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Differential D128212 Diff 452672 llvm/test/DebugInfo/MIR/X86/live-debug-values-restore.mir

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

# RUN: llc -run-pass livedebugvalues -march=x86-64 -o - %s \ # RUN: llc -run-pass livedebugvalues -march=x86-64 -o - %s \
# RUN: -experimental-debug-variable-locations=true | FileCheck %s # RUN: -experimental-debug-variable-locations=true | FileCheck %s
# Generated from the following source with: # Generated from the following source with:
# clang -g -mllvm -stop-before=livedebugvalues -S -O2 test.c -o test.mir # clang -g -mllvm -stop-before=livedebugvalues -S -O2 test.c -o test.mir
# Then more functions added to test for extra behaviours with complex # Then more functions added to test for extra behaviours with complex
# expressions: # expressions:
# 'g': test for a crash from PR42773 # 'g': test for a crash from PR42773
# 'h': complex expressions should be restored # 'h': complex expressions should be restored
# 'i': spills should be restored across block boundaries # 'i': spills should be restored across block boundaries
# 'j': indirect DBG_VALUEs should be indirect after restoration # 'j': indirect DBG_VALUEs should be indirect after restoration
# 'k': variadic debug values should be restored
# #define FORCE_SPILL() \ # #define FORCE_SPILL() \
# __asm volatile("" : : : \ # __asm volatile("" : : : \
# "rax", "rbx", "rcx", "rdx", "rsi", "rdi", "rbp", "r8", \ # "rax", "rbx", "rcx", "rdx", "rsi", "rdi", "rbp", "r8", \
# "r9", "r10", "r11", "r12", "r13", "r14", "r15") # "r9", "r10", "r11", "r12", "r13", "r14", "r15")
# int f(int *p) { # int f(int *p) {
# if (p) { # if (p) {
# FORCE_SPILL(); # FORCE_SPILL();
# } # }
# return *(p + 1); # return *(p + 1);
# } # }
# Pick out DILocalVariable numbers for "p", "q" and "r" etc # Pick out DILocalVariable numbers for "p", "q" and "r" etc
# CHECK: ![[PVAR:[0-9]+]] = !DILocalVariable(name: "p", # CHECK: ![[PVAR:[0-9]+]] = !DILocalVariable(name: "p",
# CHECK: ![[QVAR:[0-9]+]] = !DILocalVariable(name: "q", # CHECK: ![[QVAR:[0-9]+]] = !DILocalVariable(name: "q",
# CHECK: ![[RVAR:[0-9]+]] = !DILocalVariable(name: "r", # CHECK: ![[RVAR:[0-9]+]] = !DILocalVariable(name: "r",
# CHECK: ![[SVAR:[0-9]+]] = !DILocalVariable(name: "s", # CHECK: ![[SVAR:[0-9]+]] = !DILocalVariable(name: "s",
# CHECK: ![[TVAR:[0-9]+]] = !DILocalVariable(name: "t", # CHECK: ![[TVAR:[0-9]+]] = !DILocalVariable(name: "t",
# CHECK: ![[UVAR:[0-9]+]] = !DILocalVariable(name: "u",
# Ascertain that the spill has been recognized and manifested in a DBG_VALUE. # Ascertain that the spill has been recognized and manifested in a DBG_VALUE.
# CHECK: MOV64mr $rsp,{{.*-8.*}}killed{{.*}}$rdi :: (store (s64) into %stack.0) # CHECK: MOV64mr $rsp,{{.*-8.*}}killed{{.*}}$rdi :: (store (s64) into %stack.0)
# CHECK-NEXT: DBG_VALUE $rsp,{{.*}}![[PVAR]],{{.*}}!DIExpression(DW_OP_constu, 8, DW_OP_minus) # CHECK-NEXT: DBG_VALUE $rsp,{{.*}}![[PVAR]],{{.*}}!DIExpression(DW_OP_constu, 8, DW_OP_minus)
