMP_1 %bb.1
 ...

llvm/trunk/test/CodeGen/X86/dbg-value-superreg-copy.mir

 ---
 name:            foo
 tracksRegLiveness: true
 body:             |
   bb.0:
     %0:gr16_abcd = MOV16ri 1
 
   bb.1:
-    DBG_VALUE debug-use %0.sub_8bit_hi, debug-use $noreg, !7, !DIExpression(), debug-location !9
+    DBG_VALUE %0.sub_8bit_hi, $noreg, !7, !DIExpression(), debug-location !9
     %1:gr16 = COPY %0
     %2:gr16 = COPY %0
 
   bb.2:
     $ax = COPY %1
     $dx = COPY %2
     RETQ killed $ax, killed $dx
 ...

llvm/trunk/test/CodeGen/X86/lea-opt-with-debug.mir

frameInfo:
   hasMustTailInVarArgFunc: false
 body:             |
   bb.0 (%ir-block.0):
     successors: %bb.1(0x80000000)
 
     ; CHECK: %3:gr64_nosp = LEA64r %2, 2, %2, 0, $noreg, debug-location !13
     ; CHECK-NEXT: %4:gr64 = LEA64r %1, 4, %3, 0, $noreg, debug-location !13
     ; CHECK-NOT: %0:gr64 = LEA64r %1, 4, %3, 8, $noreg, debug-location !14
-    ; CHECK: DBG_VALUE debug-use %4, debug-use $noreg, !11, !DIExpression(DW_OP_plus_uconst, 8, DW_OP_stack_value), debug-location !15
+    ; CHECK: DBG_VALUE %4, $noreg, !11, !DIExpression(DW_OP_plus_uconst, 8, DW_OP_stack_value), debug-location !15
 
     %1 = MOV64rm $rip, 1, $noreg, @c, $noreg, debug-location !13 :: (dereferenceable load 8 from @c)
     %2 = MOVSX64rm32 $rip, 1, $noreg, @a, $noreg, debug-location !13 :: (dereferenceable load 4 from @a)
     %3 = LEA64r %2, 2, %2, 0, $noreg, debug-location !13
     %4 = LEA64r %1, 4, %3, 0, $noreg, debug-location !13
     %5 = COPY %4.sub_32bit, debug-location !13
     MOV32mr $rip, 1, $noreg, @d, $noreg, killed %5, debug-location !13 :: (store 4 into @d)
     %0 = LEA64r %1, 4, %3, 8, $noreg, debug-location !14
-    DBG_VALUE debug-use %0, debug-use $noreg, !11, !DIExpression(), debug-location !15
+    DBG_VALUE %0, $noreg, !11, !DIExpression(), debug-location !15
 
     ; CHECK-LABEL: bb.1 (%ir-block.8):
     ; CHECK: %6:gr32 = MOV32rm %4, 1, $noreg, 8, $noreg, debug-location !17 :: (load 4 from %ir.7)
 
   bb.1 (%ir-block.8):
     successors: %bb.1(0x80000000)
 
     %6 = MOV32rm %0, 1, $noreg, 0, $noreg, debug-location !17 :: (load 4 from %ir.7)
     MOV32mr $rip, 1, $noreg, @d, $noreg, killed %6, debug-location !17 :: (store 4 into @d)
     JMP_1 %bb.1, debug-location !18
 
 ...

llvm/trunk/test/CodeGen/X86/machine-cp-debug.mir

 
 ---
 name: fred
 tracksRegLiveness: true
 body: |
   bb.0:
     liveins: $eax
     $ebx = COPY $eax
-    DBG_VALUE debug-use $ebx, debug-use _, !1, !1
+    DBG_VALUE $ebx, _, !1, !1
 ...

llvm/trunk/test/CodeGen/X86/opt_phis.mir

 name:            test
 tracksRegLiveness: true
 body:             |
   bb.0:
     %0:gr32 = IMPLICIT_DEF
 
   bb.1:
     %1:gr32 = PHI %0, %bb.0, %2, %bb.1
-    DBG_VALUE debug-use %1, debug-use _, !7, !DIExpression(), debug-location !6
+    DBG_VALUE %1, _, !7, !DIExpression(), debug-location !6
     %2:gr32 = IMPLICIT_DEF
     JMP_1 %bb.1
 ...
 
 # The PHI should be removed since it's only used in a DBG_VALUE
 # CHECK-LABEL: bb.1:
 # CHECK-NOT: PHI

llvm/trunk/test/CodeGen/X86/post-ra-sched-with-debug.mir

 stack:
   - { id: 0, offset: -36, size: 4, alignment: 4 }
 body:             |
   bb.0:
     successors: %bb.3, %bb.2
     liveins: $esi, $rdi, $r14, $rbx, $rbp
 
     ; CHECK:      [[REGISTER:\$r[a-z0-9]+]] = LEA64r {{\$r[a-z0-9]+}}, 1, $noreg, -20, $noreg
-    ; CHECK-NEXT: DBG_VALUE debug-use [[REGISTER]], debug-use $noreg, ![[J_VAR]], !DIExpression(), debug-location ![[J_LOC]]
-    ; CHECK-NEXT: DBG_VALUE debug-use [[REGISTER]], debug-use $noreg, ![[I_VAR]], !DIExpression(), debug-location ![[I_LOC]]
+    ; CHECK-NEXT: DBG_VALUE [[REGISTER]], $noreg, ![[J_VAR]], !DIExpression(), debug-location ![[J_LOC]]
+    ; CHECK-NEXT: DBG_VALUE [[REGISTER]], $noreg, ![[I_VAR]], !DIExpression(), debug-location ![[I_LOC]]
 
     frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
     CFI_INSTRUCTION def_cfa_offset 16
     CFI_INSTRUCTION offset $rbp, -16
     $rbp = frame-setup MOV64rr $rsp
     CFI_INSTRUCTION def_cfa_register $rbp
     frame-setup PUSH64r killed $r14, implicit-def $rsp, implicit $rsp
     frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
     $rsp = frame-setup SUB64ri8 $rsp, 16, implicit-def dead $eflags
     CFI_INSTRUCTION offset $rbx, -32
     CFI_INSTRUCTION offset $r14, -24
     $r14d = MOV32rr $esi
     $rbx = MOV64rr $rdi
     CALL64pcrel32 @_ZN1lC2Ei, csr_64, implicit $rsp, implicit $rdi, implicit $esi, implicit-def $rsp
     $rdi = LEA64r $rbx, 1, $noreg, 8, $noreg
-    DBG_VALUE debug-use $rdi, debug-use $noreg, !20, !17, debug-location !27
-    DBG_VALUE debug-use $rdi, debug-use $noreg, !10, !17, debug-location !18
+    DBG_VALUE $rdi, $noreg, !20, !17, debug-location !27
+    DBG_VALUE $rdi, $noreg, !10, !17, debug-location !18
     $rax = MOV64rm $rbx, 1, $noreg, 16, $noreg :: (load 8)
     MOV64mr $rbx, 1, $noreg, 8, $noreg, killed $rax :: (store 8)
     MOV64mr $rbx, 1, $noreg, 24, $noreg, $rdi :: (store 8)
     $eax = MOV32ri -1
     $cl = MOV8rr $r14b, implicit killed $r14d
     $eax = SHL32rCL killed $eax, implicit-def dead $eflags, implicit $cl
     MOV32mr $rbx, 1, $noreg, 32, $noreg, $eax :: (store 4, align 8)
     MOV32mi $rbp, 1, $noreg, -20, $noreg, 0 :: (store 4)
     $rcx = MOV64rm $rbx, 1, $noreg, 8, $noreg :: (load 8)
     MOV64mr $rip, 1, $noreg, @n, $noreg, $rcx :: (store 8)
     $edx = XOR32rr undef $edx, undef $edx, implicit-def dead $eflags, implicit-def $rdx
     TEST64rr $rcx, $rcx, implicit-def $eflags
     $esi = MOV32ri @o, implicit-def $rsi
     $rsi = CMOVNE64rr killed $rsi, $rdx, implicit killed $eflags
     $rsi = OR64rr killed $rsi, killed $rcx, implicit-def $eflags
     $rcx = LEA64r $rbp, 1, $noreg, -20, $noreg
-    DBG_VALUE debug-use $rcx, debug-use $noreg, !46, !17, debug-location !48
-    DBG_VALUE debug-use $rcx, debug-use $noreg, !39, !17, debug-location !44
-    DBG_VALUE debug-use $rbp, -20, !29, !17, debug-location !36
+    DBG_VALUE $rcx, $noreg, !46, !17, debug-location !48
+    DBG_VALUE $rcx, $noreg, !39, !17, debug-location !44
+    DBG_VALUE $rbp, -20, !29, !17, debug-location !36
     $rcx = CMOVNE64rr killed $rcx, killed $rdx, implicit killed $eflags
     $rcx = OR64rr killed $rcx, killed $rsi, implicit-def dead $eflags
     $rdx = MOVSX64rm32 $rbx, 1, $noreg, 0, $noreg :: (load 4, align 8)
     TEST32mr killed $rcx, 4, killed $rdx, 0, $noreg, killed $eax, implicit-def $eflags :: (load 4)
     JNE_1 %bb.2, implicit $eflags
     JMP_1 %bb.3
 
   bb.1:

llvm/trunk/test/CodeGen/X86/postra-ignore-dbg-instrs.mir

 
 ...
 ---
 # CHECK: name: x1
 # CHECK: bb.0:
 # CHECK-NOT: $eax = COPY $edi
 # CHECK: bb.1:
 # CHECK: renamable $eax = COPY $edi
-# CHECK-NEXT: DBG_VALUE debug-use $eax,
+# CHECK-NEXT: DBG_VALUE $eax,
 # CHECK: bb.2:
 name:            x1
 alignment:       4
 tracksRegLiveness: true
 body: |
   bb.0:
     successors: %bb.2, %bb.1; %bb.2, %bb.1
     liveins: $edi
-    DBG_VALUE debug-use $edi, debug-use $noreg, !14, !DIExpression(), debug-location !16
+    DBG_VALUE $edi, $noreg, !14, !DIExpression(), debug-location !16
     renamable $eax = COPY $edi
-    DBG_VALUE debug-use $eax, debug-use $noreg, !14, !DIExpression(), debug-location !16
+    DBG_VALUE $eax, $noreg, !14, !DIExpression(), debug-location !16
     CMP32mi8 $rip, 1, $noreg, @x0, $noreg, 0, implicit-def $eflags, debug-location !16
     JE_1 %bb.2, implicit killed $eflags, debug-location !16
     JMP_1 %bb.1, debug-location !16
 
   bb.1:
     liveins: $eax
     $edi = MOV32r0 implicit-def dead $eflags, debug-location !16
     $esi = COPY killed renamable $eax, debug-location !16
 
   bb.2:
     RET 0, debug-location !16
 ...

llvm/trunk/test/CodeGen/X86/shrink_wrap_dbg_value.mir

- { id: 1, type: default, offset: 0, size: 4, alignment: 4, stack-id: 0,
       callee-saved-restored: true }
 stack:           
 constants:       
 body:             |
   bb.0.entry:
     successors: %bb.4(0x40000000), %bb.1(0x40000000)
     liveins: $ecx, $edx
   
-    DBG_VALUE debug-use $edx, debug-use $noreg, !15, !DIExpression(), debug-location !25
-    DBG_VALUE debug-use $ecx, debug-use $noreg, !16, !DIExpression(), debug-location !26
+    DBG_VALUE $edx, $noreg, !15, !DIExpression(), debug-location !25
+    DBG_VALUE $ecx, $noreg, !16, !DIExpression(), debug-location !26
     $eax = COPY $ecx
     DBG_VALUE %fixed-stack.0, 0, !16, !DIExpression(), debug-location !26
     DBG_VALUE %fixed-stack.1, 0, !15, !DIExpression(), debug-location !25
     CMP32rr $eax, killed $edx, implicit-def $eflags, debug-location !27
     JL_1 %bb.4, implicit killed $eflags, debug-location !29
     JMP_1 %bb.1, debug-location !29
   
   bb.1.for.cond.preheader:
     successors: %bb.2(0x80000000)
   
     $esi = MOV32rm %fixed-stack.0, 1, $noreg, 0, $noreg :: (load 4 from %fixed-stack.0)
-    DBG_VALUE debug-use $esi, debug-use $noreg, !13, !DIExpression(), debug-location !19
+    DBG_VALUE $esi, $noreg, !13, !DIExpression(), debug-location !19
     $edi = MOV32rm %fixed-stack.1, 1, $noreg, 0, $noreg :: (load 4 from %fixed-stack.1)
-    DBG_VALUE debug-use $edi, debug-use $noreg, !14, !DIExpression(), debug-location !20
+    DBG_VALUE $edi, $noreg, !14, !DIExpression(), debug-location !20
     $edi = DEC32r killed $edi, implicit-def dead $eflags, debug-location !30
     $ebx = LEA32r %fixed-stack.1, 1, $noreg, 0, $noreg
   
   bb.2.for.cond:
     successors: %bb.2(0x7c000000), %bb.3(0x04000000)
     liveins: $ebx, $edi, $esi
   
     ADJCALLSTACKDOWN32 4, 0, 4, implicit-def dead $esp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $esp, implicit $ssp, debug-location !33

llvm/trunk/test/DebugInfo/AArch64/compiler-gen-bbs-livedebugvalues.ll

 ; RUN: llc -O0 -regalloc=fast -stop-after=livedebugvalues -o - < %s | \
 ; RUN:   FileCheck %s -implicit-check-not=DBG_VALUE
 
 target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
 target triple = "arm64-apple-ios12.1.0"
 
 declare void @use(i32 %x)
 
 define void @f1(i32 %x) !dbg !6 {
 ; CHECK-LABEL: name: f1
 entry:
 ; CHECK-LABEL: bb.0.entry:
   %var = add i32 %x, 1, !dbg !12
   call void @llvm.dbg.value(metadata i32 %var, metadata !9, metadata !DIExpression()), !dbg !12
-; CHECK: DBG_VALUE debug-use renamable $w0, debug-use $noreg, !9, !DIExpression(), debug-location !12
+; CHECK: DBG_VALUE renamable $w0, $noreg, !9, !DIExpression(), debug-location !12
 ; CHECK-NEXT: STRWui killed $w0, $sp, 3 :: (store 4 into %stack.0)
-; CHECK-NEXT: DBG_VALUE debug-use $sp, 0, !9, !DIExpression(DW_OP_plus_uconst, 12)
+; CHECK-NEXT: DBG_VALUE $sp, 0, !9, !DIExpression(DW_OP_plus_uconst, 12)
 
   br label %artificial-bb-1, !dbg !13
 
 artificial-bb-1:                                  ; preds = %entry
 ; CHECK-LABEL: bb.1.artificial-bb-1:
-; CHECK: DBG_VALUE debug-use $sp, 0, !9, !DIExpression(DW_OP_plus_uconst, 12)
+; CHECK: DBG_VALUE $sp, 0, !9, !DIExpression(DW_OP_plus_uconst, 12)
 
   br label %artificial-bb-2
 
 artificial-bb-2:                                  ; preds = %artificial-bb-1
 ; CHECK-LABEL: bb.2.artificial-bb-2:
-; CHECK: DBG_VALUE debug-use $sp, 0, !9, !DIExpression(DW_OP_plus_uconst, 12)
+; CHECK: DBG_VALUE $sp, 0, !9, !DIExpression(DW_OP_plus_uconst, 12)
 
   %invisible = add i32 %var, 1
   br label %return, !dbg !14
 
 return:                                           ; preds = %artificial-bb-2
 ; CHECK-LABEL: bb.3.return:
-; CHECK: DBG_VALUE debug-use $sp, 0, !9, !DIExpression(DW_OP_plus_uconst, 12)
+; CHECK: DBG_VALUE $sp, 0, !9, !DIExpression(DW_OP_plus_uconst, 12)
 
   call void @use(i32 %var)
   ret void, !dbg !15
 }
 
 ; Function Attrs: nounwind readnone speculatable
 declare void @llvm.dbg.value(metadata, metadata, metadata) #0
 

llvm/trunk/test/DebugInfo/ARM/sdag-split-arg1.ll

 ; RUN: llc -filetype=asm %s -o -  -stop-after=livedebugvalues | FileCheck %s
 ; This tests that transferring debug info describing the lower bits of
 ; an extended SDNode works.
 target triple = "thumbv6m-apple-unknown-macho"
 define arm_aapcscc i64 @f(double %a) !dbg !5 {
 entry:
   %0 = bitcast double %a to i64
   %extract.t84 = trunc i64 %0 to i32
   tail call void @llvm.dbg.value(metadata i32 %extract.t84, metadata !8, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), !dbg !12
-  ; CHECK: DBG_VALUE debug-use $r0, debug-use $noreg, !6, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
+  ; CHECK: DBG_VALUE $r0, $noreg, !6, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
   %r.sroa.0.0.insert.ext35 = zext i32 %extract.t84 to i64
   ret i64 %r.sroa.0.0.insert.ext35
 }
 
 declare void @llvm.dbg.value(metadata, metadata, metadata)
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!3}

llvm/trunk/test/DebugInfo/MIR/AArch64/clobber-sp.mir

 body:             |
   bb.0.entry:
     successors: %bb.2.if.end(0x40000000), %bb.1.if.then(0x40000000)
     liveins: $w0, $w1, $d0, $d1, $d2, $d3, $lr
 
