diff --git a/llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp b/llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp --- a/llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp +++ b/llvm/lib/Target/ARM/ARMLowOverheadLoops.cpp @@ -1460,14 +1460,15 @@ void ARMLowOverheadLoops::ConvertVPTBlocks(LowOverheadLoop &LoLoop) { auto RemovePredicate = [](MachineInstr *MI) { + if (MI->isDebugInstr()) + return; LLVM_DEBUG(dbgs() << "ARM Loops: Removing predicate from: " << *MI); - if (int PIdx = llvm::findFirstVPTPredOperandIdx(*MI)) { - assert(MI->getOperand(PIdx).getImm() == ARMVCC::Then && - "Expected Then predicate!"); - MI->getOperand(PIdx).setImm(ARMVCC::None); - MI->getOperand(PIdx+1).setReg(0); - } else - llvm_unreachable("trying to unpredicate a non-predicated instruction"); + int PIdx = llvm::findFirstVPTPredOperandIdx(*MI); + assert(PIdx >= 1 && "Trying to unpredicate a non-predicated instruction"); + assert(MI->getOperand(PIdx).getImm() == ARMVCC::Then && + "Expected Then predicate!"); + MI->getOperand(PIdx).setImm(ARMVCC::None); + MI->getOperand(PIdx + 1).setReg(0); }; for (auto &Block : LoLoop.getVPTBlocks()) { @@ -1511,8 +1512,13 @@ // - Insert a new vpst to predicate the instruction(s) that following // the divergent vpr def. MachineInstr *Divergent = VPTState::getDivergent(Block); + MachineBasicBlock *MBB = Divergent->getParent(); auto DivergentNext = ++MachineBasicBlock::iterator(Divergent); + while (DivergentNext != MBB->end() && DivergentNext->isDebugInstr()) + ++DivergentNext; + bool DivergentNextIsPredicated = + DivergentNext != MBB->end() && getVPTInstrPredicate(*DivergentNext) != ARMVCC::None; for (auto I = ++MachineBasicBlock::iterator(VPST), E = DivergentNext; diff --git a/llvm/test/CodeGen/Thumb2/LowOverheadLoops/skip-vpt-debug.mir b/llvm/test/CodeGen/Thumb2/LowOverheadLoops/skip-vpt-debug.mir new file mode 100644 --- /dev/null +++ b/llvm/test/CodeGen/Thumb2/LowOverheadLoops/skip-vpt-debug.mir @@ -0,0 +1,330 @@ +# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py +# RUN: llc -mtriple=thumbv8.1m.main -mattr=+mve -run-pass=arm-low-overhead-loops %s -o - --verify-machineinstrs | FileCheck %s +--- | + ; ModuleID = 'skip-vpt-debug.ll' + source_filename = "skip-vpt-debug.c" + target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64" + target triple = "thumbv8.1m.main-arm-none-eabihf" + + ; Function Attrs: nofree norecurse nounwind optsize + define hidden void @arm_max_no_idx_f32(float* nocapture readonly %pSrc, i32 %blockSize, float* nocapture %pResult) local_unnamed_addr #0 !dbg !13 { + entry: + call void @llvm.dbg.value(metadata float* %pSrc, metadata !24, metadata !DIExpression()), !dbg !29 + call void @llvm.dbg.value(metadata i32 %blockSize, metadata !25, metadata !DIExpression()), !dbg !29 + call void @llvm.dbg.value(metadata float* %pResult, metadata !26, metadata !DIExpression()), !dbg !29 + call void @llvm.dbg.value(metadata float 0x3810000000000000, metadata !27, metadata !DIExpression()), !dbg !29 + %cmp.not7 = icmp eq i32 %blockSize, 0, !dbg !30 + br i1 %cmp.not7, label %while.end, label %vector.ph, !dbg !31 + + vector.ph: ; preds = %entry + %n.rnd.up = add i32 %blockSize, 3, !dbg !31 + %n.vec = and i32 %n.rnd.up, -4, !dbg !31 + %0 = add i32 %n.vec, -4, !dbg !31 + %1 = lshr i32 %0, 2, !dbg !31 + %2 = add nuw nsw i32 %1, 1, !dbg !31 + %3 = call i32 @llvm.start.loop.iterations.i32(i32 %2), !dbg !31 + br label %vector.body, !dbg !31 + + vector.body: ; preds = %vector.body, %vector.ph + %lsr.iv1 = phi float* [ %scevgep, %vector.body ], [ %pSrc, %vector.ph ] + %vec.phi = phi <4 x float> [ , %vector.ph ], [ %10, %vector.body ] + %4 = phi i32 [ %3, %vector.ph ], [ %11, %vector.body ] + %5 = phi i32 [ %blockSize, %vector.ph ], [ %7, %vector.body ] + %lsr.iv12 = bitcast float* %lsr.iv1 to <4 x float>* + %6 = call <4 x i1> @llvm.arm.mve.vctp32(i32 %5) + %7 = sub i32 %5, 4 + %wide.masked.load = call <4 x float> @llvm.masked.load.v4f32.p0v4f32(<4 x float>* %lsr.iv12, i32 4, <4 x i1> %6, <4 x float> poison), !dbg !32, !tbaa !34 + %8 = fcmp nnan ninf nsz olt <4 x float> %vec.phi, %wide.masked.load, !dbg !38 + %9 = and <4 x i1> %6, %8, !dbg !40 + %10 = select <4 x i1> %9, <4 x float> %wide.masked.load, <4 x float> %vec.phi, !dbg !40 + %scevgep = getelementptr float, float* %lsr.iv1, i32 4 + %11 = call i32 @llvm.loop.decrement.reg.i32(i32 %4, i32 1) + %12 = icmp ne i32 %11, 0 + br i1 %12, label %vector.body, label %middle.block, !llvm.loop !41 + + middle.block: ; preds = %vector.body + %13 = call nnan ninf nsz float @llvm.vector.reduce.fmax.v4f32(<4 x float> %10), !dbg !31 + br label %while.end, !dbg !45 + + while.end: ; preds = %middle.block, %entry + %maxValue.0.lcssa = phi float [ 0x3810000000000000, %entry ], [ %13, %middle.block ], !dbg !29 + store float %maxValue.0.lcssa, float* %pResult, align 4, !dbg !45, !tbaa !34 + ret void, !dbg !46 + } + + ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn + declare void @llvm.dbg.value(metadata, metadata, metadata) #1 + + ; Function Attrs: nofree nosync nounwind readnone willreturn + declare <4 x i1> @llvm.get.active.lane.mask.v4i1.i32(i32, i32) #2 + + ; Function Attrs: argmemonly nofree nosync nounwind readonly willreturn + declare <4 x float> @llvm.masked.load.v4f32.p0v4f32(<4 x float>*, i32 immarg, <4 x i1>, <4 x float>) #3 + + ; Function Attrs: nofree nosync nounwind readnone willreturn + declare float @llvm.vector.reduce.fmax.v4f32(<4 x float>) #2 + + ; Function Attrs: noduplicate nofree nosync nounwind willreturn + declare i32 @llvm.start.loop.iterations.i32(i32) #4 + + ; Function Attrs: noduplicate nofree nosync nounwind willreturn + declare i32 @llvm.loop.decrement.reg.i32(i32, i32) #4 + + ; Function Attrs: nounwind readnone + declare <4 x i1> @llvm.arm.mve.vctp32(i32) #5 + + attributes #0 = { nofree norecurse nounwind optsize "denormal-fp-math"="preserve-sign,preserve-sign" "denormal-fp-math-f32"="ieee,ieee" "frame-pointer"="none" "no-infs-fp-math"="true" "no-nans-fp-math"="true" "no-signed-zeros-fp-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="cortex-m55" "target-features"="+armv8.1-m.main,+dsp,+fp-armv8d16,+fp-armv8d16sp,+fp16,+fp64,+fullfp16,+hwdiv,+lob,+mve,+mve.fp,+ras,+thumb-mode,+vfp2,+vfp2sp,+vfp3d16,+vfp3d16sp,+vfp4d16,+vfp4d16sp,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-dotprod,-fp16fml,-hwdiv-arm,-i8mm,-sb,-sha2" } + attributes #1 = { nofree nosync nounwind readnone speculatable willreturn } + attributes #2 = { nofree nosync nounwind readnone willreturn } + attributes #3 = { argmemonly nofree nosync nounwind readonly willreturn } + attributes #4 = { noduplicate nofree nosync nounwind willreturn } + attributes #5 = { nounwind readnone } + + !llvm.dbg.cu = !