# Check for the restore. # Check for the restore.
# CHECK: $rdi = MOV64rm $rsp,{{.*-8.*}}:: (load (s64) from %stack.0) # CHECK: $rdi = MOV64rm $rsp,{{.*-8.*}}:: (load (s64) from %stack.0)
# CHECK-NEXT: $rax = MOV64ri 0 # CHECK-NEXT: $rax = MOV64ri 0
▲ Show 20 Lines • Show All 81 Lines • ▼ Show 20 Lines if.then: ; preds = %entry
tail call void asm sideeffect "", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{dirflag},~{fpsr},~{flags}"(), !dbg !409, !srcloc !411 tail call void asm sideeffect "", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{dirflag},~{fpsr},~{flags}"(), !dbg !409, !srcloc !411
br label %if.end, !dbg !412 br label %if.end, !dbg !412
if.end: ; preds = %entry, %if.then if.end: ; preds = %entry, %if.then
%add.ptr = getelementptr inbounds i32, i32* %p, i64 1, !dbg !413 %add.ptr = getelementptr inbounds i32, i32* %p, i64 1, !dbg !413
%0 = load i32, i32* %add.ptr, align 4, !dbg !414, !tbaa !24 %0 = load i32, i32* %add.ptr, align 4, !dbg !414, !tbaa !24
ret i32 %0, !dbg !415 ret i32 %0, !dbg !415
} }
define dso_local i32 @k(i32* readonly %p) local_unnamed_addr !dbg !507 {
entry:
call void @llvm.dbg.value(metadata i32* %p, metadata !513, metadata !DIExpression()), !dbg !514
%tobool = icmp eq i32* %p, null, !dbg !515
br i1 %tobool, label %if.end, label %if.then, !dbg !517
if.then: ; preds = %entry
tail call void asm sideeffect "", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{dirflag},~{fpsr},~{flags}"(), !dbg !518, !srcloc !520
br label %if.end, !dbg !521
if.end: ; preds = %entry, %if.then
%add.ptr = getelementptr inbounds i32, i32* %p, i64 1, !dbg !522
%0 = load i32, i32* %add.ptr, align 4, !dbg !523, !tbaa !24
ret i32 %0, !dbg !528
}
declare void @llvm.dbg.value(metadata, metadata, metadata) declare void @llvm.dbg.value(metadata, metadata, metadata)
!llvm.dbg.cu = !{!0} !llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!3, !4, !5} !llvm.module.flags = !{!3, !4, !5}
!llvm.ident = !{!6} !llvm.ident = !{!6}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 9.0.0 (https://git.llvm.org/git/clang.git/ 57a6ce7ac318de98e3e777e09cb9ed8282b5cc03) (https://git.llvm.org/git/llvm.git/ ff54a19e4912d7f15cb02798a7f2048441bff751)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 9.0.0 (https://git.llvm.org/git/clang.git/ 57a6ce7ac318de98e3e777e09cb9ed8282b5cc03) (https://git.llvm.org/git/llvm.git/ ff54a19e4912d7f15cb02798a7f2048441bff751)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
!1 = !DIFile(filename: "test2.c", directory: "/home/test") !1 = !DIFile(filename: "test2.c", directory: "/home/test")
Show All 19 Lines--- |
!21 = !DILocation(line: 8, column: 3, scope: !19) !21 = !DILocation(line: 8, column: 3, scope: !19)
!22 = !DILocation(line: 9, column: 14, scope: !7) !22 = !DILocation(line: 9, column: 14, scope: !7)
!23 = !DILocation(line: 9, column: 10, scope: !7) !23 = !DILocation(line: 9, column: 10, scope: !7)
!24 = !{!25, !25, i64 0} !24 = !{!25, !25, i64 0}
!25 = !{!"int", !26, i64 0} !25 = !{!"int", !26, i64 0}
!26 = !{!"omnipotent char", !27, i64 0} !26 = !{!"omnipotent char", !27, i64 0}
!27 = !{!"Simple C/C++ TBAA"} !27 = !{!"Simple C/C++ TBAA"}