     $sp = frame-setup SUBXri $sp, 32, 0
     frame-setup STPXi killed $fp, killed $lr, $sp, 2 :: (store 8 into %stack.3), (store 8 into %stack.2)
     $fp = frame-setup ADDXri $sp, 16, 0
-    DBG_VALUE debug-use $w0, debug-use _, !19, !22, debug-location !23
+    DBG_VALUE $w0, _, !19, !22, debug-location !23
     STURWi killed $w0, $fp, -4 :: (store 4 into %stack.0.x.addr)
-    DBG_VALUE debug-use $w1, debug-use _, !20, !22, debug-location !28
+    DBG_VALUE $w1, _, !20, !22, debug-location !28
     STRWui killed $w1, $sp, 2, debug-location !30 :: (store 4 into %stack.1)
-    DBG_VALUE debug-use $sp, 0, !20, !36, debug-location !28
+    DBG_VALUE $sp, 0, !20, !36, debug-location !28
     BL @g, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $d0, implicit killed $d1, implicit killed $d2, implicit killed $d3, implicit-def $sp, debug-location !30
     $w0 = LDRWui $sp, 2, debug-location !33 :: (load 4 from %stack.1)
     CBZW killed $w0, %bb.2.if.end, debug-location !33
 
   bb.1.if.then:
     successors: %bb.2.if.end(0x80000000)
 
-    DBG_VALUE debug-use $sp, 0, !20, !36, debug-location !28
+    DBG_VALUE $sp, 0, !20, !36, debug-location !28
     $x0 = SUBXri $fp, 4, 0
-    DBG_VALUE debug-use $x0, debug-use _, !19, !22, debug-location !23
+    DBG_VALUE $x0, _, !19, !22, debug-location !23
     BL @h, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $x0, debug-location !34
 
   bb.2.if.end:
-    DBG_VALUE debug-use $sp, 0, !20, !36, debug-location !28
+    DBG_VALUE $sp, 0, !20, !36, debug-location !28
     $w8 = MOVZWi 0, 0
     $x0 = ORRXrs $xzr, undef $x8, 0, implicit killed $w8, debug-location !35
     $fp, $lr = LDPXi $sp, 2, debug-location !35 :: (load 8 from %stack.3), (load 8 from %stack.2)
     $sp = ADDXri $sp, 32, 0, debug-location !35
     RET undef $lr, implicit killed $w0, debug-location !35
 
 ...

llvm/trunk/test/DebugInfo/MIR/ARM/live-debug-values-reg-copy.mir

 # RUN: llc -run-pass=livedebugvalues %s -o - | FileCheck %s
 #
 # This test tests tracking variables value transferring from one register to another.
 # This example is altered additionally in order to test transferring from one float register
 # to another. The altered instructions are labeled below.
 #
 # CHECK: ![[ARG1:.*]] = !DILocalVariable(name: "arg1"
-# CHECK: DBG_VALUE debug-use $r4, debug-use $noreg, ![[ARG1]], !DIExpression(), debug-location
+# CHECK: DBG_VALUE $r4, $noreg, ![[ARG1]], !DIExpression(), debug-location
 # CHECK: $r5 = MOVr killed $r4, 14, $noreg, $noreg, debug-location
-# CHECK-NEXT: DBG_VALUE debug-use $r5, debug-use $noreg, ![[ARG1]], !DIExpression(), debug-location
+# CHECK-NEXT: DBG_VALUE $r5, $noreg, ![[ARG1]], !DIExpression(), debug-location
 --- |
   ; ModuleID = 'live-debug-values-reg-copy.ll'
   source_filename = "live-debug-values-reg-copy.c"
   target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
   target triple = "armv4t--"
   
   define dso_local arm_aapcscc i32 @foo(i32 %arg1) local_unnamed_addr !dbg !8 {
   entry:
bb.0.entry:
     successors: %bb.1(0x40000000), %bb.2(0x40000000)
   
     $sp = frame-setup STMDB_UPD $sp, 14, $noreg, killed $r4, killed $r5, killed $r11, killed $lr
     frame-setup CFI_INSTRUCTION def_cfa_offset 16
     frame-setup CFI_INSTRUCTION offset $lr, -4
     frame-setup CFI_INSTRUCTION offset $r11, -8
     frame-setup CFI_INSTRUCTION offset $r5, -12
     frame-setup CFI_INSTRUCTION offset $r4, -16
-    DBG_VALUE debug-use $r0, debug-use $noreg, !13, !DIExpression(), debug-location !16
-    DBG_VALUE debug-use $r0, debug-use $noreg, !13, !DIExpression(), debug-location !16
+    DBG_VALUE $r0, $noreg, !13, !DIExpression(), debug-location !16
+    DBG_VALUE $r0, $noreg, !13, !DIExpression(), debug-location !16
     CMPri renamable $r0, 10, 14, $noreg, implicit-def $cpsr, debug-location !16
     Bcc %bb.2, 13, killed $cpsr, debug-location !16
   
   bb.1.if.end:
     BL @externFunc, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit-def $sp, implicit-def dead $r0, debug-location !16
     $r0 = MOVi 1, 14, $noreg, $noreg, debug-location !16
     $sp = LDMIA_UPD $sp, 14, $noreg, def $r4, def $r5, def $r11, def $lr, debug-location !16
     BX_RET 14, $noreg, implicit killed $r0, debug-location !16
   
   bb.2.if.else:
     renamable $r4 = ADDri killed renamable $r0, 10, 14, $noreg, $noreg, debug-location !16
-    DBG_VALUE debug-use $r4, debug-use $noreg, !13, !DIExpression(), debug-location !16
+    DBG_VALUE $r4, $noreg, !13, !DIExpression(), debug-location !16
     $r0 = MOVr $r4, 14, $noreg, $noreg, debug-location !16
     BL @externFunc2, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit-def $sp, implicit-def $r0, debug-location !16
     $r5 = MOVr killed $r0, 14, $noreg, $noreg, debug-location !16
     $r0 = MOVr $r4, 14, $noreg, $noreg, debug-location !16
     BL @externFunc, csr_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $r0, implicit-def $sp, implicit-def dead $r0, debug-location !16
     $r0 = MOVr killed $r5, 14, $noreg, $noreg, debug-location !16
     ; Instruction below is added in order to test moving variable's value from one register to another.
     $r5 = MOVr killed $r4, 14, $noreg, $noreg, debug-location !16
     $sp = LDMIA_UPD $sp, 14, $noreg, def $r4, def $r5, def $r11, def $lr, debug-location !16
     BX_RET 14, $noreg, implicit killed $r0, debug-location !16
 
 ...

llvm/trunk/test/DebugInfo/MIR/ARM/split-superreg-complex.mir

bb.0.entry:
     liveins: $lr
   
     early-clobber $sp = frame-setup t2STR_PRE killed undef $lr, $sp, -4, 14, _
     frame-setup CFI_INSTRUCTION def_cfa_offset 4
     frame-setup CFI_INSTRUCTION offset $lr, -4
     tBL 14, _, @v, csr_ios, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $r0, implicit-def $r1, implicit-def $r2, implicit-def $r3, debug-location !19
     $d1 = VMOVDRR killed $r2, killed $r3, 14, _, implicit-def $q0, debug-location !19
     $d0 = VMOVDRR killed $r0, killed $r1, 14, _, implicit killed $q0, implicit-def $q0, debug-location !19
-    DBG_VALUE debug-use $q0, debug-use _, !14, !20, debug-location !21
+    DBG_VALUE $q0, _, !14, !20, debug-location !21
     $s4 = VMOVS $s1, 14, _, implicit-def $d2, debug-location !24
     $d0 = VADDfd $d0, killed $d2, 14, _, implicit killed $q0, debug-location !24
     $r0 = VMOVRS $s0, 14, _, implicit killed $d0, debug-location !25
     $lr, $sp = t2LDR_POST $sp, 4, 14, _, debug-location !25
     tBX_RET 14, _, implicit $r0, debug-location !25
 
 ...

llvm/trunk/test/DebugInfo/MIR/ARM/split-superreg-piece.mir

bb.0.entry:
     liveins: $lr
 
     early-clobber $sp = frame-setup t2STR_PRE killed undef $lr, $sp, -4, 14, _
     frame-setup CFI_INSTRUCTION def_cfa_offset 4
     frame-setup CFI_INSTRUCTION offset $lr, -4
     tBL 14, _, @v, csr_ios, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $r0, implicit-def $r1, implicit-def $r2, implicit-def $r3, debug-location !19
     $d1 = VMOVDRR killed $r2, killed $r3, 14, _, implicit-def $q0, debug-location !19
     $d0 = VMOVDRR killed $r0, killed $r1, 14, _, implicit killed $q0, implicit-def $q0, debug-location !19
-    DBG_VALUE debug-use $q0, debug-use _, !14, !20, debug-location !21
+    DBG_VALUE $q0, _, !14, !20, debug-location !21
     $s4 = VMOVS $s1, 14, _, implicit-def $d2, debug-location !24
     $d0 = VADDfd $d0, killed $d2, 14, _, implicit killed $q0, debug-location !24
     $r0 = VMOVRS $s0, 14, _, implicit killed $d0, debug-location !25
     $lr, $sp = t2LDR_POST $sp, 4, 14, _, debug-location !25
     tBX_RET 14, _, implicit $r0, debug-location !25
 
 ...

llvm/trunk/test/DebugInfo/MIR/ARM/split-superreg.mir

bb.0.entry:
     liveins: $lr
 
     early-clobber $sp = frame-setup t2STR_PRE killed undef $lr, $sp, -4, 14, _
     frame-setup CFI_INSTRUCTION def_cfa_offset 4
     frame-setup CFI_INSTRUCTION offset $lr, -4
     tBL 14, _, @v, csr_ios, implicit-def dead $lr, implicit $sp, implicit-def $sp, implicit-def $r0, implicit-def $r1, implicit-def $r2, implicit-def $r3, debug-location !19
     $d1 = VMOVDRR killed $r2, killed $r3, 14, _, implicit-def $q0, debug-location !19
     $d0 = VMOVDRR killed $r0, killed $r1, 14, _, implicit killed $q0, implicit-def $q0, debug-location !19
-    DBG_VALUE debug-use $q0, debug-use _, !14, !20, debug-location !21
+    DBG_VALUE $q0, _, !14, !20, debug-location !21
     $s4 = VMOVS $s1, 14, _, implicit-def $d2, debug-location !24
     $d0 = VADDfd $d0, killed $d2, 14, _, implicit killed $q0, debug-location !24
     $r0 = VMOVRS $s0, 14, _, implicit killed $d0, debug-location !25
     $lr, $sp = t2LDR_POST $sp, 4, 14, _, debug-location !25
     tBX_RET 14, _, implicit $r0, debug-location !25
 
 ...

llvm/trunk/test/DebugInfo/MIR/Mips/last-inst-bundled.mir

 #}
 #
 # reproduce:
 # clang --target=mips-linux-gnu -g -O1 -S -emit-llvm last-instr-bundled
 # llc -stop-before=livedebugvalues < last-instr-bundled.ll > last-instr-bundled.mir
 #
 # Check that last bundled instruction of block gets recognized as end of basic block.
 # CHECK: bb.2.if.end
-# CHECK-NEXT: DBG_VALUE debug-use $s0, debug-use $noreg, !12, !DIExpression(), debug-location !17
+# CHECK-NEXT: DBG_VALUE $s0, $noreg, !12, !DIExpression(), debug-location !17
 
 --- |
   ; ModuleID = '<stdin>'
   source_filename = "last-inst-bundled.c"
   target datalayout = "E-m:m-p:32:32-i8:8:32-i16:16:32-i64:64-n32-S64"
   target triple = "mips--linux-gnu"
 
   define void @foo(i32 signext %argument) local_unnamed_addr !dbg !7 {
bb.0.entry:
     successors: %bb.2(0x30000000), %bb.1(0x50000000)
 
     $sp = ADDiu $sp, -32
     CFI_INSTRUCTION def_cfa_offset 32
     SW killed $ra, $sp, 28 :: (store 4 into %stack.1)
     SW killed $s0, $sp, 24 :: (store 4 into %stack.2)
     CFI_INSTRUCTION offset $ra_64, -4
     CFI_INSTRUCTION offset $s0_64, -8
-    DBG_VALUE debug-use $a0, debug-use $noreg, !12, !DIExpression(), debug-location !17
+    DBG_VALUE $a0, $noreg, !12, !DIExpression(), debug-location !17
     $s0 = OR $a0, $zero
-    DBG_VALUE debug-use $s0, debug-use $noreg, !12, !DIExpression(), debug-location !17
-    DBG_VALUE debug-use $sp, 0, !13, !DIExpression(DW_OP_plus_uconst, 20), debug-location !19
+    DBG_VALUE $s0, $noreg, !12, !DIExpression(), debug-location !17
+    DBG_VALUE $sp, 0, !13, !DIExpression(DW_OP_plus_uconst, 20), debug-location !19
     JAL @set_cond, csr_o32, implicit-def dead $ra, implicit $a0, implicit $a1, implicit-def $sp, debug-location !20 {
       renamable $a1 = LEA_ADDiu $sp, 20
     }
     renamable $at = LW $sp, 20, debug-location !21 :: (dereferenceable load 4 from %ir.condition, !tbaa !23)
-    DBG_VALUE debug-use $at, debug-use $noreg, !13, !DIExpression(), debug-location !19
+    DBG_VALUE $at, $noreg, !13, !DIExpression(), debug-location !19
     BEQ killed renamable $at, $zero, %bb.2, implicit-def $at, debug-location !27 {
       NOP debug-location !27
     }
 
   bb.1.if.then:
     successors: %bb.2(0x80000000)
 
     JAL @do_something, csr_o32, implicit-def dead $ra, implicit undef $a0, implicit $a1, implicit-def $sp, debug-location !28 {

llvm/trunk/test/DebugInfo/MIR/Mips/live-debug-values-reg-copy.mir

 # RUN: llc -run-pass=livedebugvalues %s -o - | FileCheck %s
 #
 # This test tests tracking variables value transferring from one register to another.
 # This example is altered additionally in order to test transferring from one float register
 # to another. The altered instructions are labeled below.
 #
 # CHECK: ![[ARG1:.*]] = !DILocalVariable(name: "arg1"
 # CHECK: ![[ARG2:.*]] = !DILocalVariable(name: "arg2"
-# CHECK: DBG_VALUE debug-use $s0_64, debug-use $noreg, ![[ARG2]], !DIExpression(), debug-location
+# CHECK: DBG_VALUE $s0_64, $noreg, ![[ARG2]], !DIExpression(), debug-location
 # CHECK: $s1_64 = OR64 killed $s0_64, $zero_64, debug-location
-# CHECK-NEXT: DBG_VALUE debug-use $s1_64, debug-use $noreg, ![[ARG2]], !DIExpression(), debug-location
-# CHECK: DBG_VALUE debug-use $f24, debug-use $noreg, ![[ARG1]], !DIExpression(), debug-location
+# CHECK-NEXT: DBG_VALUE $s1_64, $noreg, ![[ARG2]], !DIExpression(), debug-location
+# CHECK: DBG_VALUE $f24, $noreg, ![[ARG1]], !DIExpression(), debug-location
 # CHECK: $f26 = FMOV_S killed $f24, debug-location
-# CHECK-NEXT: DBG_VALUE debug-use $f26, debug-use $noreg, ![[ARG1]], !DIExpression(), debug-location
+# CHECK-NEXT: DBG_VALUE $f26, $noreg, ![[ARG1]], !DIExpression(), debug-location
 