{!0} + !llvm.module.flags = !{!3, !4, !5, !6, !7, !8, !9, !10, !11} + !llvm.ident = !{!12} + + !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "Component: ARM Compiler 6.17.0.0 (permissive) Tool: armclang [00000000]", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None) + !1 = !DIFile(filename: "skip-vpt-debug.c", directory: "/home/vicspe01") + !2 = !{} + !3 = !{i32 7, !"Dwarf Version", i32 4} + !4 = !{i32 2, !"Debug Info Version", i32 3} + !5 = !{i32 1, !"wchar_size", i32 4} + !6 = !{i32 1, !"static_rwdata", i32 1} + !7 = !{i32 1, !"enumsize_buildattr", i32 2} + !8 = !{i32 1, !"armlib_unavailable", i32 0} + !9 = !{i32 1, !"branch-target-enforcement", i32 0} + !10 = !{i32 1, !"sign-return-address", i32 0} + !11 = !{i32 1, !"sign-return-address-all", i32 0} + !12 = !{!"Component: ARM Compiler 6.17.0.0 (permissive) Tool: armclang [00000000]"} + !13 = distinct !DISubprogram(name: "arm_max_no_idx_f32", scope: !1, file: !1, line: 5, type: !14, scopeLine: 6, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !23) + !14 = !DISubroutineType(types: !15) + !15 = !{null, !16, !20, !22} + !16 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !17, size: 32) + !17 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !18) + !18 = !DIDerivedType(tag: DW_TAG_typedef, name: "float32_t", file: !1, line: 1, baseType: !19) + !19 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float) + !20 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint32_t", file: !1, line: 2, baseType: !21) + !21 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned) + !22 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !18, size: 32) + !23 = !{!24, !25, !26, !27, !28} + !24 = !DILocalVariable(name: "pSrc", arg: 1, scope: !13, file: !1, line: 5, type: !16) + !25 = !DILocalVariable(name: "blockSize", arg: 2, scope: !13, file: !1, line: 5, type: !20) + !26 = !DILocalVariable(name: "pResult", arg: 3, scope: !13, file: !1, line: 6, type: !22) + !27 = !DILocalVariable(name: "maxValue", scope: !13, file: !1, line: 7, type: !18) + !28 = !DILocalVariable(name: "newVal", scope: !13, file: !1, line: 8, type: !18) + !29 = !DILocation(line: 0, scope: !13) + !30 = !DILocation(line: 10, column: 20, scope: !13) + !31 = !DILocation(line: 10, column: 3, scope: !13) + !32 = !DILocation(line: 11, column: 14, scope: !33) + !33 = distinct !DILexicalBlock(scope: !13, file: !1, line: 10, column: 26) + !34 = !{!35, !35, i64 0} + !35 = !{!"float", !36, i64 0} + !36 = !{!"omnipotent char", !37, i64 0} + !37 = !{!"Simple C/C++ TBAA"} + !38 = !DILocation(line: 12, column: 18, scope: !39) + !39 = distinct !DILexicalBlock(scope: !33, file: !1, line: 12, column: 9) + !40 = !DILocation(line: 12, column: 9, scope: !33) + !41 = distinct !{!41, !31, !42, !43, !44} + !42 = !DILocation(line: 15, column: 3, scope: !13) + !43 = !{!"llvm.loop.mustprogress"} + !44 = !