!28 = !DILocation(line: 9, column: 3, scope: !7) !28 = !DILocation(line: 9, column: 3, scope: !7)
!29 = !DILocalVariable(name: "p0", scope: !7, file: !1, line: 5, type: !11)
!101 = !DIBasicType(name: "looong int", size: 64, encoding: DW_ATE_signed) !101 = !DIBasicType(name: "looong int", size: 64, encoding: DW_ATE_signed)
!107 = distinct !DISubprogram(name: "g", scope: !0, file: !1, line: 105, type: !8, scopeLine: 105, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !112) !107 = distinct !DISubprogram(name: "g", scope: !0, file: !1, line: 105, type: !8, scopeLine: 105, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !112)
!112 = !{!113} !112 = !{!113}
!113 = !DILocalVariable(name: "q", arg: 1, scope: !107, file: !1, line: 105, type: !101) !113 = !DILocalVariable(name: "q", arg: 1, scope: !107, file: !1, line: 105, type: !101)
!114 = !DILocation(line: 105, column: 12, scope: !107) !114 = !DILocation(line: 105, column: 12, scope: !107)
!115 = !DILocation(line: 106, column: 7, scope: !116) !115 = !DILocation(line: 106, column: 7, scope: !116)
!116 = distinct !DILexicalBlock(scope: !107, file: !1, line: 106, column: 7) !116 = distinct !DILexicalBlock(scope: !107, file: !1, line: 106, column: 7)
!117 = !DILocation(line: 106, column: 7, scope: !107) !117 = !DILocation(line: 106, column: 7, scope: !107)
▲ Show 20 Lines • Show All 44 Lines • ▼ Show 20 Lines--- |
!408 = !DILocation(line: 106, column: 7, scope: !402) !408 = !DILocation(line: 106, column: 7, scope: !402)
!409 = !DILocation(line: 107, column: 5, scope: !410) !409 = !DILocation(line: 107, column: 5, scope: !410)
!410 = distinct !DILexicalBlock(scope: !407, file: !1, line: 106, column: 10) !410 = distinct !DILexicalBlock(scope: !407, file: !1, line: 106, column: 10)
!411 = !{i32 -2147471544} !411 = !{i32 -2147471544}
!412 = !DILocation(line: 108, column: 3, scope: !410) !412 = !DILocation(line: 108, column: 3, scope: !410)
!413 = !DILocation(line: 109, column: 14, scope: !402) !413 = !DILocation(line: 109, column: 14, scope: !402)
!414 = !DILocation(line: 109, column: 10, scope: !402) !414 = !DILocation(line: 109, column: 10, scope: !402)
!415 = !DILocation(line: 109, column: 3, scope: !402) !415 = !DILocation(line: 109, column: 3, scope: !402)
!501 = !DIBasicType(name: "looong int", size: 64, encoding: DW_ATE_signed)
!507 = distinct !DISubprogram(name: "k", scope: !0, file: !1, line: 105, type: !8, scopeLine: 105, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !512)
!512 = !{!513}
!513 = !DILocalVariable(name: "u", arg: 1, scope: !507, file: !1, line: 105, type: !501)
!514 = !DILocation(line: 105, column: 12, scope: !507)
!515 = !DILocation(line: 106, column: 7, scope: !516)
!516 = distinct !DILexicalBlock(scope: !507, file: !1, line: 106, column: 7)
!517 = !DILocation(line: 106, column: 7, scope: !507)
!518 = !DILocation(line: 107, column: 5, scope: !519)
!519 = distinct !DILexicalBlock(scope: !516, file: !1, line: 106, column: 10)
!520 = !{i32 -2147471544}
!521 = !DILocation(line: 108, column: 3, scope: !519)
!522 = !DILocation(line: 109, column: 14, scope: !507)
!523 = !DILocation(line: 109, column: 10, scope: !507)
!528 = !DILocation(line: 109, column: 3, scope: !507)
... ...