 --- |
   ; ModuleID = 'live-debug-values-reg-copy.ll'
   source_filename = "live-debug-values-reg-copy.c"
   target datalayout = "E-m:e-i8:8:32-i16:16:32-i64:64-n32:64-S128"
   target triple = "mips64-octeon-linux"
 
   define float @foo(float %arg1, i32 signext %arg2) local_unnamed_addr !dbg !8 {
bb.0.entry:
     SD killed $ra_64, $sp_64, 8 :: (store 8 into %stack.2)
     SD killed $s0_64, $sp_64, 0 :: (store 8 into %stack.3)
     CFI_INSTRUCTION offset $d26_64, -8
     CFI_INSTRUCTION offset $d25_64, -4
     CFI_INSTRUCTION offset $d25_64, -16
     CFI_INSTRUCTION offset $d24_64, -12
     CFI_INSTRUCTION offset $ra_64, -24
     CFI_INSTRUCTION offset $s0_64, -32
-    DBG_VALUE debug-use $f12, debug-use $noreg, !14, !DIExpression(), debug-location !19
-    DBG_VALUE debug-use $a1_64, debug-use $noreg, !15, !DIExpression(), debug-location !19
-    DBG_VALUE debug-use $s0, debug-use $noreg, !15, !DIExpression(), debug-location !19
-    DBG_VALUE debug-use $s0_64, debug-use $noreg, !15, !DIExpression(), debug-location !19
-    DBG_VALUE debug-use $f12, debug-use $noreg, !14, !DIExpression(), debug-location !19
+    DBG_VALUE $f12, $noreg, !14, !DIExpression(), debug-location !19
+    DBG_VALUE $a1_64, $noreg, !15, !DIExpression(), debug-location !19
+    DBG_VALUE $s0, $noreg, !15, !DIExpression(), debug-location !19
+    DBG_VALUE $s0_64, $noreg, !15, !DIExpression(), debug-location !19
+    DBG_VALUE $f12, $noreg, !14, !DIExpression(), debug-location !19
     renamable $d0_64 = CVT_D64_S renamable $f12, debug-location !19
     renamable $at_64 = LUi64 target-flags(mips-highest) %const.0
     renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-higher) %const.0
     renamable $at_64 = DSLL killed renamable $at_64, 16
     renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-abs-hi) %const.0
     renamable $at_64 = DSLL killed renamable $at_64, 16
     renamable $d1_64 = LDC164 killed renamable $at_64, target-flags(mips-abs-lo) %const.0, debug-location !19 :: (load 8 from constant-pool)
     FCMP_D64 killed renamable $d0_64, killed renamable $d1_64, 7, implicit-def $fcc0, debug-location !19
bb.2.if.else:
 
     renamable $at_64 = LUi64 target-flags(mips-highest) %const.1
     renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-higher) %const.1
     renamable $at_64 = DSLL killed renamable $at_64, 16
     renamable $at_64 = DADDiu killed renamable $at_64, target-flags(mips-abs-hi) %const.1
     renamable $at_64 = DSLL killed renamable $at_64, 16
     renamable $f0 = LWC1 killed renamable $at_64, target-flags(mips-abs-lo) %const.1, debug-location !19 :: (load 4 from constant-pool)
     renamable $f24 = FADD_S killed renamable $f12, killed renamable $f0, debug-location !19
-    DBG_VALUE debug-use $f24, debug-use $noreg, !14, !DIExpression(), debug-location !19
+    DBG_VALUE $f24, $noreg, !14, !DIExpression(), debug-location !19
     JAL @externFunc2, csr_n64, implicit-def dead $ra, implicit $f12, implicit-def $sp, implicit-def $f0, debug-location !19 {
       $f12 = FMOV_S $f24, debug-location !19
     }
     $f25 = FMOV_S $f0, debug-location !19
     JAL @externFunc4, csr_n64, implicit-def dead $ra, implicit $a0_64, implicit-def $sp, implicit-def $v0, debug-location !19 {
       renamable $a0_64 = SLL64_32 renamable $s0, implicit killed $s0_64, debug-location !19
     }
     $s0 = OR $v0, $zero, debug-location !19

llvm/trunk/test/DebugInfo/MIR/X86/bit-piece-dh.mir

body:             |
   bb.0.entry:
     liveins: $edi, $rbp
   
     frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
     CFI_INSTRUCTION def_cfa_offset 16
     CFI_INSTRUCTION offset $rbp, -16
     $rbp = frame-setup MOV64rr $rsp
     CFI_INSTRUCTION def_cfa_register $rbp
-    DBG_VALUE debug-use $dh, debug-use _, !14, !15, debug-location !16
+    DBG_VALUE $dh, _, !14, !15, debug-location !16
     $edi = SHR32ri killed $edi, 8, implicit-def dead $eflags, debug-location !17
     $eax = MOVSX32rr8 $dil, implicit killed $edi, debug-location !20
     $rbp = POP64r implicit-def $rsp, implicit $rsp, debug-location !20
     RETQ $eax, debug-location !20
 
 ...

llvm/trunk/test/DebugInfo/MIR/X86/kill-after-spill.mir

 # RUN: llc -run-pass=livedebugvalues -o - %s | FileCheck %s
 #
 # This test is used to acknowledge situation when spill register is killed
 # in instruction after the spill occurs.
 # Generated MIR is changed in order to test case when instruction after
 # possible spill, say instruction B, kills register different than than
 # the one that is used in possible spill, say instruction A. In that case
 # the instruction A is not recognized as spill. Changed instructions are
 # commented in MIR below.
 #
 # ...
 # A - possible spill instruction with register R2
 # B - instruction that kills R3
 # ...
 #
 # CHECK: bb.1.if.end:
-# CHECK: DBG_VALUE debug-use $rbp, 0, !37, !DIExpression(DW_OP_constu, 44, DW_OP_minus), debug-location !58
-# CHECK-NOT: DBG_VALUE debug-use $rbp, 0, !36, !DIExpression(DW_OP_constu, 48, DW_OP_minus), debug-location !57
+# CHECK: DBG_VALUE $rbp, 0, !37, !DIExpression(DW_OP_constu, 44, DW_OP_minus), debug-location !58
+# CHECK-NOT: DBG_VALUE $rbp, 0, !36, !DIExpression(DW_OP_constu, 48, DW_OP_minus), debug-location !57
 
 --- |
   ; ModuleID = '<stdin>'
   source_filename = "<stdin>"
   target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
   target triple = "x86_64-unknown-linux-gnu"
 
   %struct.firstStruct = type { i32, i8, %struct.secondStruct* }
bb.0.entry:
     frame-setup PUSH64r killed $r12, implicit-def $rsp, implicit $rsp
     frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
     frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
     CFI_INSTRUCTION offset $rbx, -56
     CFI_INSTRUCTION offset $r12, -48
     CFI_INSTRUCTION offset $r13, -40
     CFI_INSTRUCTION offset $r14, -32
     CFI_INSTRUCTION offset $r15, -24
-    DBG_VALUE debug-use $edi, debug-use $noreg, !36, !DIExpression(), debug-location !57
-    DBG_VALUE debug-use $esi, debug-use $noreg, !37, !DIExpression(), debug-location !58
+    DBG_VALUE $edi, $noreg, !36, !DIExpression(), debug-location !57
+    DBG_VALUE $esi, $noreg, !37, !DIExpression(), debug-location !58
     $ebx = MOV32rr $esi
-    DBG_VALUE debug-use $ebx, debug-use $noreg, !37, !DIExpression(), debug-location !58
+    DBG_VALUE $ebx, $noreg, !37, !DIExpression(), debug-location !58
     $r15d = MOV32rr $edi
-    DBG_VALUE debug-use $r15d, debug-use $noreg, !36, !DIExpression(), debug-location !57
+    DBG_VALUE $r15d, $noreg, !36, !DIExpression(), debug-location !57
     renamable $r14 = MOV64ri -9223372036854775808
     $edi = MOV32rr $ebx
     CALL64pcrel32 @func1, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $rax
     $r13 = MOV64rr $rax
     renamable $ecx = XOR32rr undef $ecx, undef $ecx, implicit-def dead $eflags
     renamable $r13 = AND64rr killed renamable $r13, renamable $r14, implicit-def $eflags
     JE_1 %bb.9, implicit $eflags
 

llvm/trunk/test/DebugInfo/MIR/X86/live-debug-values-3preds.mir

 
 # CHECK: ![[X_VAR:[0-9]+]] = !DILocalVariable(name: "x", {{.*}})
 # CHECK: ![[Y_VAR:[0-9]+]] = !DILocalVariable(name: "y", {{.*}})
 # CHECK: ![[Z_VAR:[0-9]+]] = !DILocalVariable(name: "z", {{.*}})
 
 # DBG_VALUE for variables "x", "y" and "z" are extended into %bb.9 from its
 # predecessors %bb.0, %bb.2 and %bb.8.
 # CHECK:      bb.9.for.end:
-# CHECK-DAG:  DBG_VALUE debug-use $edi, debug-use $noreg, ![[X_VAR]], !DIExpression(), debug-location !{{[0-9]+}}
-# CHECK-DAG:  DBG_VALUE debug-use $esi, debug-use $noreg, ![[Y_VAR]], !DIExpression(), debug-location !{{[0-9]+}}
-# CHECK-DAG:  DBG_VALUE debug-use $edx, debug-use $noreg, ![[Z_VAR]], !DIExpression(), debug-location !{{[0-9]+}}
+# CHECK-DAG:  DBG_VALUE $edi, $noreg, ![[X_VAR]], !DIExpression(), debug-location !{{[0-9]+}}
+# CHECK-DAG:  DBG_VALUE $esi, $noreg, ![[Y_VAR]], !DIExpression(), debug-location !{{[0-9]+}}
+# CHECK-DAG:  DBG_VALUE $edx, $noreg, ![[Z_VAR]], !DIExpression(), debug-location !{{[0-9]+}}
 # CHECK:      RET
 
 --- |
   ; ModuleID = 'live-debug-values-3preds.ll'
   target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
   target triple = "x86_64-unknown-linux-gnu"
   
   ; Function Attrs: norecurse nounwind readnone uwtable
frameInfo:
   hasOpaqueSPAdjustment: false
   hasVAStart:      false
   hasMustTailInVarArgFunc: false
 body:             |
   bb.0.entry:
     successors: %bb.1.for.body.preheader(20), %bb.9.for.end(12)
     liveins: $ecx, $edi, $edx, $esi
   
-    DBG_VALUE debug-use $edi, debug-use _, !9, !17, debug-location !18
-    DBG_VALUE debug-use $esi, debug-use _, !10, !17, debug-location !19
-    DBG_VALUE debug-use $edx, debug-use _, !11, !17, debug-location !21
-    DBG_VALUE debug-use $ecx, debug-use _, !12, !17, debug-location !23
+    DBG_VALUE $edi, _, !9, !17, debug-location !18
+    DBG_VALUE $esi, _, !10, !17, debug-location !19
+    DBG_VALUE $edx, _, !11, !17, debug-location !21
+    DBG_VALUE $ecx, _, !12, !17, debug-location !23
     DBG_VALUE 0, 0, !13, !17, debug-location !25
     $r8d = MOV32rr $esi, debug-location !26
     $r8d = IMUL32rr killed $r8d, $edi, implicit-def dead $eflags, debug-location !26
     TEST32rr $r8d, $r8d, implicit-def $eflags, debug-location !31
     JLE_1 %bb.9.for.end, implicit $eflags
   
   bb.1.for.body.preheader:
     successors: %bb.3.for.body(0)
     liveins: $ecx, $edi, $edx, $esi, $r8d
   
-    DBG_VALUE debug-use $edi, debug-use _, !9, !17, debug-location !18
-    DBG_VALUE debug-use $esi, debug-use _, !10, !17, debug-location !19
-    DBG_VALUE debug-use $edx, debug-use _, !11, !17, debug-location !21
-    DBG_VALUE debug-use $ecx, debug-use _, !12, !17, debug-location !23
+    DBG_VALUE $edi, _, !9, !17, debug-location !18
+    DBG_VALUE $esi, _, !10, !17, debug-location !19
+    DBG_VALUE $edx, _, !11, !17, debug-location !21
+    DBG_VALUE $ecx, _, !12, !17, debug-location !23
     DBG_VALUE 0, 0, !13, !17, debug-location !25
     $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags
   
   bb.3.for.body (align 4):
     successors: %bb.4.if.then(4), %bb.5.if.end(124)
     liveins: $eax, $ecx, $edi, $edx, $esi, $r8d
   
-    DBG_VALUE debug-use $edi, debug-use _, !9, !17, debug-location !18
-    DBG_VALUE debug-use $esi, debug-use _, !10, !17, debug-location !19
-    DBG_VALUE debug-use $edx, debug-use _, !11, !17, debug-location !21
-    DBG_VALUE debug-use $ecx, debug-use _, !12, !17, debug-location !23
+    DBG_VALUE $edi, _, !9, !17, debug-location !18
+    DBG_VALUE $esi, _, !10, !17, debug-location !19
+    DBG_VALUE $edx, _, !11, !17, debug-location !21
+    DBG_VALUE $ecx, _, !12, !17, debug-location !23
     DBG_VALUE 0, 0, !13, !17, debug-location !25
     TEST32rr $edi, $edi, implicit-def $eflags, debug-location !35
     JG_1 %bb.4.if.then, implicit $eflags
   
   bb.5.if.end:
     successors: %bb.6.if.then.4(4), %bb.7.if.end.6(124)
     liveins: $eax, $ecx, $edi, $edx, $esi, $r8d
   
-    DBG_VALUE debug-use $edi, debug-use _, !9, !17, debug-location !18
-    DBG_VALUE debug-use $esi, debug-use _, !10, !17, debug-location !19
-    DBG_VALUE debug-use $edx, debug-use _, !11, !17, debug-location !21
-    DBG_VALUE debug-use $ecx, debug-use _, !12, !17, debug-location !23
+    DBG_VALUE $edi, _, !9, !17, debug-location !18
+    DBG_VALUE $esi, _, !10, !17, debug-location !19
+    DBG_VALUE $edx, _, !11, !17, debug-location !21
+    DBG_VALUE $ecx, _, !12, !17, debug-location !23
     DBG_VALUE 0, 0, !13, !17, debug-location !25
     TEST32rr $esi, $esi, implicit-def $eflags, debug-location !39
     JG_1 %bb.6.if.then.4, implicit $eflags
   
   bb.7.if.end.6:
     successors: %bb.8.if.then.8(4), %bb.2.for.cond(124)
     liveins: $eax, $ecx, $edi, $edx, $esi, $r8d
   
-    DBG_VALUE debug-use $edi, debug-use _, !9, !17, debug-location !18
-    DBG_VALUE debug-use $esi, debug-use _, !10, !17, debug-location !19
-    DBG_VALUE debug-use $edx, debug-use _, !11, !17, debug-location !21
-    DBG_VALUE debug-use $ecx, debug-use _, !12, !17, debug-location !23
+    DBG_VALUE $edi, _, !9, !17, debug-location !18
+    DBG_VALUE $esi, _, !10, !17, debug-location !19
+    DBG_VALUE $edx, _, !11, !17, debug-location !21
+    DBG_VALUE $ecx, _, !12, !17, debug-location !23
     DBG_VALUE 0, 0, !13, !17, debug-location !25
     TEST32rr $edx, $edx, implicit-def $eflags, debug-location !45
     JG_1 %bb.8.if.then.8, implicit $eflags
   
   bb.2.for.cond:
     successors: %bb.3.for.body(124), %bb.9.for.end(4)
     liveins: $eax, $ecx, $edi, $edx, $esi, $r8d
   