{!"llvm.loop.isvectorized", i32 1} + !45 = !DILocation(line: 16, column: 12, scope: !13) + !46 = !DILocation(line: 17, column: 1, scope: !13) + +... +--- +name: arm_max_no_idx_f32 +alignment: 4 +exposesReturnsTwice: false +legalized: false +regBankSelected: false +selected: false +failedISel: false +tracksRegLiveness: true +hasWinCFI: false +registers: [] +liveins: + - { reg: '$r0', virtual-reg: '' } + - { reg: '$r1', virtual-reg: '' } + - { reg: '$r2', virtual-reg: '' } +frameInfo: + isFrameAddressTaken: false + isReturnAddressTaken: false + hasStackMap: false + hasPatchPoint: false + stackSize: 8 + offsetAdjustment: 0 + maxAlignment: 4 + adjustsStack: false + hasCalls: false + stackProtector: '' + maxCallFrameSize: 0 + cvBytesOfCalleeSavedRegisters: 0 + hasOpaqueSPAdjustment: false + hasVAStart: false + hasMustTailInVarArgFunc: false + localFrameSize: 0 + savePoint: '' + restorePoint: '' +fixedStack: [] +stack: + - { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4, + stack-id: default, callee-saved-register: '$lr', callee-saved-restored: false, + debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } + - { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4, + stack-id: default, callee-saved-register: '$r7', callee-saved-restored: true, + debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } +callSites: [] +debugValueSubstitutions: [] +constants: + - id: 0 + value: float 0x3810000000000000 + alignment: 4 + isTargetSpecific: false +machineFunctionInfo: {} +body: | + ; CHECK-LABEL: name: arm_max_no_idx_f32 + ; CHECK: bb.0.entry: + ; CHECK: successors: %bb.4(0x30000000), %bb.1(0x50000000) + ; CHECK: liveins: $lr, $r0, $r1, $r2, $r7 + ; CHECK: DBG_VALUE $r0, $noreg, !24, !DIExpression(), debug-location !29 + ; CHECK: DBG_VALUE $r1, $noreg, !25, !DIExpression(), debug-location !29 + ; CHECK: DBG_VALUE $r1, $noreg, !25, !DIExpression(), debug-location !29 + ; CHECK: DBG_VALUE $r2, $noreg, !26, !DIExpression(), debug-location !29 + ; CHECK: DBG_VALUE $r2, $noreg, !26, !DIExpression(), debug-location !29 + ; CHECK: frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r7, killed $lr, implicit-def $sp, implicit $sp + ; CHECK: frame-setup CFI_INSTRUCTION def_cfa_offset 8 + ; CHECK: frame-setup CFI_INSTRUCTION offset $lr, -4 + ; CHECK: frame-setup CFI_INSTRUCTION offset $r7, -8 + ; CHECK: DBG_VALUE float 0x3810000000000000, $noreg, !27, !DIExpression(), debug-location !29 + ; CHECK: DBG_VALUE $r0, $noreg, !24, !DIExpression(), debug-location !29 + ; CHECK: tCBZ renamable $r1, %bb.4, debug-location !31 + ; CHECK: bb.1.vector.ph: + ; CHECK: successors: %bb.2(0x80000000) + ; CHECK: liveins: $r0, $r1, $r2 + ; CHECK: DBG_VALUE float 0x3810000000000000, $noreg, !27, !DIExpression(), debug-location !29 + ; CHECK: DBG_VALUE $r2, $noreg, !26, !DIExpression(), debug-location !29 + ; CHECK: DBG_VALUE $r1, $noreg, !25, !DIExpression(), debug-location !29 + ; CHECK: DBG_VALUE $r0, $noreg, !24, !DIExpression(), debug-location !29 + ; CHECK: renamable $q0 = MVE_VMOVimmi32 1152, 0, $noreg, undef renamable $q0 + ; CHECK: $lr = MVE_DLSTP_32 killed renamable $r1, debug-location !31 + ; CHECK: bb.2.vector.body (align 4): + ; CHECK: successors: %bb.2(0x7c000000), %bb.3(0x04000000) + ; CHECK: liveins: $lr, $q0, $r0, $r2 + ; CHECK: DBG_VALUE float 0x3810000000000000, $noreg, !27, !DIExpression(), debug-location !29 + ; CHECK: DBG_VALUE $r2, $noreg, !26, !DIExpression(), debug-location !29 + ; CHECK: renamable $r0, renamable $q1 = MVE_VLDRWU32_post killed renamable $r0, 16, 0, $noreg, debug-location !32 :: (load 16 from %ir.lsr.iv12, align 4, !tbaa !34) + ; CHECK: DBG_VALUE $r0, $noreg, !24, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !29 + ; CHECK: MVE_VPTv4f32 