--- ---
name: f name: f
alignment: 16 alignment: 16
exposesReturnsTwice: false exposesReturnsTwice: false
legalized: false legalized: false
regBankSelected: false regBankSelected: false
selected: false selected: false
▲ Show 20 Lines • Show All 508 Lines • ▼ Show 20 Linesbody: |
bb.2.if.end: bb.2.if.end:
liveins: $rdi, $rbx, $r12, $r13, $r14, $r15, $rbp liveins: $rdi, $rbx, $r12, $r13, $r14, $r15, $rbp
renamable $eax = MOV32rm killed renamable $rdi, 1, $noreg, 4, $noreg, debug-location !414 :: (load (s32) from %ir.add.ptr, !tbaa !24) renamable $eax = MOV32rm killed renamable $rdi, 1, $noreg, 4, $noreg, debug-location !414 :: (load (s32) from %ir.add.ptr, !tbaa !24)
RET64 $eax, debug-location !415 RET64 $eax, debug-location !415
... ...
---
# Test that if the values used by a variable with a variadic debug value are
# spilt and restored, we correctly track each value individually.
# This third function tests that complex expressions are spilt, and restored
# correctly within a basic block.
OrlandoUnsubmitted
Not Done
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# CHECK-LABEL: name: k
# CHECK-LABEL: bb.0.entry:
# CHECK: DBG_VALUE_LIST ![[UVAR]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_plus_uconst, 1, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $r10
# CHECK-LABEL: bb.1.if.then:
# CHECK: DBG_VALUE_LIST ![[UVAR]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_plus_uconst, 1, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $r10
# CHECK: DBG_VALUE_LIST ![[UVAR]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_constu, 8, DW_OP_minus, DW_OP_deref, DW_OP_plus_uconst, 1, DW_OP_LLVM_arg, 1, DW_OP_plus), $rsp, $r10
# CHECK: DBG_VALUE_LIST ![[UVAR]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_constu, 8, DW_OP_minus, DW_OP_deref, DW_OP_plus_uconst, 1, DW_OP_LLVM_arg, 1, DW_OP_constu, 16, DW_OP_minus, DW_OP_deref, DW_OP_plus), $rsp, $rsp
# CHECK: DBG_VALUE_LIST ![[UVAR]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_plus_uconst, 1, DW_OP_LLVM_arg, 1, DW_OP_constu, 16, DW_OP_minus, DW_OP_deref, DW_OP_plus), $rdi, $rsp
# CHECK: DBG_VALUE_LIST ![[UVAR]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_plus_uconst, 1, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $r10
# CHECK-LABEL: bb.2.if.end:
# CHECK: DBG_VALUE_LIST ![[UVAR]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_plus_uconst, 1, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $r10
name: k
alignment: 16
tracksRegLiveness: true
liveins:
- { reg: '$rdi', virtual-reg: '' }
- { reg: '$r10', virtual-reg: '' }
frameInfo:
stackSize: 48
offsetAdjustment: -48
maxAlignment: 8
cvBytesOfCalleeSavedRegisters: 48
localFrameSize: 0
fixedStack:
- { id: 0, type: spill-slot, offset: -56, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$rbx', callee-saved-restored: true, debug-info-variable: '',
debug-info-expression: '', debug-info-location: '' }
- { id: 1, type: spill-slot, offset: -48, size: 8, alignment: 16, stack-id: default,
callee-saved-register: '$r12', callee-saved-restored: true, debug-info-variable: '',
debug-info-expression: '', debug-info-location: '' }
- { id: 2, type: spill-slot, offset: -40, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$r13', callee-saved-restored: true, debug-info-variable: '',
debug-info-expression: '', debug-info-location: '' }
- { id: 3, type: spill-slot, offset: -32, size: 8, alignment: 16, stack-id: default,
callee-saved-register: '$r14', callee-saved-restored: true, debug-info-variable: '',
debug-info-expression: '', debug-info-location: '' }
- { id: 4, type: spill-slot, offset: -24, size: 8, alignment: 8, stack-id: default,