-    DBG_VALUE debug-use $edi, debug-use _, !9, !17, debug-location !18
-    DBG_VALUE debug-use $esi, debug-use _, !10, !17, debug-location !19
-    DBG_VALUE debug-use $edx, debug-use _, !11, !17, debug-location !21
-    DBG_VALUE debug-use $ecx, debug-use _, !12, !17, debug-location !23
+    DBG_VALUE $edi, _, !9, !17, debug-location !18
+    DBG_VALUE $esi, _, !10, !17, debug-location !19
+    DBG_VALUE $edx, _, !11, !17, debug-location !21
+    DBG_VALUE $ecx, _, !12, !17, debug-location !23
     DBG_VALUE 0, 0, !13, !17, debug-location !25
     $eax = INC32r killed $eax, implicit-def dead $eflags, debug-location !44
-    DBG_VALUE debug-use $eax, debug-use _, !13, !17, debug-location !25
+    DBG_VALUE $eax, _, !13, !17, debug-location !25
     CMP32rr $eax, $r8d, implicit-def $eflags, debug-location !31
     JL_1 %bb.3.for.body, implicit $eflags
     JMP_1 %bb.9.for.end
   
   bb.4.if.then:
     liveins: $ecx, $edi
   
-    DBG_VALUE debug-use $edi, debug-use _, !9, !17, debug-location !18
-    DBG_VALUE debug-use $ecx, debug-use _, !12, !17, debug-location !23
+    DBG_VALUE $edi, _, !9, !17, debug-location !18
+    DBG_VALUE $ecx, _, !12, !17, debug-location !23
     DBG_VALUE 0, 0, !13, !17, debug-location !25
     $ecx = IMUL32rr killed $ecx, killed $edi, implicit-def dead $eflags, debug-location !36
     DBG_VALUE 0, 0, !13, !17, debug-location !25
     $eax = MOV32rr killed $ecx, debug-location !50
     RETQ $eax, debug-location !50
   
   bb.6.if.then.4:
     liveins: $ecx, $esi
   
-    DBG_VALUE debug-use $esi, debug-use _, !10, !17, debug-location !19
-    DBG_VALUE debug-use $ecx, debug-use _, !12, !17, debug-location !23
+    DBG_VALUE $esi, _, !10, !17, debug-location !19
+    DBG_VALUE $ecx, _, !12, !17, debug-location !23
     DBG_VALUE 0, 0, !13, !17, debug-location !25
     $ecx = IMUL32rr killed $ecx, killed $esi, implicit-def dead $eflags, debug-location !40
     DBG_VALUE 0, 0, !13, !17, debug-location !25
     $eax = MOV32rr killed $ecx, debug-location !50
     RETQ $eax, debug-location !50
   
   bb.8.if.then.8:
     successors: %bb.9.for.end(0)
     liveins: $ecx, $edx
   
-    DBG_VALUE debug-use $edx, debug-use _, !11, !17, debug-location !21
-    DBG_VALUE debug-use $ecx, debug-use _, !12, !17, debug-location !23
+    DBG_VALUE $edx, _, !11, !17, debug-location !21
+    DBG_VALUE $ecx, _, !12, !17, debug-location !23
     DBG_VALUE 0, 0, !13, !17, debug-location !25
     $ecx = IMUL32rr killed $ecx, killed $edx, implicit-def dead $eflags, debug-location !46
   
   bb.9.for.end:
     liveins: $ecx
   
     DBG_VALUE 0, 0, !13, !17, debug-location !25
     $eax = MOV32rr killed $ecx, debug-location !50
     RETQ $eax, debug-location !50
 
 ...

llvm/trunk/test/DebugInfo/MIR/X86/live-debug-values-reg-copy.mir

 # RUN: llc -run-pass=livedebugvalues %s -o - | FileCheck %s
 #
 # This test tests tracking variables value transferring from one register to another.
 # This example is altered additionally in order to test transferring from one float register
 # to another. The altered instructions are labeled below.
 #
 # CHECK: ![[ARG1:.*]] = !DILocalVariable(name: "arg1"
-# CHECK: DBG_VALUE debug-use $ebx, debug-use $noreg, ![[ARG1]], !DIExpression(), debug-location
+# CHECK: DBG_VALUE $ebx, $noreg, ![[ARG1]], !DIExpression(), debug-location
 # CHECK: $r12d = MOV32rr killed $ebx, implicit-def $r12
-# CHECK-NEXT: DBG_VALUE debug-use $r12d, debug-use $noreg, ![[ARG1]], !DIExpression(), debug-location
+# CHECK-NEXT: DBG_VALUE $r12d, $noreg, ![[ARG1]], !DIExpression(), debug-location
 --- |
   ; ModuleID = 'live-debug-values-reg-copy.ll'
   source_filename = "live-debug-values-reg-copy.c"
   target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
   target triple = "x86_64-unknown-linux-gnu"
 
   define dso_local i32 @foo(i32 %arg1) local_unnamed_addr !dbg !7 {
   entry:
bb.0.entry:
     frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
     CFI_INSTRUCTION def_cfa_offset 16
     frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
     CFI_INSTRUCTION def_cfa_offset 24
     frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
     CFI_INSTRUCTION def_cfa_offset 32
     CFI_INSTRUCTION offset $rbx, -24
     CFI_INSTRUCTION offset $rbp, -16
-    DBG_VALUE debug-use $edi, debug-use $noreg, !12, !DIExpression(), debug-location !15
+    DBG_VALUE $edi, $noreg, !12, !DIExpression(), debug-location !15
     $ebx = MOV32rr $edi, implicit-def $rbx
-    DBG_VALUE debug-use $ebx, debug-use $noreg, !12, !DIExpression(), debug-location !15
+    DBG_VALUE $ebx, $noreg, !12, !DIExpression(), debug-location !15
     renamable $rdi = LEA64r $rsp, 1, $noreg, 4, $noreg
     CALL64pcrel32 @init, csr_64, implicit $rsp, implicit $ssp, implicit $rdi, implicit-def $rsp, implicit-def $ssp, debug-location !15
     renamable $edi = MOV32rm $rsp, 1, $noreg, 4, $noreg :: (dereferenceable load 4 from %ir.local1, !tbaa !20)
     renamable $edi = ADD32rr killed renamable $edi, renamable $ebx, implicit-def dead $eflags, debug-location !15
     CALL64pcrel32 @coeficient, csr_64, implicit $rsp, implicit $ssp, implicit $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !15
     $ebp = MOV32rr $eax, debug-location !15
     $edi = MOV32rr $ebx, debug-location !15
     CMP32ri8 renamable $ebp, 33, implicit-def $eflags, debug-location !15

llvm/trunk/test/DebugInfo/MIR/X86/live-debug-values-spill.mir

 #
 # Make sure that we generated DBG_VALUE instructions for the spills
 # GENERATE: ![[INT0:[0-9]+]] = !DILocalVariable(name: "int0",{{.*}})
 # GENERATE: ![[INTB:[0-9]+]] = !DILocalVariable(name: "intb",{{.*}})
 # GENERATE: ![[INTD:[0-9]+]] = !DILocalVariable(name: "intd",{{.*}})
 #
 # GENERATE:      bb.1.if.end:
 # GENERATE:      MOV32mr $rbp, 1, $noreg, -48, $noreg, killed $edx :: (store 4 into %stack.5)
-# GENERATE-NEXT: DBG_VALUE debug-use $rbp, 0, ![[INT0]], !DIExpression(DW_OP_constu, 48, DW_OP_minus)
+# GENERATE-NEXT: DBG_VALUE $rbp, 0, ![[INT0]], !DIExpression(DW_OP_constu, 48, DW_OP_minus)
 # GENERATE:      MOV32mr $rbp, 1, $noreg, -52, $noreg, killed $r8d :: (store 4 into %stack.4)
-# GENERATE-NEXT: DBG_VALUE debug-use $rbp, 0, ![[INTB]], !DIExpression(DW_OP_constu, 52, DW_OP_minus)
+# GENERATE-NEXT: DBG_VALUE $rbp, 0, ![[INTB]], !DIExpression(DW_OP_constu, 52, DW_OP_minus)
 # GENERATE:      MOV32mr $rbp, 1, $noreg, -56, $noreg, killed $esi :: (store 4 into %stack.3)
-# GENERATE-NEXT: DBG_VALUE debug-use $rbp, 0, ![[INTD]], !DIExpression(DW_OP_constu, 56, DW_OP_minus)
+# GENERATE-NEXT: DBG_VALUE $rbp, 0, ![[INTD]], !DIExpression(DW_OP_constu, 56, DW_OP_minus)
 #
 # Check that the spill locations that are valid at the end of bb.1.if.end are
 # propagated to subsequent BBs.
 #
 # GENERATE:      bb.2.if.then4:
 # GENERATE-NOT:  bb.3:
-# GENERATE-DAG:  DBG_VALUE debug-use $rbp, 0, ![[INTD]], !DIExpression(DW_OP_constu, 56, DW_OP_minus)
-# GENERATE-DAG:  DBG_VALUE debug-use $rbp, 0, ![[INTB]], !DIExpression(DW_OP_constu, 52, DW_OP_minus)
+# GENERATE-DAG:  DBG_VALUE $rbp, 0, ![[INTD]], !DIExpression(DW_OP_constu, 56, DW_OP_minus)
+# GENERATE-DAG:  DBG_VALUE $rbp, 0, ![[INTB]], !DIExpression(DW_OP_constu, 52, DW_OP_minus)
 #
 # GENERATE:      bb.3:
 # GENERATE-NOT:  bb.4.if.end13:
-# GENERATE-DAG:  DBG_VALUE debug-use $rbp, 0, ![[INTD]], !DIExpression(DW_OP_constu, 56, DW_OP_minus)
-# GENERATE-DAG:  DBG_VALUE debug-use $rbp, 0, ![[INTB]], !DIExpression(DW_OP_constu, 52, DW_OP_minus)
+# GENERATE-DAG:  DBG_VALUE $rbp, 0, ![[INTD]], !DIExpression(DW_OP_constu, 56, DW_OP_minus)
+# GENERATE-DAG:  DBG_VALUE $rbp, 0, ![[INTB]], !DIExpression(DW_OP_constu, 52, DW_OP_minus)
 #
 # GENERATE:      bb.4.if.end13:
 # GENERATE-NOT:  bb.5.cleanup:
-# GENERATE-DAG:  DBG_VALUE debug-use $rbp, 0, ![[INTD]], !DIExpression(DW_OP_constu, 56, DW_OP_minus)
-# GENERATE-DAG:  DBG_VALUE debug-use $rbp, 0, ![[INTB]], !DIExpression(DW_OP_constu, 52, DW_OP_minus)
+# GENERATE-DAG:  DBG_VALUE $rbp, 0, ![[INTD]], !DIExpression(DW_OP_constu, 56, DW_OP_minus)
+# GENERATE-DAG:  DBG_VALUE $rbp, 0, ![[INTB]], !DIExpression(DW_OP_constu, 52, DW_OP_minus)
 # 
 # Check that the spill location rbp-48 (the variable int0) is not propagated 
 # because int0 is redefined within the same basic block.
 #
 # TERMINATE:     bb.2.if.then4:
-# TERMINATE-NOT: DBG_VALUE debug-use $rbp, -48,
+# TERMINATE-NOT: DBG_VALUE $rbp, -48,
 --- |
   ; ModuleID = '<stdin>'
   source_filename = "spill1.c"
   target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
   target triple = "x86_64-unknown-linux-gnu"
   
   @glob0 = common local_unnamed_addr global i32 0, align 4, !dbg !0
   @glob1 = common local_unnamed_addr global i32 0, align 4, !dbg !6
bb.0.entry:
     frame-setup PUSH64r killed $r12, implicit-def $rsp, implicit $rsp
     frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
     $rsp = frame-setup SUB64ri8 $rsp, 24, implicit-def dead $eflags
     CFI_INSTRUCTION offset $rbx, -56
     CFI_INSTRUCTION offset $r12, -48
     CFI_INSTRUCTION offset $r13, -40
     CFI_INSTRUCTION offset $r14, -32
     CFI_INSTRUCTION offset $r15, -24
-    DBG_VALUE debug-use $edi, debug-use _, !24, !38, debug-location !39
-    DBG_VALUE debug-use $esi, debug-use _, !25, !38, debug-location !40
-    DBG_VALUE debug-use $edx, debug-use _, !26, !38, debug-location !41
-    DBG_VALUE debug-use $ecx, debug-use _, !27, !38, debug-location !42
-    DBG_VALUE debug-use $r8d, debug-use _, !28, !38, debug-location !43
-    DBG_VALUE debug-use $r9d, debug-use _, !29, !38, debug-location !44
+    DBG_VALUE $edi, _, !24, !38, debug-location !39
+    DBG_VALUE $esi, _, !25, !38, debug-location !40
+    DBG_VALUE $edx, _, !26, !38, debug-location !41
+    DBG_VALUE $ecx, _, !27, !38, debug-location !42
+    DBG_VALUE $r8d, _, !28, !38, debug-location !43
+    DBG_VALUE $r9d, _, !29, !38, debug-location !44
     $r14d = MOV32rr $r8d
-    DBG_VALUE debug-use $r14d, debug-use _, !28, !38, debug-location !43
+    DBG_VALUE $r14d, _, !28, !38, debug-location !43
     $r12d = MOV32rr $esi
-    DBG_VALUE debug-use $r12d, debug-use _, !25, !38, debug-location !40
+    DBG_VALUE $r12d, _, !25, !38, debug-location !40
     $eax = MOV32rr $edi
-    DBG_VALUE debug-use $eax, debug-use _, !24, !38, debug-location !39
+    DBG_VALUE $eax, _, !24, !38, debug-location !39
     $r13d = MOV32rm $rip, 1, _, @glob0, _, debug-location !46 :: (dereferenceable load 4 from @glob0, !tbaa !47)
-    DBG_VALUE debug-use $r13d, debug-use _, !31, !38, debug-location !51
+    DBG_VALUE $r13d, _, !31, !38, debug-location !51
     $r8d = MOV32rm $rip, 1, _, @glob1, _, debug-location !52 :: (dereferenceable load 4 from @glob1, !tbaa !47)
-    DBG_VALUE debug-use $r8d, debug-use _, !32, !38, debug-location !53
+    DBG_VALUE $r8d, _, !32, !38, debug-location !53
     $r15d = MOV32rm $rip, 1, _, @glob2, _, debug-location !54 :: (dereferenceable load 4 from @glob2, !tbaa !47)
-    DBG_VALUE debug-use $r15d, debug-use _, !33, !38, debug-location !55
+    DBG_VALUE $r15d, _, !33, !38, debug-location !55
     $esi = MOV32rm $rip, 1, _, @glob3, _, debug-location !56 :: (dereferenceable load 4 from @glob3, !tbaa !47)
-    DBG_VALUE debug-use $esi, debug-use _, !34, !38, debug-location !57
+    DBG_VALUE $esi, _, !34, !38, debug-location !57
     $ebx = MOV32rm $rip, 1, _, @glob4, _, debug-location !59 :: (dereferenceable load 4 from @glob4, !tbaa !47)
-    DBG_VALUE debug-use $ebx, debug-use _, !35, !38, debug-location !60
+    DBG_VALUE $ebx, _, !35, !38, debug-location !60
     MOV32mr $rbp, 1, _, -44, _, $ebx, debug-location !60 :: (store 4 into %ir.inte, !tbaa !47)
     $edi = MOV32rm $rip, 1, _, @glob5, _, debug-location !62 :: (dereferenceable load 4 from @glob5, !tbaa !47)
-    DBG_VALUE debug-use $edi, debug-use _, !36, !38, debug-location !63
+    DBG_VALUE $edi, _, !36, !38, debug-location !63
     MOV32mr $rbp, 1, _, -60, _, $edi, debug-location !63 :: (store 4 into %ir.intf, !tbaa !47)
     TEST32rr killed $eax, $eax, implicit-def $eflags, debug-location !67
     JNE_1 %bb.5.cleanup, implicit $eflags
   
   bb.1.if.end:
     successors: %bb.2(0x30000000), %bb.3.if.then4(0x50000000)
     liveins: $ebx, $ecx, $edi, $edx, $esi, $r8d, $r9d, $r12d, $r13d, $r14d, $r15d, $rbp
   
     MOV32mr $rbp, 1, _, -48, _, killed $edx :: (store 4 into %stack.5)
     MOV32mr $rbp, 1, _, -52, _, killed $r8d :: (store 4 into %stack.4)
     MOV32mr $rbp, 1, _, -56, _, killed $esi :: (store 4 into %stack.3)
-    DBG_VALUE debug-use _, debug-use _, !30, !38, debug-location !45
+    DBG_VALUE _, _, !30, !38, debug-location !45
     $r14d = ADD32rr killed $r14d, killed $ecx, implicit-def dead $eflags, debug-location !68
     $r14d = ADD32rr killed $r14d, killed $r9d, implicit-def dead $eflags, debug-location !69
     $r14d = IMUL32rm killed $r14d, $rbp, 1, _, 16, _, implicit-def dead $eflags, debug-location !70 :: (load 4 from %fixed-stack.6, align 16)
-    DBG_VALUE debug-use $r14d, debug-use _, !26, !38, debug-location !41
+    DBG_VALUE $r14d, _, !26, !38, debug-location !41
     CALL64pcrel32 @use, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, debug-location !72
     $edi = MOV32rr killed $ebx, debug-location !73
     CALL64pcrel32 @use, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, debug-location !73
     TEST32rr killed $r12d, $r12d, implicit-def $eflags, debug-location !74
     JE_1 %bb.2, implicit $eflags
   
   bb.3.if.then4:
     successors: %bb.4.if.end13(0x80000000)
     liveins: $r14d, $r15d, $rbp
   