8, renamable $q1, renamable $q0, 12, implicit-def $vpr, debug-location !40 + ; CHECK: renamable $q0 = MVE_VORR killed renamable $q1, killed renamable $q1, 1, killed renamable $vpr, killed renamable $q0, debug-location !40 + ; CHECK: DBG_VALUE $r1, $noreg, !25, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !29 + ; CHECK: $lr = MVE_LETP killed renamable $lr, %bb.2 + ; CHECK: bb.3.middle.block: + ; CHECK: successors: %bb.5(0x80000000) + ; CHECK: liveins: $q0, $r2 + ; CHECK: DBG_VALUE float 0x3810000000000000, $noreg, !27, !DIExpression(), debug-location !29 + ; CHECK: DBG_VALUE $r2, $noreg, !26, !DIExpression(), debug-location !29 + ; CHECK: renamable $s4 = nnan ninf nsz VFP_VMAXNMS renamable $s2, renamable $s3, debug-location !31 + ; CHECK: renamable $s0 = nnan ninf nsz VFP_VMAXNMS killed renamable $s0, killed renamable $s1, implicit killed $q0, debug-location !31 + ; CHECK: renamable $s0 = nnan ninf nsz VFP_VMAXNMS killed renamable $s0, killed renamable $s4, debug-location !31 + ; CHECK: tB %bb.5, 14 /* CC::al */, $noreg + ; CHECK: bb.4: + ; CHECK: successors: %bb.5(0x80000000) + ; CHECK: liveins: $r2 + ; CHECK: DBG_VALUE float 0x3810000000000000, $noreg, !27, !DIExpression(), debug-location !29 + ; CHECK: DBG_VALUE $r2, $noreg, !26, !DIExpression(), debug-location !29 + ; CHECK: DBG_VALUE $r1, $noreg, !25, !DIExpression(), debug-location !29 + ; CHECK: DBG_VALUE $r0, $noreg, !24, !DIExpression(), debug-location !29 + ; CHECK: renamable $s0 = VLDRS %const.0, 0, 14 /* CC::al */, $noreg :: (load 4 from constant-pool) + ; CHECK: bb.5.while.end: + ; CHECK: liveins: $r2, $s0 + ; CHECK: DBG_VALUE float 0x3810000000000000, $noreg, !27, !DIExpression(), debug-location !29 + ; CHECK: DBG_VALUE $r2, $noreg, !26, !DIExpression(), debug-location !29 + ; CHECK: VSTRS killed renamable $s0, killed renamable $r2, 0, 14 /* CC::al */, $noreg, debug-location !45 :: (store 4 into %ir.pResult, !tbaa !34) + ; CHECK: frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc, debug-location !46 + ; CHECK: bb.6 (align 4): + ; CHECK: CONSTPOOL_ENTRY 0, %const.0, 4 + bb.0.entry: + successors: %bb.4(0x30000000), %bb.1(0x50000000) + liveins: $r0, $r1, $r2, $r7, $lr + + DBG_VALUE $r0, $noreg, !24, !DIExpression(), debug-location !29 + DBG_VALUE $r1, $noreg, !25, !DIExpression(), debug-location !29 + DBG_VALUE $r1, $noreg, !25, !DIExpression(), debug-location !29 + DBG_VALUE $r2, $noreg, !26, !DIExpression(), debug-location !29 + DBG_VALUE $r2, $noreg, !26, !DIExpression(), debug-location !29 + frame-setup tPUSH 14 /* CC::al */, $noreg, killed $r7, killed $lr, implicit-def $sp, implicit $sp + frame-setup CFI_INSTRUCTION def_cfa_offset 8 + frame-setup CFI_INSTRUCTION offset $lr, -4 + frame-setup CFI_INSTRUCTION offset $r7, -8 + DBG_VALUE float 0x3810000000000000, $noreg, !27, !DIExpression(), debug-location !29 + DBG_VALUE $r0, $noreg, !24, !DIExpression(), debug-location !29 + tCBZ renamable $r1, %bb.4, debug-location !31 + + bb.1.vector.ph: + successors: %bb.2(0x80000000) + liveins: $r0, $r1, $r2 + + DBG_VALUE float 0x3810000000000000, $noreg, !27, !DIExpression(), debug-location !29 + DBG_VALUE $r2, $noreg, !26, !DIExpression(), debug-location !29 + DBG_VALUE $r1, $noreg, !25, !DIExpression(), debug-location !29 + DBG_VALUE $r0, $noreg, !24, !DIExpression(), debug-location !29 + renamable $r3, dead $cpsr = tADDi3 renamable $r1, 3, 14 /* CC::al */, $noreg, debug-location !31 + renamable $r3 = t2BICri killed renamable $r3, 3, 14 /* CC::al */, $noreg, $noreg, debug-location !31 + renamable $r12 = t2SUBri killed renamable $r3, 4, 14 /* CC::al */, $noreg, $noreg, debug-location !31 + renamable $r3, dead $cpsr = tMOVi8 1, 14 /* CC::al */, $noreg + renamable $r3 = nuw nsw t2ADDrs killed renamable $r3, killed renamable $r12, 19, 14 /* CC::al */, $noreg, $noreg, debug-location !31 + renamable $q0 = MVE_VMOVimmi32 1152, 0, $noreg, undef renamable $q0 + renamable $lr = t2DoLoopStartTP killed renamable $r3, renamable $r1, debug-location !31 + + bb.2.vector.body (align 4): + successors: %bb.2(0x7c000000), %bb.3(0x04000000) + liveins: $lr, $q0, $r0, $r1, $r2 + + DBG_VALUE float 0x3810000000000000, $noreg, !27, !DIExpression(), debug-location !29 + DBG_VALUE $r2, $noreg, !26, !DIExpression(), debug-location !29 + renamable $vpr = MVE_VCTP32 renamable $r1, 0, $noreg + MVE_VPST 2, implicit $vpr, debug-location !32 + renamable $r0, renamable $q1 = MVE_VLDRWU32_post killed renamable $r0, 16, 1, renamable $vpr, debug-location !32 :: (load 16 from %ir.lsr.iv12, align 4, !tbaa !34) + DBG_VALUE $r0, $noreg, !24, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !29 + renamable $vpr = MVE_VCMPf32 renamable $q1, renamable $q0, 12, 1, killed renamable $vpr, debug-location !40 + renamable $q0 = MVE_VORR killed renamable $q1, renamable $q1, 1, killed renamable $vpr, killed renamable $q0, debug-location !40 + renamable $r1, dead $cpsr = tSUBi8 killed renamable $r1, 4, 14 /* CC::al */, $noreg + DBG_VALUE $r1, $noreg, !25, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !29 + renamable $lr = t2LoopEndDec killed renamable $lr, %bb.2, implicit-def dead $cpsr + tB %bb.3, 14 /* CC::al */, $noreg + + bb.3.middle.block: + successors: %bb.5(0x80000000) + liveins: $q0, $r2 + + DBG_VALUE float 0x3810000000000000, $noreg, !27, !DIExpression(), debug-location !29 + DBG_VALUE $r2, $noreg, !26, !DIExpression(), debug-location !29 + renamable $s4 = nnan ninf nsz VFP_VMAXNMS renamable $s2, renamable $s3, debug-location !31 + renamable $s0 = nnan ninf nsz VFP_VMAXNMS killed renamable $s0, killed renamable $s1, implicit $q0, debug-location !31 + renamable $s0 = nnan ninf nsz VFP_VMAXNMS killed renamable $s0, killed renamable $s4, debug-location !31 + tB %bb.5, 14 /* CC::al */, $noreg + + bb.4: + successors: %bb.5(0x80000000) + liveins: $r2 + + DBG_VALUE float 0x3810000000000000, $noreg, !27, !DIExpression(), debug-location !29 + DBG_VALUE $r2, $noreg, !26, !DIExpression(), debug-location !29 + DBG_VALUE $r1, $noreg, !25, !DIExpression(), debug-location !29 + DBG_VALUE $r0, $noreg, !24, !DIExpression(), debug-location !29 + renamable $s0 = VLDRS %const.0, 0, 14 /* CC::al */, $noreg :: (load 4 from constant-pool) + + bb.5.while.end: + liveins: $r2, $s0 + + DBG_VALUE float 0x3810000000000000, $noreg, !27, !DIExpression(), debug-location !29 + DBG_VALUE $r2, $noreg, !26, !DIExpression(), debug-location !29 + VSTRS killed renamable $s0, killed renamable $r2, 0, 14 /* CC::al */, $noreg, debug-location !45 :: (store 4 into %ir.pResult, !tbaa !34) + frame-destroy tPOP_RET 14 /* CC::al */, $noreg, def $r7, def $pc, debug-location !46 + + bb.6 (align 4): + CONSTPOOL_ENTRY 0, %const.0, 4 + +...