callee-saved-register: '$r15', callee-saved-restored: true, debug-info-variable: '',
debug-info-expression: '', debug-info-location: '' }
- { id: 5, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default,
callee-saved-register: '$rbp', callee-saved-restored: true, debug-info-variable: '',
debug-info-expression: '', debug-info-location: '' }
stack:
- { id: 0, name: '', type: spill-slot, offset: -64, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 1, name: '', type: spill-slot, offset: -72, size: 8, alignment: 8,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
constants: []
body: |
bb.0.entry:
successors: %bb.2(0x30000000), %bb.1(0x50000000)
liveins: $rdi, $r10, $rbx, $r12, $r13, $r14, $r15, $rbp
DBG_VALUE_LIST !513, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_plus_uconst, 1, DW_OP_LLVM_arg, 1, DW_OP_plus), $rdi, $r10, debug-location !514
TEST64rr renamable $rdi, renamable $rdi, implicit-def $eflags, debug-location !515
JCC_1 %bb.2, 4, implicit $eflags, debug-location !517
bb.1.if.then:
successors: %bb.2(0x80000000)
liveins: $rdi, $r10, $rbp, $r15, $r14, $r13, $r12, $rbx
frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 16
frame-setup PUSH64r killed $r15, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 24
frame-setup PUSH64r killed $r14, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 32
frame-setup PUSH64r killed $r13, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 40
frame-setup PUSH64r killed $r12, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 48
frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 56
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
CFI_INSTRUCTION offset $rbp, -16
MOV64mr $rsp, 1, $noreg, -8, $noreg, killed renamable $rdi :: (store (s64) into %stack.0)
MOV64mr $rsp, 1, $noreg, -16, $noreg, killed renamable $r10 :: (store (s64) into %stack.1)
INLINEASM &"", 1, 12, implicit-def dead early-clobber $rax, 12, implicit-def dead early-clobber $rbx, 12, implicit-def dead early-clobber $rcx, 12, implicit-def dead early-clobber $rdx, 12, implicit-def dead early-clobber $rsi, 12, implicit-def dead early-clobber $rdi, 12, implicit-def dead early-clobber $rbp, 12, implicit-def dead early-clobber $r8, 12, implicit-def dead early-clobber $r9, 12, implicit-def dead early-clobber $r10, 12, implicit-def dead early-clobber $r11, 12, implicit-def dead early-clobber $r12, 12, implicit-def dead early-clobber $r13, 12, implicit-def dead early-clobber $r14, 12, implicit-def dead early-clobber $r15, 12, implicit-def dead early-clobber $eflags, !520, debug-location !518
renamable $rdi = MOV64rm $rsp, 1, $noreg, -8, $noreg :: (load (s64) from %stack.0)
renamable $r10 = MOV64rm $rsp, 1, $noreg, -16, $noreg :: (load (s64) from %stack.1)
; Clobber stack location to force variable location to move to $rdi.
$rax = MOV64ri 0
MOV64mr $rsp, 1, _, -8, _, renamable $rax :: (store (s64) into %stack.0)
MOV64mr $rsp, 1, _, -16, _, killed renamable $rax :: (store (s64) into %stack.1)
$rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 48
$r12 = frame-destroy POP64r implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 40
$r13 = frame-destroy POP64r implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 32
$r14 = frame-destroy POP64r implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 24
$r15 = frame-destroy POP64r implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 16
$rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp
CFI_INSTRUCTION def_cfa_offset 8
bb.2.if.end:
liveins: $rdi, $rbx, $r12, $r13, $r14, $r15, $rbp
renamable $eax = MOV32rm killed renamable $rdi, 1, $noreg, 4, $noreg, debug-location !523 :: (load (s32) from %ir.add.ptr, !tbaa !24)
RET64 $eax, debug-location !528
...