     $rdi = LEA64r $rbp, 1, _, -44, _
-    DBG_VALUE debug-use $rbp, -44, !35, !38, debug-location !60
+    DBG_VALUE $rbp, -44, !35, !38, debug-location !60
     $rsi = LEA64r $rbp, 1, _, -60, _
-    DBG_VALUE debug-use $rbp, -60, !36, !38, debug-location !63
+    DBG_VALUE $rbp, -60, !36, !38, debug-location !63
     $rdx = LEA64r $rbp, 1, _, -64, _
-    DBG_VALUE debug-use $rbp, -64, !37, !38, debug-location !78
+    DBG_VALUE $rbp, -64, !37, !38, debug-location !78
     CALL64pcrel32 @set, csr_64, implicit $rsp, implicit $rdi, implicit $rsi, implicit $rdx, implicit-def $rsp, debug-location !79
     $eax = MOV32rm $rbp, 1, _, -44, _, debug-location !81 :: (dereferenceable load 4 from %ir.inte, !tbaa !47)
-    DBG_VALUE debug-use $eax, debug-use _, !35, !38, debug-location !60
+    DBG_VALUE $eax, _, !35, !38, debug-location !60
     $r15d = ADD32rm killed $r15d, $rbp, 1, _, -52, _, implicit-def dead $eflags, debug-location !82 :: (load 4 from %stack.4)
     $r15d = IMUL32rr killed $r15d, $eax, implicit-def dead $eflags, debug-location !82
     $r15d = ADD32rm killed $r15d, $rbp, 1, _, -56, _, implicit-def dead $eflags, debug-location !83 :: (load 4 from %stack.3)
     $r15d = IMUL32rr killed $r15d, killed $eax, implicit-def dead $eflags, debug-location !84
-    DBG_VALUE debug-use $r15d, debug-use _, !31, !38, debug-location !51
+    DBG_VALUE $r15d, _, !31, !38, debug-location !51
     $r13d = MOV32rr killed $r15d
-    DBG_VALUE debug-use $r13d, debug-use _, !31, !38, debug-location !51
+    DBG_VALUE $r13d, _, !31, !38, debug-location !51
     JMP_1 %bb.4.if.end13
   
   bb.2:
     successors: %bb.4.if.end13(0x80000000)
     liveins: $r13d, $r14d, $rbp
   
     $r14d = ADD32rm killed $r14d, $rbp, 1, _, -48, _, implicit-def dead $eflags, debug-location !71 :: (load 4 from %stack.5)
-    DBG_VALUE debug-use $r14d, debug-use _, !26, !38, debug-location !41
+    DBG_VALUE $r14d, _, !26, !38, debug-location !41
   
   bb.4.if.end13:
     successors: %bb.5.cleanup(0x80000000)
     liveins: $r13d, $r14d, $rbp
   
-    DBG_VALUE debug-use $r14d, debug-use _, !26, !38, debug-location !41
-    DBG_VALUE debug-use $r13d, debug-use _, !31, !38, debug-location !51
+    DBG_VALUE $r14d, _, !26, !38, debug-location !41
+    DBG_VALUE $r13d, _, !31, !38, debug-location !51
     $r13d = IMUL32rm killed $r13d, $rbp, 1, _, 16, _, implicit-def dead $eflags, debug-location !86 :: (load 4 from %fixed-stack.6, align 16)
     $r13d = ADD32rr killed $r13d, killed $r14d, implicit-def dead $eflags, debug-location !87
-    DBG_VALUE debug-use $r13d, debug-use _, !26, !38, debug-location !41
+    DBG_VALUE $r13d, _, !26, !38, debug-location !41
     $edi = MOV32rr killed $r13d, debug-location !88
     CALL64pcrel32 @use, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, debug-location !88
   
   bb.5.cleanup:
     liveins: $rbp
   
     $rsp = ADD64ri8 $rsp, 24, implicit-def dead $eflags, debug-location !90
     $rbx = POP64r implicit-def $rsp, implicit $rsp, debug-location !90
     $r12 = POP64r implicit-def $rsp, implicit $rsp, debug-location !90
     $r13 = POP64r implicit-def $rsp, implicit $rsp, debug-location !90
     $r14 = POP64r implicit-def $rsp, implicit $rsp, debug-location !90
     $r15 = POP64r implicit-def $rsp, implicit $rsp, debug-location !90
     $rbp = POP64r implicit-def $rsp, implicit $rsp, debug-location !90
     RETQ debug-location !90
 
 ...

llvm/trunk/test/DebugInfo/MIR/X86/live-debug-values.mir

 # llvm/test/DebugInfo/live-debug-values.ll and present here for testing under
 # MIR->MIR serialization.
 
 # DBG_VALUE for variable "n" is extended into %bb.5 from its predecessors %bb.3
 # and %bb.4.
 # CHECK: ![[N_VAR:[0-9]+]] = !DILocalVariable(name: "n",{{.*}})
 #
 # CHECK:      bb.5.if.end.7:
-# CHECK:        DBG_VALUE debug-use $ebx, debug-use $noreg, ![[N_VAR]], !DIExpression(), debug-location !{{[0-9]+}}
+# CHECK:        DBG_VALUE $ebx, $noreg, ![[N_VAR]], !DIExpression(), debug-location !{{[0-9]+}}
 
 
 --- |
   ; ModuleID = 'live-debug-values.ll'
   target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
   target triple = "x86_64-unknown-linux-gnu"
   
   @m = common global i32 0, align 4, !dbg !16

 body:             |
   bb.0.entry:
     successors: %bb.1.if.else(16), %bb.2.if.end(16)
     liveins: $edi, $rsi, $rbx
   
     frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
     CFI_INSTRUCTION def_cfa_offset 16
     CFI_INSTRUCTION offset $rbx, -16
-    DBG_VALUE debug-use $edi, debug-use _, !12, !20, debug-location !21
-    DBG_VALUE debug-use $rsi, debug-use _, !13, !20, debug-location !22
+    DBG_VALUE $edi, _, !12, !20, debug-location !21
+    DBG_VALUE $rsi, _, !13, !20, debug-location !22
     $eax = MOV32rr $edi
-    DBG_VALUE debug-use $eax, debug-use _, !12, !20, debug-location !21
+    DBG_VALUE $eax, _, !12, !20, debug-location !21
     $edi = MOV32ri 2
     CMP32ri8 killed $eax, 2, implicit-def $eflags, debug-location !26
     JNE_1 %bb.2.if.end, implicit $eflags
   
   bb.1.if.else:
     successors: %bb.2.if.end(0)
     liveins: $rsi
   
-    DBG_VALUE debug-use $rsi, debug-use _, !13, !20, debug-location !22
+    DBG_VALUE $rsi, _, !13, !20, debug-location !22
     $rdi = MOV64rm killed $rsi, 1, _, 8, _, debug-location !27 :: (load 8 from %ir.arrayidx, !tbaa !28)
     dead $eax = XOR32rr undef $eax, undef $eax, implicit-def dead $eflags, implicit-def $al, debug-location !32
     CALL64pcrel32 @atoi, csr_64, implicit $rsp, implicit $rdi, implicit $al, implicit-def $rsp, implicit-def $eax, debug-location !32
     $edi = MOV32rr $eax, debug-location !32
-    DBG_VALUE debug-use $edi, debug-use _, !14, !20, debug-location !33
+    DBG_VALUE $edi, _, !14, !20, debug-location !33
   
   bb.2.if.end:
     successors: %bb.3.if.then.3(16), %bb.4.if.else.5(16)
     liveins: $edi
   
     CALL64pcrel32 @change, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, implicit-def $eax, debug-location !34
     $ebx = MOV32rr $eax, debug-location !34
-    DBG_VALUE debug-use $ebx, debug-use _, !14, !20, debug-location !33
+    DBG_VALUE $ebx, _, !14, !20, debug-location !33
     CMP32ri8 $ebx, 11, implicit-def $eflags, debug-location !37
     JL_1 %bb.4.if.else.5, implicit killed $eflags, debug-location !37
   
   bb.3.if.then.3:
     successors: %bb.5.if.end.7(0)
     liveins: $ebx
   
-    DBG_VALUE debug-use $ebx, debug-use _, !14, !20, debug-location !33
+    DBG_VALUE $ebx, _, !14, !20, debug-location !33
     $edi = MOV32rr $ebx, debug-location !38
     CALL64pcrel32 @modify, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, implicit-def $eax, debug-location !38
     $ecx = MOV32rr $eax, debug-location !38
     $ecx = ADD32rr killed $ecx, killed $ebx, implicit-def dead $eflags, debug-location !40
     JMP_1 %bb.5.if.end.7
   
   bb.4.if.else.5:
     successors: %bb.5.if.end.7(0)
     liveins: $ebx
   
-    DBG_VALUE debug-use $ebx, debug-use _, !14, !20, debug-location !33
+    DBG_VALUE $ebx, _, !14, !20, debug-location !33
     $edi = MOV32rr killed $ebx, debug-location !42
     CALL64pcrel32 @inc, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, implicit-def $eax, debug-location !42
     $ecx = MOV32rr $eax, debug-location !42
   
   bb.5.if.end.7:
     liveins: $ecx
   
     MOV32mr $rip, 1, _, @m, _, $ecx, debug-location !43 :: (store 4 into @m, !tbaa !44)

llvm/trunk/test/DebugInfo/MIR/X86/live-debug-vars-unused-arg-debugonly.mir

frameInfo:
   hasMustTailInVarArgFunc: false
   savePoint:       ''
   restorePoint:    ''
 fixedStack:
 stack:
 constants:
 body:             |
   bb.0.entry:
-    DBG_VALUE debug-use $edi, debug-use _, !21, !DIExpression(), debug-location !25
-    DBG_VALUE debug-use $rsi, debug-use _, !22, !DIExpression(), debug-location !26
+    DBG_VALUE $edi, _, !21, !DIExpression(), debug-location !25
+    DBG_VALUE $rsi, _, !22, !DIExpression(), debug-location !26
     %2 = MOV32rm $rip, 1, _, @bar, _, debug-location !27 :: (dereferenceable load 4 from `i32* getelementptr inbounds ([2 x i32], [2 x i32]* @bar, i64 0, i64 0)`, !tbaa !28)
-    DBG_VALUE debug-use %2, debug-use _, !23, !DIExpression(), debug-location !32
+    DBG_VALUE %2, _, !23, !DIExpression(), debug-location !32
     %3 = MOV32rm $rip, 1, _, @bar + 4, _, debug-location !33 :: (dereferenceable load 4 from `i32* getelementptr inbounds ([2 x i32], [2 x i32]* @bar, i64 0, i64 1)`, !tbaa !28)
-    DBG_VALUE debug-use %3, debug-use _, !24, !DIExpression(), debug-location !34
+    DBG_VALUE %3, _, !24, !DIExpression(), debug-location !34
     ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !35
     $edi = COPY %2, debug-location !35
     $esi = COPY %3, debug-location !35
     CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit killed $esi, implicit-def $rsp, debug-location !35
     ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !35
     $eax = MOV32r0 implicit-def dead $eflags, debug-location !36
     RET 0, killed $eax, debug-location !36
 
 ...
 
 # Let's verify that the slot index ranges for the unused variables argc/argv,
 # connected to physical regs $edi and $rsi, does not overlap with the ranges
 # for %2 and %3. The register allocator is actually allocating the
 # virtual registers # to $edi and $esi, so the ranges for argc/argv should
 # not cover the whole BB.
 #
 # CHECKDBG-LABEL: ********** EMITTING LIVE DEBUG VARIABLES **********
-# CHECKDBG-NEXT: !"argc,5"        [0B;0e):0 Loc0=debug-use $edi
+# CHECKDBG-NEXT: !"argc,5"        [0B;0e):0 Loc0=$edi
 # CHECKDBG-NEXT:         [0B;0e):0 %bb.0-160B
-# CHECKDBG-NEXT: !"argv,5"        [0B;0e):0 Loc0=debug-use $rsi
+# CHECKDBG-NEXT: !"argv,5"        [0B;0e):0 Loc0=$rsi
 # CHECKDBG-NEXT:         [0B;0e):0 %bb.0-160B
-# CHECKDBG-NEXT: !"a0,7"  [16r;64r):0 Loc0=debug-use %2
+# CHECKDBG-NEXT: !"a0,7"  [16r;64r):0 Loc0=%2
 # CHECKDBG-NEXT:         [16r;64r):0 %bb.0-160B
-# CHECKDBG-NEXT: !"a1,8"  [32r;80r):0 Loc0=debug-use %3
+# CHECKDBG-NEXT: !"a1,8"  [32r;80r):0 Loc0=%3
 # CHECKDBG-NEXT:         [32r;80r):0 %bb.0-160B

llvm/trunk/test/DebugInfo/MIR/X86/live-debug-vars-unused-arg.mir

frameInfo:
   hasMustTailInVarArgFunc: false
   savePoint:       ''
   restorePoint:    ''
 fixedStack:
 stack:
 constants:
 body:             |
   bb.0.entry:
-    DBG_VALUE debug-use $edi, debug-use _, !21, !DIExpression(), debug-location !25
-    DBG_VALUE debug-use $rsi, debug-use _, !22, !DIExpression(), debug-location !26
+    DBG_VALUE $edi, _, !21, !DIExpression(), debug-location !25
+    DBG_VALUE $rsi, _, !22, !DIExpression(), debug-location !26
     %2 = MOV32rm $rip, 1, _, @bar, _, debug-location !27 :: (dereferenceable load 4 from `i32* getelementptr inbounds ([2 x i32], [2 x i32]* @bar, i64 0, i64 0)`, !tbaa !28)
-    DBG_VALUE debug-use %2, debug-use _, !23, !DIExpression(), debug-location !32
+    DBG_VALUE %2, _, !23, !DIExpression(), debug-location !32
     %3 = MOV32rm $rip, 1, _, @bar + 4, _, debug-location !33 :: (dereferenceable load 4 from `i32* getelementptr inbounds ([2 x i32], [2 x i32]* @bar, i64 0, i64 1)`, !tbaa !28)
-    DBG_VALUE debug-use %3, debug-use _, !24, !DIExpression(), debug-location !34
+    DBG_VALUE %3, _, !24, !DIExpression(), debug-location !34
     ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !35
     $edi = COPY %2, debug-location !35
     $esi = COPY %3, debug-location !35
     CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit killed $esi, implicit-def $rsp, debug-location !35
     ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !35
     $eax = MOV32r0 implicit-def dead $eflags, debug-location !36
     RET 0, killed $eax, debug-location !36
 
 ...
 
 # Verify that we only get one DBG_VALUE for argc and one for argv.
 #
 # CHECKMIR: ![[ARGC:[0-9]+]] = !DILocalVariable(name: "argc", arg: 1
 # CHECKMIR: ![[ARGV:[0-9]+]] = !DILocalVariable(name: "argv", arg: 2
 # CHECKMIR: name:            main
 # CHECKMIR: body:
-# CHECKMIR: DBG_VALUE debug-use $edi, debug-use $noreg, ![[ARGC]]
-# CHECKMIR-NOT: DBG_VALUE debug-use %{{.*}}, debug-use $noreg, ![[ARGC]]
-# CHECKMIR: DBG_VALUE debug-use $rsi, debug-use $noreg, ![[ARGV]]
-# CHECKMIR-NOT: DBG_VALUE debug-use %{{.*}}, debug-use $noreg, ![[ARGC]]
-# CHECKMIR-NOT: DBG_VALUE debug-use %{{.*}}, debug-use $noreg, ![[ARGV]]
+# CHECKMIR: DBG_VALUE $edi, $noreg, ![[ARGC]]
+# CHECKMIR-NOT: DBG_VALUE %{{.*}}, $noreg, ![[ARGC]]
+# CHECKMIR: DBG_VALUE $rsi, $noreg, ![[ARGV]]
+# CHECKMIR-NOT: DBG_VALUE %{{.*}}, $noreg, ![[ARGC]]
+# CHECKMIR-NOT: DBG_VALUE %{{.*}}, $noreg, ![[ARGV]]
 

llvm/trunk/test/DebugInfo/MIR/X86/livedebugvalues-limit.mir

--- |
   ; CHECK: ![[INLCS1:[0-9]+]] = !DILocation(line: 3, column: 41, scope: ![[F_SP]], inlinedAt: ![[CS1:[0-9]+]])
   ; CHECK: ![[CS1]] = distinct !DILocation(line: 5, column: 3, scope: !{{[0-9]+}})
   ; CHECK: ![[INLCS2:[0-9]+]] = !DILocation(line: 3, column: 41, scope: ![[F_SP]], inlinedAt: ![[CS2:[0-9]+]])
   ; CHECK: ![[CS2]] = distinct !DILocation(line: 7, column: 5, scope: !{{[0-9]+}})
   ; CHECK: ![[INLCS3:[0-9]+]] = !DILocation(line: 3, column: 41, scope: ![[F_SP]], inlinedAt: ![[CS3:[0-9]+]])
   ; CHECK: ![[CS3]] = distinct !DILocation(line: 8, column: 3, scope: !{{[0-9]+}})
   ;
   ; CHECK:  bb.1.if.then:
-  ; CHECK:      DBG_VALUE debug-use $ebx, debug-use $noreg, ![[I_VAR]], !DIExpression(), debug-location ![[I_LOC]]
-  ; CHECK-NOT:  DBG_VALUE debug-use $ebx, debug-use $noreg, ![[A_VAR]], !DIExpression(), debug-location
-  ; CHECK:      DBG_VALUE debug-use $ebx, debug-use $noreg, ![[A_VAR]], !DIExpression(), debug-location ![[INLCS2]]
+  ; CHECK:      DBG_VALUE $ebx, $noreg, ![[I_VAR]], !DIExpression(), debug-location ![[I_LOC]]
+  ; CHECK-NOT:  DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location
+  ; CHECK:      DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location ![[INLCS2]]
   ; CHECK: bb.2.if.end:
-  ; CHECK:     DBG_VALUE debug-use $ebx, debug-use $noreg, ![[I_VAR]], !DIExpression(), debug-location ![[I_LOC]]
-  ; CHECK-NOT: DBG_VALUE debug-use $ebx, debug-use $noreg, ![[A_VAR]], !DIExpression(), debug-location
-  ; CHECK:     DBG_VALUE debug-use $ebx, debug-use $noreg, ![[A_VAR]], !DIExpression(), debug-location ![[INLCS3]]
+  ; CHECK:     DBG_VALUE $ebx, $noreg, ![[I_VAR]], !DIExpression(), debug-location ![[I_LOC]]
+  ; CHECK-NOT: DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location
+  ; CHECK:     DBG_VALUE $ebx, $noreg, ![[A_VAR]], !DIExpression(), debug-location ![[INLCS3]]
   ;
   ; ModuleID = 'livedebugvalues-limit.ll'
   source_filename = "livedebugvalues-limit.c"
   target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
   target triple = "x86_64-apple-macosx"
   
   ; Function Attrs: alwaysinline nounwind ssp uwtable
   define void @f(i32 %a) local_unnamed_addr #0 !dbg !7 {
body:             |
   bb.0.entry:
     liveins: $edi, $rbp
   
     frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
     CFI_INSTRUCTION def_cfa_offset 16
     CFI_INSTRUCTION offset $rbp, -16
     $rbp = frame-setup MOV64rr $rsp
     CFI_INSTRUCTION def_cfa_register $rbp
-    DBG_VALUE debug-use $edi, debug-use _, !12, !13, debug-location !14
+    DBG_VALUE $edi, _, !12, !13, debug-location !14
     $rbp = POP64r implicit-def $rsp, implicit $rsp, debug-location !15
     TAILJMPd64 @sink, csr_64, implicit $rsp, implicit $rsp, implicit $edi, debug-location !15
 
 ...
 ---
 name:            foo
 alignment:       4
 exposesReturnsTwice: false
bb.0.entry:
     frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
     CFI_INSTRUCTION def_cfa_offset 16
     CFI_INSTRUCTION offset $rbp, -16
     $rbp = frame-setup MOV64rr $rsp
     CFI_INSTRUCTION def_cfa_register $rbp
     frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
     frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp
     CFI_INSTRUCTION offset $rbx, -24
-    DBG_VALUE debug-use $edi, debug-use _, !19, !13, debug-location !20
+    DBG_VALUE $edi, _, !19, !13, debug-location !20
     $ebx = MOV32rr $edi
-    DBG_VALUE debug-use $ebx, debug-use _, !12, !13, debug-location !21
-    DBG_VALUE debug-use $ebx, debug-use _, !19, !13, debug-location !20
+    DBG_VALUE $ebx, _, !12, !13, debug-location !21
+    DBG_VALUE $ebx, _, !19, !13, debug-location !20
     CALL64pcrel32 @sink, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, debug-location !23
     TEST32rr $ebx, $ebx, implicit-def $eflags, debug-location !24
     JE_1 %bb.2.if.end, implicit $eflags
   
   bb.1.if.then:
     successors: %bb.2.if.end
     liveins: $ebx, $rbp
   
-    DBG_VALUE debug-use $ebx, debug-use _, !19, !13, debug-location !20
-    DBG_VALUE debug-use $ebx, debug-use _, !12, !13, debug-location !27
+    DBG_VALUE $ebx, _, !19, !13, debug-location !20
+    DBG_VALUE $ebx, _, !12, !13, debug-location !27
     $edi = MOV32rr $ebx, debug-location !29
     CALL64pcrel32 @sink, csr_64, implicit $rsp, implicit $edi, implicit-def $rsp, debug-location !29
   
   bb.2.if.end:
     liveins: $ebx, $rbp
   
-    DBG_VALUE debug-use $ebx, debug-use _, !19, !13, debug-location !20
+    DBG_VALUE $ebx, _, !19, !13, debug-location !20
     $edi = MOV32rr killed $ebx, debug-location !33
     $rsp = ADD64ri8 $rsp, 8, implicit-def dead $eflags, debug-location !33
-    DBG_VALUE debug-use $ebx, debug-use _, !12, !13, debug-location !31
+    DBG_VALUE $ebx, _, !12, !13, debug-location !31
     $rbx = POP64r implicit-def $rsp, implicit $rsp, debug-location !33
     $rbp = POP64r implicit-def $rsp, implicit $rsp, debug-location !33
     TAILJMPd64 @sink, csr_64, implicit $rsp, implicit $rsp, implicit $edi, debug-location !33
 
 ...

llvm/trunk/test/DebugInfo/MIR/X86/mlicm-hoist.mir

frameInfo:
   hasOpaqueSPAdjustment: false
   hasVAStart:      false
   hasMustTailInVarArgFunc: false
 body:             |
   bb.0.entry:
     successors: %bb.1.while.body(0x80000000)
     liveins: $rdi
 
-    DBG_VALUE debug-use $rdi, debug-use _, !16, !17, debug-location !18
+    DBG_VALUE $rdi, _, !16, !17, debug-location !18
     %2 = COPY $rdi
-    DBG_VALUE debug-use %2, debug-use _, !16, !17, debug-location !18
+    DBG_VALUE %2, _, !16, !17, debug-location !18
 
   bb.1.while.body:
     successors: %bb.1.while.body(0x80000000)
 
     %0 = PHI %2, %bb.0.entry, %1, %bb.1.while.body
-    DBG_VALUE debug-use %0, debug-use _, !16, !17, debug-location !18
+    DBG_VALUE %0, _, !16, !17, debug-location !18
     %1 = ADD64ri8 %0, 4, implicit-def dead $eflags, debug-location !20
-    DBG_VALUE debug-use %1, debug-use _, !16, !17, debug-location !18
+    DBG_VALUE %1, _, !16, !17, debug-location !18
     %3 = MOV32rm %0, 1, _, 0, _, debug-location !21 :: (load 4 from %ir.p.addr.0, !tbaa !22)
     %4 = MOV64rm $rip, 1, _, target-flags(x86-gotpcrel) @x, _, debug-location !26 :: (load 8 from got)
     MOV32mr killed %4, 1, _, 0, _, killed %3, debug-location !26 :: (store 4 into @x, !tbaa !22)
     JMP_1 %bb.1.while.body, debug-location !27
 
 ...

llvm/trunk/test/DebugInfo/MIR/X86/regcoalescer.mir

 ---
 name:            main
 alignment:       4
 registers:
   - { id: 0, class: gr32, preferred-register: '' }
 body:             |
   bb.0.entry:
     %0 = MOV32r0 implicit-def dead $eflags, debug-location !19
-    DBG_VALUE debug-use %0, debug-use _, !18, !DIExpression(), debug-location !20
+    DBG_VALUE %0, _, !18, !DIExpression(), debug-location !20
     $eax = COPY killed %0, debug-location !21
     RET 0, killed $eax, debug-location !21
 
 ...
 
 # CHECK: $eax = MOV32r0
-# CHECK-NEXT: DBG_VALUE debug-use $eax
+# CHECK-NEXT: DBG_VALUE $eax

llvm/trunk/test/DebugInfo/MSP430/sdagsplit-1.ll

 ; RUN: llc %s -stop-after=livedebugvars -o %t
 ; RUN: cat %t | FileCheck %s
 ;
 ; Test that we can emit debug info for large values that are split
 ; up across multiple registers by the SelectionDAG type legalizer.
 ;
 ;    // Compile with -O1 -m32.
 ;    long long foo (long long a, long long b)
 ;    {
 ;      long long res = b+1;
 ;      if ( a == b )
 ;        return res;
 ;      return 0;
 ;    }
 ;
-; CHECK-DAG: DBG_VALUE debug-use $r{{[0-9]+}}, debug-use $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 32, 16), debug-location !{{[0-9]+}}
-; CHECK-DAG: DBG_VALUE debug-use $r{{[0-9]+}}, debug-use $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 48, 16), debug-location !{{[0-9]+}}
-; CHECK-DAG: DBG_VALUE debug-use $r{{[0-9]+}}, debug-use $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 0, 16), debug-location !{{[0-9]+}}
-; CHECK-DAG: DBG_VALUE debug-use $r{{[0-9]+}}, debug-use $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 16, 16), debug-location !{{[0-9]+}}
+; CHECK-DAG: DBG_VALUE $r{{[0-9]+}}, $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 32, 16), debug-location !{{[0-9]+}}
+; CHECK-DAG: DBG_VALUE $r{{[0-9]+}}, $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 48, 16), debug-location !{{[0-9]+}}
+; CHECK-DAG: DBG_VALUE $r{{[0-9]+}}, $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 0, 16), debug-location !{{[0-9]+}}
+; CHECK-DAG: DBG_VALUE $r{{[0-9]+}}, $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 16, 16), debug-location !{{[0-9]+}}
 
 ; ModuleID = 'sdagsplit-1.c'
 target datalayout = "e-m:e-p:16:16-i32:16-i64:16-f32:16-f64:16-a:8-n8:16-S16"
 target triple = "msp430"
 
 ; Function Attrs: nounwind readnone
 define i64 @foo(i64 %a, i64 %b) local_unnamed_addr #0 !dbg !7 {
 entry:

llvm/trunk/test/DebugInfo/WebAssembly/dbg-value-live-interval.ll

 ; RUN: llc < %s -print-machineinstrs 2>&1 | FileCheck %s
 
 ; CHECK: After WebAssembly Optimize Live Intervals:
 ; CHECK: bb.3.for.body.for.body_crit_edge:
 ; CHECK: [[REG:%[0-9]+]]:i32 = nsw ADD_I32 {{.*}} fib.c:7:7
-; CHECK: DBG_VALUE debug-use [[REG]]:i32, debug-use $noreg, !"a", {{.*}} fib.c:5:13
+; CHECK: DBG_VALUE [[REG]]:i32, $noreg, !"a", {{.*}} fib.c:5:13
 ; CHECK: After WebAssembly Store Results:
 
 ; ModuleID = 'fib.bc'
 source_filename = "fib.c"
 ; void swap(int* a, int* b);
 ; 
 ; __attribute__ ((visibility ("default")))
 ; int fib(int n) {

llvm/trunk/test/DebugInfo/WebAssembly/dbg-value-move-2.ll

 ; RUN: llc < %s -print-machineinstrs 2>&1 | FileCheck %s
 
 ; CHECK: After WebAssembly Register Stackify:
 ; CHECK: bb.2.for.body:
 ; CHECK: [[REG:%[0-9]+]]:i32 = TEE_I32 {{.*}} fib2.c:6:7
-; CHECK-NEXT: DBG_VALUE debug-use [[REG]]:i32, debug-use $noreg, !"a", {{.*}} fib2.c:2:13
+; CHECK-NEXT: DBG_VALUE [[REG]]:i32, $noreg, !"a", {{.*}} fib2.c:2:13
 ; CHECK: After WebAssembly Register Coloring:
 
 ; ModuleID = 'fib2.bc'
 ; The test generated via: clang --target=wasm32-unknown-unknown-wasm fib2.c -g -O2
 ; All non-"!dbg !18" llvm.dbg.value calls and attributes were removed.
 source_filename = "fib2.c"
 ; int fib(int n) {
 ;   int i, t, a = 0, b = 1;

llvm/trunk/test/DebugInfo/WebAssembly/dbg-value-move.ll

 ; RUN: llc < %s -print-machineinstrs 2>&1 | FileCheck %s
 
 ; CHECK: After WebAssembly Register Stackify:
 ; CHECK: bb.3.for.body.for.body_crit_edge:
 ; CHECK: [[REG:%[0-9]+]]:i32 = nsw ADD_I32 {{.*}} fib.c:7:7
-; CHECK-NEXT: DBG_VALUE debug-use [[REG]]:i32, debug-use $noreg, !"a", {{.*}} fib.c:5:13
+; CHECK-NEXT: DBG_VALUE [[REG]]:i32, $noreg, !"a", {{.*}} fib.c:5:13
 ; CHECK: After WebAssembly Register Coloring:
 
 ; ModuleID = 'fib.bc'
 ; The test generated via: clang --target=wasm32-unknown-unknown-wasm fib.c -g -O2
 ; All lifetime markers and attributes were removed.
 source_filename = "fib.c"
 ; void swap(int* a, int* b);
 ; 

llvm/trunk/test/DebugInfo/X86/bbjoin.ll

 ; RUN: llc -mtriple=x86_64-apple-macosx10.9.0 %s -stop-after=livedebugvars \
 ; RUN:   -o - | FileCheck %s
 ; Generated from:
 ; void g(int *);
 ; int f() {
 ;   int x = 23;
 ;   g(&x);
 ;   if (x == 42)
 ;     ++x;
 ;   return x; // check that x is not a constant here.
 ; }
 ; CHECK: ![[X:.*]] = !DILocalVariable(name: "x",
 ; CHECK: bb.0.entry:
-; CHECK:   DBG_VALUE 23, debug-use $noreg, ![[X]],
-; CHECK:   DBG_VALUE debug-use $rsp, debug-use $noreg, ![[X]], !DIExpression(DW_OP_plus_uconst, 4, DW_OP_deref),
+; CHECK:   DBG_VALUE 23, $noreg, ![[X]],
+; CHECK:   DBG_VALUE $rsp, $noreg, ![[X]], !DIExpression(DW_OP_plus_uconst, 4, DW_OP_deref),
 ; CHECK: bb.1.if.then:
-; CHECK:   DBG_VALUE 43, debug-use $noreg, ![[X]],
+; CHECK:   DBG_VALUE 43, $noreg, ![[X]],
 ; CHECK: bb.2.if.end:
-; CHECK-NOT:  DBG_VALUE 23, debug-use $noreg, ![[X]],
+; CHECK-NOT:  DBG_VALUE 23, $noreg, ![[X]],
 ; CHECK:   RETQ $eax
 
 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-apple-macosx10.11.0"
 
 ; Function Attrs: nounwind ssp uwtable
 define i32 @f() #0 !dbg !4 {
 entry:

llvm/trunk/test/DebugInfo/X86/live-debug-vars-discard-invalid.mir

 tracksRegLiveness: true
 body:             |
   bb.0:
     %1:gr64 = IMPLICIT_DEF
     %2:gr64 = IMPLICIT_DEF
 
   bb.1:
     ; This DBG_VALUE will be discarded (use before def of %0).
-    DBG_VALUE debug-use %0, debug-use $noreg, !18, !DIExpression(), debug-location !25
+    DBG_VALUE %0, $noreg, !18, !DIExpression(), debug-location !25
     %0:gr64 = IMPLICIT_DEF
     %0:gr64 = IMPLICIT_DEF
     %0:gr64 = IMPLICIT_DEF
     %0:gr64 = IMPLICIT_DEF
 
   bb.2:
     ; This DBG_VALUE will be discarded (%1 is defined earlier, but it is not live in, so we do not know where %1 is stored).
-    DBG_VALUE debug-use %1, debug-use $noreg, !18, !DIExpression(), debug-location !25
+    DBG_VALUE %1, $noreg, !18, !DIExpression(), debug-location !25
     %1:gr64 = IMPLICIT_DEF
     %1:gr64 = IMPLICIT_DEF
     %1:gr64 = IMPLICIT_DEF
     %1:gr64 = IMPLICIT_DEF
     ; This DBG_VALUE is kept, even if %1 is dead, it was defined in the prev instruction,
     ; so the value should be available for as long as the register allocated to %1 is live.
-    DBG_VALUE debug-use %1, debug-use $noreg, !18, !DIExpression(), debug-location !25
+    DBG_VALUE %1, $noreg, !18, !DIExpression(), debug-location !25
 
   bb.3:
     %1:gr64 = IMPLICIT_DEF
-    DBG_VALUE 0, debug-use $noreg, !23, !DIExpression(), debug-location !25
+    DBG_VALUE 0, $noreg, !23, !DIExpression(), debug-location !25
     ; This DBG_VALUE is kept, even if %1 is dead, it was defined in the prev non-dbg instruction,
     ; so the value should be available for as long as the register allocated to %1 is live.
-    DBG_VALUE debug-use %1, debug-use $noreg, !18, !DIExpression(), debug-location !25
+    DBG_VALUE %1, $noreg, !18, !DIExpression(), debug-location !25
 
   bb.4:
     ; All DBG_VALUEs here should survive. %2 is livein as it was defined in bb.0, and it has use/def in the BTS64rr instruction.
-    DBG_VALUE debug-use %2, debug-use $noreg, !18, !DIExpression(), debug-location !25
+    DBG_VALUE %2, $noreg, !18, !DIExpression(), debug-location !25
     %2:gr64 = BTS64rr %2, 0, implicit-def $eflags
-    DBG_VALUE 0, debug-use $noreg, !23, !DIExpression(), debug-location !25
-    DBG_VALUE debug-use %2, debug-use $noreg, !18, !DIExpression(), debug-location !25
+    DBG_VALUE 0, $noreg, !23, !DIExpression(), debug-location !25
+    DBG_VALUE %2, $noreg, !18, !DIExpression(), debug-location !25
     %2:gr64 = BTS64rr %2, 0, implicit-def $eflags
-    DBG_VALUE debug-use %2, debug-use $noreg, !18, !DIExpression(), debug-location !25
+    DBG_VALUE %2, $noreg, !18, !DIExpression(), debug-location !25
     %2:gr64 = BTS64rr %2, 0, implicit-def $eflags
-    DBG_VALUE debug-use %2, debug-use $noreg, !18, !DIExpression(), debug-location !25
+    DBG_VALUE %2, $noreg, !18, !DIExpression(), debug-location !25
 
   bb.5:
     RET 0, debug-location !32
 ...
 
 # CHECK-LABEL: name: foobar
 
 # CHECK-LABEL: bb.1:
-# CHECK:        DBG_VALUE debug-use $noreg
+# CHECK:        DBG_VALUE $noreg
 
 # CHECK-LABEL: bb.2:
-# CHECK:        DBG_VALUE debug-use $noreg
+# CHECK:        DBG_VALUE $noreg
 # CHECK-NEXT:   dead renamable $rcx = IMPLICIT_DEF
 # CHECK-NEXT:   dead renamable $rcx = IMPLICIT_DEF
 # CHECK-NEXT:   dead renamable $rcx = IMPLICIT_DEF
 # CHECK-NEXT:   dead renamable $rcx = IMPLICIT_DEF
-# CHECK-NEXT:   DBG_VALUE debug-use $rcx, debug-use $noreg, !18, !DIExpression()
+# CHECK-NEXT:   DBG_VALUE $rcx, $noreg, !18, !DIExpression()
 
 # CHECK-LABEL: bb.3:
 # CHECK:        dead renamable $rcx = IMPLICIT_DEF
-# CHECK-NEXT:   DBG_VALUE 0, debug-use $noreg, !23, !DIExpression()
-# CHECK-NEXT:   DBG_VALUE debug-use $rcx, debug-use $noreg, !18, !DIExpression()
+# CHECK-NEXT:   DBG_VALUE 0, $noreg, !23, !DIExpression()
+# CHECK-NEXT:   DBG_VALUE $rcx, $noreg, !18, !DIExpression()
 
 # CHECK-LABEL: bb.4:
 # CHECK:        liveins: $rax
-# CHECK:        DBG_VALUE debug-use $rax, debug-use $noreg, !18, !DIExpression()
+# CHECK:        DBG_VALUE $rax, $noreg, !18, !DIExpression()
 # CHECK-NEXT:   renamable $rax = BTS64rr killed renamable $rax, 0, implicit-def $eflags
-# CHECK-NEXT:   DBG_VALUE 0, debug-use $noreg, !23, !DIExpression()
-# CHECK-NEXT:   DBG_VALUE debug-use $rax, debug-use $noreg, !18, !DIExpression()
+# CHECK-NEXT:   DBG_VALUE 0, $noreg, !23, !DIExpression()
+# CHECK-NEXT:   DBG_VALUE $rax, $noreg, !18, !DIExpression()
 # CHECK-NEXT:   renamable $rax = BTS64rr killed renamable $rax, 0, implicit-def $eflags
-# CHECK-NEXT:   DBG_VALUE debug-use $rax, debug-use $noreg, !18, !DIExpression()
+# CHECK-NEXT:   DBG_VALUE $rax, $noreg, !18, !DIExpression()
 # CHECK-NEXT:   dead renamable $rax = BTS64rr killed renamable $rax, 0, implicit-def $eflags
 
 # CHECK-LABEL: bb.5:
 # CHECK-NEXT:   RET 0

llvm/trunk/test/DebugInfo/X86/live-debug-vars-dse.mir

bb.0.entry:
     %0 = COPY $ecx
     MOV32mr %stack.0.x.addr, 1, _, 0, _, %0 :: (store 4 into %ir.x.addr)
     DBG_VALUE %stack.0.x.addr, 0, !13, !DIExpression(), debug-location !14
     ADJCALLSTACKDOWN64 32, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !15
     %1 = LEA64r %stack.0.x.addr, 1, _, 0, _
     $rcx = COPY %1, debug-location !15
     CALL64pcrel32 @escape, csr_win64, implicit $rsp, implicit $ssp, implicit $rcx, implicit-def $rsp, implicit-def $ssp, debug-location !15
     ADJCALLSTACKUP64 32, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !15
-    DBG_VALUE 1, debug-use _, !13, !DIExpression(), debug-location !16
+    DBG_VALUE 1, _, !13, !DIExpression(), debug-location !16
     MOV32mi $rip, 1, _, @global, _, 1, debug-location !17 :: (store 4 into @global)
     DBG_VALUE %stack.0.x.addr, 0, !13, !DIExpression(), debug-location !18
     MOV32mi %stack.0.x.addr, 1, _, 0, _, 2, debug-location !18 :: (store 4 into %ir.x.addr)
     ADJCALLSTACKDOWN64 32, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !19
     $rcx = COPY %1, debug-location !19
     CALL64pcrel32 @escape, csr_win64, implicit $rsp, implicit $ssp, implicit $rcx, implicit-def $rsp, implicit-def $ssp, debug-location !19
     ADJCALLSTACKUP64 32, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !19
     RET 0, debug-location !20
 
 ...

llvm/trunk/test/DebugInfo/X86/live-debug-vars-index.mir

 
 ...
 ---
 name:            foo
 tracksRegLiveness: true
 body:             |
   bb.0:
 
-    DBG_VALUE debug-use $esi, debug-use $noreg, !13, !DIExpression(), debug-location !11
+    DBG_VALUE $esi, $noreg, !13, !DIExpression(), debug-location !11
     DBG_LABEL !8, debug-location !9
-    DBG_VALUE debug-use $edi, debug-use $noreg, !10, !DIExpression(), debug-location !11
+    DBG_VALUE $edi, $noreg, !10, !DIExpression(), debug-location !11
     RET 0, undef $eax, debug-location !12
 ...
 
 # CHECK-LABEL: name:            foo
 # CHECK: bb.0:
 # CHECK-DAG: DBG_LABEL
-# CHECK-DAG: DBG_VALUE debug-use $esi
-# CHECK-DAG: DBG_VALUE debug-use $edi
+# CHECK-DAG: DBG_VALUE $esi
+# CHECK-DAG: DBG_VALUE $edi

llvm/trunk/test/DebugInfo/X86/pr34545.ll

 ; RUN: llc -O1 -filetype=asm -mtriple x86_64-unknown-linux-gnu -mcpu=x86-64 -o - %s -stop-after=livedebugvars | FileCheck %s
 
 ; CHECK: $eax = MOV32rm
-; CHECK: DBG_VALUE debug-use $eax
+; CHECK: DBG_VALUE $eax
 ; CHECK: $eax = SHL32rCL killed renamable $eax
-; CHECK: DBG_VALUE debug-use $eax
-; CHECK: DBG_VALUE debug-use $rsp, 0, !{{[0-9]+}}, !DIExpression(DW_OP_constu, 4, DW_OP_minus)
-; CHECK: DBG_VALUE debug-use $eax
+; CHECK: DBG_VALUE $eax
+; CHECK: DBG_VALUE $rsp, 0, !{{[0-9]+}}, !DIExpression(DW_OP_constu, 4, DW_OP_minus)
+; CHECK: DBG_VALUE $eax
 ; CHECK: $eax = SHL32rCL killed renamable $eax
-; CHECK: DBG_VALUE debug-use $eax
+; CHECK: DBG_VALUE $eax
 ; CHECK: RETQ $eax
 
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"
 
 @var = local_unnamed_addr global i32 8, !dbg !0
 @sc = local_unnamed_addr global i32 1, !dbg !6
 

llvm/trunk/test/DebugInfo/X86/sdag-combine.ll

 ; Function Attrs: nounwind readnone speculatable
 declare void @llvm.dbg.declare(metadata, metadata, metadata) #0
 
 ; Function Attrs: nounwind readnone speculatable
 define swiftcc void @g() #0 !dbg !5 {
 entry:
   %0 = alloca %TSb, align 1
   %1 = call swiftcc i1 @f(), !dbg !7
-  ; CHECK: DBG_VALUE debug-use $rcx, debug-use $noreg, !8, !DIExpression(), debug-location !7
+  ; CHECK: DBG_VALUE $rcx, $noreg, !8, !DIExpression(), debug-location !7
   call void @llvm.dbg.value(metadata i1 %1, metadata !8, metadata !DIExpression()), !dbg !7
   %2 = getelementptr inbounds %TSb, %TSb* %0, i32 0, i32 0, !dbg !7
   store i1 %1, i1* %2, align 1, !dbg !7
   %3 = zext i1 %1 to i64, !dbg !7
   call void asm sideeffect "", "r"(i64 %3), !dbg !7
   ret void, !dbg !7
 }
 

llvm/trunk/test/DebugInfo/X86/sdag-dangling-dbgvalue.ll

 source_filename = "sdag-dangling-dbgvalue.c"
 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-apple-macosx10.4.0"
 
 %struct.SS = type { i32, i32 }
 
 @S = global %struct.SS { i32 23, i32 -17 }, align 4, !dbg !0
 
-; Verify that the def comes before the debug-use for foo1.
+; Verify that the def comes before the for foo1.
 ; TODO: Currently dbg.value for bar1 is dropped(?), is that expected?
 define i32 @test1() local_unnamed_addr #0 !dbg !17 {
 ; CHECK-LABEL: bb.0.entry1
 ; CHECK-NEXT:    [[REG1:%[0-9]+]]:gr64 =
-; CHECK-NEXT:    DBG_VALUE debug-use [[REG1]], debug-use $noreg, ![[FOO1]], !DIExpression()
+; CHECK-NEXT:    DBG_VALUE [[REG1]], $noreg, ![[FOO1]], !DIExpression()
 entry1:
   call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !20, metadata !DIExpression()), !dbg !23
   call void @llvm.dbg.value(metadata %struct.SS* null, metadata !22, metadata !DIExpression()), !dbg !24
   ret i32 ptrtoint (%struct.SS* @S to i32), !dbg !25
 }
 
-; Verify that the def comes before the debug-use for foo2 and bar2.
+; Verify that the def comes before the for foo2 and bar2.
 define i32 @test2() local_unnamed_addr #0 !dbg !26 {
 ; CHECK-LABEL: bb.0.entry2
 ; CHECK-NEXT:    [[REG2:%[0-9]+]]:gr64 =
-; CHECK-NEXT:    DBG_VALUE debug-use [[REG2]], debug-use $noreg, ![[FOO2]], !DIExpression()
-; CHECK-NEXT:    DBG_VALUE debug-use [[REG2]], debug-use $noreg, ![[BAR2]], !DIExpression()
+; CHECK-NEXT:    DBG_VALUE [[REG2]], $noreg, ![[FOO2]], !DIExpression()
+; CHECK-NEXT:    DBG_VALUE [[REG2]], $noreg, ![[BAR2]], !DIExpression()
 entry2:
   call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !28, metadata !DIExpression()), !dbg !30
   call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !29, metadata !DIExpression()), !dbg !31
   ret i32 add (i32 ptrtoint (%struct.SS* @S to i32), i32 ptrtoint (%struct.SS* @S to i32)), !dbg !32
 }
 
-; Verify that the def comes before the debug-use for foo3 and bar3.
+; Verify that the def comes before the for foo3 and bar3.
 define i32 @test3() local_unnamed_addr #0 !dbg !33 {
 ; CHECK-LABEL: bb.0.entry3
 ; CHECK-NEXT:    [[REG3:%[0-9]+]]:gr64 =
-; CHECK-NEXT:    DBG_VALUE debug-use [[REG3]], debug-use $noreg, ![[BAR3]], !DIExpression()
-; CHECK-NEXT:    DBG_VALUE debug-use [[REG3]], debug-use $noreg, ![[FOO3]], !DIExpression()
+; CHECK-NEXT:    DBG_VALUE [[REG3]], $noreg, ![[BAR3]], !DIExpression()
+; CHECK-NEXT:    DBG_VALUE [[REG3]], $noreg, ![[FOO3]], !DIExpression()
 entry3:
   call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !36, metadata !DIExpression()), !dbg !38
   call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !35, metadata !DIExpression()), !dbg !37
   ret i32 add (i32 ptrtoint (%struct.SS* @S to i32), i32 ptrtoint (%struct.SS* @S to i32)), !dbg !39
 }
 
-; Verify that the def comes before the debug-use for bar4.
+; Verify that the def comes before the for bar4.
 ; TODO: Currently dbg.value for foo4 is dropped. It is set to null and not
 ;       used. Just like in test1 it can be discussed if there should be a
 ;       DBG_VALUE for foo4 here.
 define i32 @test4() local_unnamed_addr #0 !dbg !40 {
 ; CHECK-LABEL: bb.0.entry4
 ; CHECK-NEXT:    [[REG4:%[0-9]+]]:gr64 =
-; CHECK-NEXT:    DBG_VALUE debug-use [[REG4]], debug-use $noreg, ![[BAR4]], !DIExpression()
+; CHECK-NEXT:    DBG_VALUE [[REG4]], $noreg, ![[BAR4]], !DIExpression()
 entry4:
   call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !42, metadata !DIExpression()), !dbg !44
   call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !43, metadata !DIExpression()), !dbg !45
   call void @llvm.dbg.value(metadata %struct.SS* null, metadata !42, metadata !DIExpression()), !dbg !44
   ret i32 ptrtoint (%struct.SS* @S to i32), !dbg !46
 }
 
 ; Verify that we do not get a DBG_VALUE that maps foo5 to @S here.
 ; TODO: foo5 is set to null, and it is not really used. Just like in test1 it
 ;       can be discussed if there should be a DBG_VALUE for foo5 here.
 define i32 @test5() local_unnamed_addr #0 !dbg !47 {
 ; CHECK-LABEL: bb.0.entry5:
 ; CHECK-NEXT:    [[REG5:%[0-9]+]]:gr64 =
-; CHECK-NEXT:    DBG_VALUE debug-use [[REG5]], debug-use $noreg, ![[BAR5]], !DIExpression()
-; CHECK-NOT:     DBG_VALUE debug-use [[REG5]], debug-use $noreg, ![[FOO5]], !DIExpression()
+; CHECK-NEXT:    DBG_VALUE [[REG5]], $noreg, ![[BAR5]], !DIExpression()
+; CHECK-NOT:     DBG_VALUE [[REG5]], $noreg, ![[FOO5]], !DIExpression()
 ; CHECK:         RET
 entry5:
   call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !49, metadata !DIExpression()), !dbg !51
   call void @llvm.dbg.value(metadata %struct.SS* @S, metadata !50, metadata !DIExpression()), !dbg !52
   call void @llvm.dbg.value(metadata %struct.SS* null, metadata !50, metadata !DIExpression()), !dbg !52
   ret i32 ptrtoint (%struct.SS* @S to i32), !dbg !53
 }
 

llvm/trunk/test/DebugInfo/X86/sdag-dbgvalue-phi-use-1.ll

 
 for.body.lr.ph:                                   ; preds = %entry
   %1 = load i32, i32* @end, align 4, !tbaa !31
   br label %for.body, !dbg !36
 
 for.cond.cleanup:                                 ; preds = %for.body, %entry
 ; CHECK-LABEL: bb.{{.*}}.for.cond.cleanup:
 ; CHECK:      [[REG1:%[0-9]+]]:gr32 = PHI
-; CHECK-NEXT: DBG_VALUE debug-use [[REG1]]
+; CHECK-NEXT: DBG_VALUE [[REG1]]
   %x.0.lcssa = phi i32 [ 9, %entry ], [ %add, %for.body ]
   call void @llvm.dbg.value(metadata i32 %x.0.lcssa, metadata !15, metadata !DIExpression()), !dbg !26
   %2 = bitcast [80 x i32]* %arr to i8*, !dbg !37
   call void @llvm.lifetime.start.p0i8(i64 320, i8* nonnull %2) #3, !dbg !37
   call void @llvm.dbg.declare(metadata [80 x i32]* %arr, metadata !19, metadata !DIExpression()), !dbg !38
   call void @llvm.dbg.value(metadata i32 0, metadata !24, metadata !DIExpression()), !dbg !39
   br label %for.body4, !dbg !40
 
 for.body:                                         ; preds = %for.body.lr.ph, %for.body
 ; CHECK-LABEL: bb.{{.*}}.for.body:
 ; CHECK:      [[REG2:%[0-9]+]]:gr32 = PHI
 ; CHECK-NEXT: [[REG3:%[0-9]+]]:gr32 = PHI
 ; CHECK-NEXT: [[REG4:%[0-9]+]]:gr32 = PHI
-; CHECK-NEXT: DBG_VALUE debug-use [[REG2]]
-; CHECK-NEXT: DBG_VALUE debug-use [[REG3]]
-; CHECK-NEXT: DBG_VALUE debug-use [[REG4]]
+; CHECK-NEXT: DBG_VALUE [[REG2]]
+; CHECK-NEXT: DBG_VALUE [[REG3]]
+; CHECK-NEXT: DBG_VALUE [[REG4]]
   %u.023 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
   %y.022 = phi i32 [ 13, %for.body.lr.ph ], [ %mul, %for.body ]
   %x.021 = phi i32 [ 9, %for.body.lr.ph ], [ %add, %for.body ]
   call void @llvm.dbg.value(metadata i32 %u.023, metadata !17, metadata !DIExpression()), !dbg !28
   call void @llvm.dbg.value(metadata i32 %y.022, metadata !16, metadata !DIExpression()), !dbg !27
   call void @llvm.dbg.value(metadata i32 %x.021, metadata !15, metadata !DIExpression()), !dbg !26
   %add = add nuw nsw i32 %y.022, %x.021, !dbg !41
   %mul = mul nsw i32 %y.022, 3, !dbg !43

llvm/trunk/test/DebugInfo/X86/sdag-dbgvalue-phi-use-2.ll

 
 for.body.lr.ph:                                   ; preds = %entry
   %1 = load i32, i32* @end, align 4, !tbaa !31
   br label %for.body, !dbg !36
 
 for.cond.cleanup:                                 ; preds = %for.body, %entry
 ; CHECK-LABEL: bb.{{.*}}.for.cond.cleanup:
 ; CHECK:      [[REG1:%[0-9]+]]:gr32 = PHI
-; CHECK-NEXT: DBG_VALUE debug-use [[REG1]]
+; CHECK-NEXT: DBG_VALUE [[REG1]]
   %x.0.lcssa = phi i32 [ 9, %entry ], [ %add, %for.body ]
   call void @llvm.dbg.value(metadata i32 %x.0.lcssa, metadata !15, metadata !DIExpression()), !dbg !26
   %2 = bitcast [80 x i32]* %arr to i8*, !dbg !37
   call void @llvm.lifetime.start.p0i8(i64 320, i8* nonnull %2) #3, !dbg !37
   call void @llvm.dbg.declare(metadata [80 x i32]* %arr, metadata !19, metadata !DIExpression()), !dbg !38
   call void @llvm.dbg.value(metadata i32 0, metadata !24, metadata !DIExpression()), !dbg !39
   br label %for.body4, !dbg !40
 
 for.body:                                         ; preds = %for.body.lr.ph, %for.body
 ; CHECK-LABEL: bb.{{.*}}.for.body:
 ; CHECK:      [[REG2:%[0-9]+]]:gr32 = PHI
 ; CHECK-NEXT: [[REG3:%[0-9]+]]:gr32 = PHI
 ; CHECK-NEXT: [[REG4:%[0-9]+]]:gr32 = PHI
-; CHECK-NEXT: DBG_VALUE debug-use [[REG3]], debug-use $noreg, !16
-; CHECK-NEXT: DBG_VALUE 555, debug-use $noreg, !17
+; CHECK-NEXT: DBG_VALUE [[REG3]], $noreg, !16
+; CHECK-NEXT: DBG_VALUE 555, $noreg, !17
 ; XXX: Shouldn't the following DBG_VALUE be placed after the add (ADD32rr).
-; CHECK-NEXT: DBG_VALUE debug-use [[REG2]], debug-use $noreg, !17
+; CHECK-NEXT: DBG_VALUE [[REG2]], $noreg, !17
 ; CHECK-NEXT: ADD32rr
 ; XXX: Shouldn't the following DBG_VALUE be placed after the mul (LEA etc).
-; CHECK-NEXT: DBG_VALUE 777, debug-use $noreg, !17
+; CHECK-NEXT: DBG_VALUE 777, $noreg, !17
 ; CHECK:      INC32r
 ; XXX: Shouldn't the following DBG_VALUE be placed after the icmp (the non-dead implicit def of $eflags)
-; CHECK:      DBG_VALUE debug-use [[REG4]]
+; CHECK:      DBG_VALUE [[REG4]]
 ; CHECK-NEXT: implicit-def $eflags
   %u.023 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
   %y.022 = phi i32 [ 13, %for.body.lr.ph ], [ %mul, %for.body ]
   %x.021 = phi i32 [ 9, %for.body.lr.ph ], [ %add, %for.body ]
   call void @llvm.dbg.value(metadata i32 %y.022, metadata !16, metadata !DIExpression()), !dbg !27
   ; This dbg.value has been manually added compared to dbg_value_phi_isel1.ll
   call void @llvm.dbg.value(metadata i32 555, metadata !17, metadata !DIExpression()), !dbg !28
   %add = add nuw nsw i32 %y.022, %x.021, !dbg !41

llvm/trunk/test/DebugInfo/X86/sdag-dbgvalue-phi-use-3.ll

 for.body:                                         ; preds = %for.body.lr.ph, %for.body
 ; CHECK-LABEL: bb.{{.*}}.for.body:
 ; CHECK:      [[REG2:%[0-9]+]]:gr32 = PHI
 ; CHECK-NEXT: [[REG3:%[0-9]+]]:gr32 = PHI
 ; CHECK-NEXT: [[REG4:%[0-9]+]]:gr32 = PHI
 ; CHECK-NEXT: [[REG5:%[0-9]+]]:gr32_nosp = PHI
 ; CHECK-NEXT: [[REG6:%[0-9]+]]:gr32 = PHI
 ; CHECK-NEXT: [[REG7:%[0-9]+]]:gr32 = PHI
-; CHECK-NEXT: DBG_VALUE debug-use [[REG2]], debug-use $noreg, !19, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
-; CHECK-NEXT: DBG_VALUE debug-use [[REG3]], debug-use $noreg, !19, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
-; CHECK-NEXT: DBG_VALUE debug-use [[REG4]], debug-use $noreg, !18, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
-; CHECK-NEXT: DBG_VALUE debug-use [[REG5]], debug-use $noreg, !18, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
-; CHECK-NEXT: DBG_VALUE debug-use [[REG6]], debug-use $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
-; CHECK-NEXT: DBG_VALUE debug-use [[REG7]], debug-use $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
+; CHECK-NEXT: DBG_VALUE [[REG2]], $noreg, !19, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
+; CHECK-NEXT: DBG_VALUE [[REG3]], $noreg, !19, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
+; CHECK-NEXT: DBG_VALUE [[REG4]], $noreg, !18, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
+; CHECK-NEXT: DBG_VALUE [[REG5]], $noreg, !18, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
+; CHECK-NEXT: DBG_VALUE [[REG6]], $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
+; CHECK-NEXT: DBG_VALUE [[REG7]], $noreg, !17, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
   %u.023 = phi i64 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
   %y.022 = phi i64 [ 13, %for.body.lr.ph ], [ %mul, %for.body ]
   %x.021 = phi i64 [ 9, %for.body.lr.ph ], [ %add, %for.body ]
   call void @llvm.dbg.value(metadata i64 %u.023, metadata !19, metadata !DIExpression()), !dbg !30
   call void @llvm.dbg.value(metadata i64 %y.022, metadata !18, metadata !DIExpression()), !dbg !29
   call void @llvm.dbg.value(metadata i64 %x.021, metadata !17, metadata !DIExpression()), !dbg !28
   %add = add nuw nsw i64 %y.022, %x.021, !dbg !43
   %mul = mul nsw i64 %y.022, 3, !dbg !45

llvm/trunk/test/DebugInfo/X86/sdag-dbgvalue-phi-use-4.ll

 ; RUN: llc -start-after=codegenprepare -stop-before expand-isel-pseudos -o - %s | FileCheck %s
 
 ; This is a reproducer based on the test case from PR37321.
 
 ; We verify that the fragment for the last DBG_VALUE is limited depending
 ; on the size of the original fragment (and that we do not emit more
 ; DBG_VALUE instructions than needed in case we cover the whole original
 ; fragment with just a few DBG_VALUE instructions).
 
 ; CHECK-LABEL: bb.{{.*}}.if.end36:
 ; CHECK:      [[REG1:%[0-9]+]]:gr32 = PHI
 ; CHECK-NEXT: [[REG2:%[0-9]+]]:gr32 = PHI
 ; CHECK-NEXT: [[REG3:%[0-9]+]]:gr32 = PHI
-; CHECK-NEXT: DBG_VALUE debug-use [[REG1]], debug-use $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
-; CHECK-NEXT: DBG_VALUE debug-use [[REG2]], debug-use $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
-; CHECK-NEXT: DBG_VALUE debug-use [[REG3]], debug-use $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 64, 16)
-; CHECK-NEXT: DBG_VALUE debug-use [[REG1]], debug-use $noreg, !12, !DIExpression(DW_OP_LLVM_fragment, 10, 32)
-; CHECK-NEXT: DBG_VALUE debug-use [[REG2]], debug-use $noreg, !12, !DIExpression(DW_OP_LLVM_fragment, 42, 13)
+; CHECK-NEXT: DBG_VALUE [[REG1]], $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 0, 32)
+; CHECK-NEXT: DBG_VALUE [[REG2]], $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 32, 32)
+; CHECK-NEXT: DBG_VALUE [[REG3]], $noreg, !13, !DIExpression(DW_OP_LLVM_fragment, 64, 16)
+; CHECK-NEXT: DBG_VALUE [[REG1]], $noreg, !12, !DIExpression(DW_OP_LLVM_fragment, 10, 32)
+; CHECK-NEXT: DBG_VALUE [[REG2]], $noreg, !12, !DIExpression(DW_OP_LLVM_fragment, 42, 13)
 ; CHECK-NOT:  DBG_VALUE
 
 target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
 target triple = "i686-w64-windows-gnu"
 
 ; Function Attrs: nounwind readnone
 define dso_local i64 @nextafterl(i80 %a) local_unnamed_addr #0 !dbg !6 {
 entry:

llvm/trunk/test/DebugInfo/X86/sdag-legalize-multires.ll

 ; CHECK: ![[RSIN:.*]] = !DILocalVariable(name: "rsin"
 
 define hidden swiftcc void @f() #0 !dbg !8 {
 entry:
   ; CHECK: CALL64pcrel32 &__sincosf_stret
   %0 = call float @llvm.cos.f32(float 1.500000e+00), !dbg !13
   ; CHECK: $xmm1 = MOVAPSrr $xmm0
   call void @llvm.dbg.value(metadata float %0, metadata !15, metadata !DIExpression()), !dbg !13
-  ; CHECK: DBG_VALUE debug-use {{.*}}$xmm1, {{.*}}, ![[RSIN]], !DIExpression(),
+  ; CHECK: DBG_VALUE {{.*}}$xmm1, {{.*}}, ![[RSIN]], !DIExpression(),
   %1 = call float @llvm.sin.f32(float 1.500000e+00), !dbg !13
   call void @llvm.dbg.value(metadata float %1, metadata !11, metadata !DIExpression()), !dbg !13
-  ; CHECK: DBG_VALUE debug-use {{.*}}$xmm0, {{.*}}, ![[RCOS]], !DIExpression(),
+  ; CHECK: DBG_VALUE {{.*}}$xmm0, {{.*}}, ![[RCOS]], !DIExpression(),
   call void @g(float %0, float %1), !dbg !13
   ret void, !dbg !13
 }
 
 attributes #0 = { noinline nounwind optnone ssp uwtable "target-features"="+sse,+sse2,+sse3,+sse4.1,+ssse3,+x87" }
 
 !llvm.dbg.cu = !{!0}
 !llvm.module.flags = !{!3, !4}

llvm/trunk/test/DebugInfo/X86/sdag-salvage-add.ll

 ;   use(b);
 ; }
 ;
 ; The debug info is attached to the ADD 4096 operation, which doesn't survive
 ; instruction selection as it is folded into the load.
 ;
 ; CHECK:   ![[S4:.*]] = !DILocalVariable(name: "s4", 
 ; CHECK:   ![[MYVAR:.*]] = !DILocalVariable(name: "myVar", 
-; CHECK:      DBG_VALUE debug-use $rax, debug-use $noreg, ![[MYVAR]],
+; CHECK:      DBG_VALUE $rax, $noreg, ![[MYVAR]],
 ; CHECK-SAME:           !DIExpression(DW_OP_plus_uconst, 4096, DW_OP_stack_value)
-; CHECK-NEXT: DBG_VALUE debug-use $rax, debug-use $noreg, ![[S4]],
+; CHECK-NEXT: DBG_VALUE $rax, $noreg, ![[S4]],
 ; CHECK-SAME:           !DIExpression(DW_OP_plus_uconst, 4096, DW_OP_stack_value)
 ; CHECK-NEXT: $rdi = MOV64rm killed renamable $rax, 1, $noreg, 4096, $noreg,
 
 source_filename = "test.c"
 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-apple-macosx10.13.0"
 
 %struct.S3 = type { i64 }

llvm/trunk/test/DebugInfo/X86/sdagsplit-1.ll

 ; RUN: llc %s -stop-after=livedebugvars -o %t
 ; RUN: cat %t | FileCheck %s
 ;
 ; Test that we can emit debug info for large values that are split
 ; up across multiple registers by the SelectionDAG type legalizer.
 ;
 ;    // Compile with -O1 -m32.
 ;    long long foo (long long a, long long b)
 ;    {
 ;      long long res = b+1;
 ;      if ( a == b )
 ;        return res;
 ;      return 0;
 ;    }
 ;
-; CHECK-DAG: DBG_VALUE debug-use ${{[a-z]+}}, debug-use $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !{{[0-9]+}}
-; CHECK-DAG: DBG_VALUE debug-use ${{[a-z]+}}, debug-use $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 32, 32), debug-location !{{[0-9]+}}
+; CHECK-DAG: DBG_VALUE ${{[a-z]+}}, $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 0, 32), debug-location !{{[0-9]+}}
+; CHECK-DAG: DBG_VALUE ${{[a-z]+}}, $noreg, !{{[0-9]+}}, !DIExpression(DW_OP_LLVM_fragment, 32, 32), debug-location !{{[0-9]+}}
 
 ; ModuleID = 'sdagsplit-1.c'
 target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
 target triple = "i386"
 
 ; Function Attrs: nounwind readnone
 define i64 @foo(i64 %a, i64 %b) local_unnamed_addr #0 !dbg !8 {
 entry: