diff --git a/llvm/test/CodeGen/X86/StackColoring-dbg-invariance.mir b/llvm/test/CodeGen/X86/StackColoring-dbg-invariance.mir new file mode 100644 --- /dev/null +++ b/llvm/test/CodeGen/X86/StackColoring-dbg-invariance.mir @@ -0,0 +1,117 @@ +# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py +# RUN: llc -mcpu=corei7 -no-stack-coloring=false -run-pass=stack-coloring -o - %s | FileCheck %s + +# Difference between test_1 and test_2 is that there is a DBG_VALUE in test_1. +# If transformation is debug invariant the resulting LEA instruction should be +# the same (i.e. we should reuse the same stack slot). + +--- | + ; ModuleID = '' + source_filename = "StackColoring-dbg-invariance.ll" + target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" + target triple = "x86_64-apple-macosx10.8.0" + + ; Function Attrs: argmemonly nofree nosync nounwind willreturn + declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture) #0 + + ; Function Attrs: argmemonly nofree nosync nounwind willreturn + declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture) #0 + + define i32 @test_1(i32 %in) #1 !dbg !5 { + entry: + %a1 = alloca [14 x i8*], align 8 + %a4 = alloca [11 x i8*], align 8 + call void @llvm.dbg.value(metadata [11 x i8*]* %a4, metadata !9, metadata !DIExpression()), !dbg !11 + ret i32 0 + } + + define i32 @test_2(i32 %in) #1 !dbg !12 { + entry: + %a1 = alloca [14 x i8*], align 8 + %a4 = alloca [11 x i8*], align 8 + ret i32 0 + } + + ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn + declare void @llvm.dbg.value(metadata, metadata, metadata) #2 + + attributes #0 = { argmemonly nofree nosync nounwind willreturn "target-cpu"="corei7" } + attributes #1 = { "target-cpu"="corei7" } + + !llvm.dbg.cu = !{!0} + !llvm.debugify = !{!2, !3} + !llvm.module.flags = !{!4} + + !0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug) + !1 = !DIFile(filename: "StackColoring-dbg-invariance.ll", directory: "/") + !2 = !{i32 27} + !3 = !{i32 18} + !4 = !{i32 2, !"Debug Info Version", i32 3} + !5 = distinct !DISubprogram(name: "test_1", linkageName: "test_1", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8) + !6 = !DISubroutineType(types: !7) + !7 = !{} + !8 = !{!9} + !9 = !DILocalVariable(name: "4", scope: !5, file: !1, line: 4, type: !10) + !10 = !DIBasicType(name: "ty64", size: 64, encoding: DW_ATE_unsigned) + !11 = !DILocation(line: 4, column: 1, scope: !5) + !12 = distinct !DISubprogram(name: "test_2", linkageName: "test_2", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8) + +... +--- +name: test_1 +alignment: 16 +tracksRegLiveness: true +stack: + - { id: 0, name: a1, type: default, offset: 0, size: 112, alignment: 8, + stack-id: default, callee-saved-register: '', callee-saved-restored: true, + debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } + - { id: 3, name: a4, type: default, offset: 0, size: 88, alignment: 8, + stack-id: default, callee-saved-register: '', callee-saved-restored: true, + debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } +body: | + bb.0.entry: + liveins: $edi + + ; CHECK-LABEL: name: test_1 + ; CHECK: liveins: $edi + ; CHECK: DBG_VALUE %stack.1.a4, $noreg, !9, !DIExpression(), debug-location !11 + ; CHECK: [[LEA64r:%[0-9]+]]:gr64 = LEA64r %stack.0.a1, 1, $noreg, 0, $noreg + ; CHECK: [[LEA64r1:%[0-9]+]]:gr64 = LEA64r %stack.1.a4, 1, $noreg, 0, $noreg + ; CHECK: RET 0 + DBG_VALUE %stack.3.a4, $noreg, !9, !DIExpression(), debug-location !11 + LIFETIME_START %stack.3.a4 + LIFETIME_START %stack.0.a1 + %0:gr64 = LEA64r %stack.0.a1, 1, $noreg, 0, $noreg + LIFETIME_END %stack.0.a1 + %1:gr64 = LEA64r %stack.3.a4, 1, $noreg, 0, $noreg + LIFETIME_END %stack.3.a4 + RET 0 +... +--- +name: test_2 +alignment: 16 +tracksRegLiveness: true +stack: + - { id: 0, name: a1, type: default, offset: 0, size: 112, alignment: 8, + stack-id: default, callee-saved-register: '', callee-saved-restored: true, + debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } + - { id: 3, name: a4, type: default, offset: 0, size: 88, alignment: 8, + stack-id: default, callee-saved-register: '', callee-saved-restored: true, + debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } +body: | + bb.0.entry: + liveins: $edi + + ; CHECK-LABEL: name: test_2 + ; CHECK: liveins: $edi + ; CHECK: [[LEA64r:%[0-9]+]]:gr64 = LEA64r %stack.0.a1, 1, $noreg, 0, $noreg + ; CHECK: [[LEA64r1:%[0-9]+]]:gr64 = LEA64r %stack.0.a1, 1, $noreg, 0, $noreg + ; CHECK: RET 0 + LIFETIME_START %stack.3.a4 + LIFETIME_START %stack.0.a1 + %0:gr64 = LEA64r %stack.0.a1, 1, $noreg, 0, $noreg + LIFETIME_END %stack.0.a1 + %1:gr64 = LEA64r %stack.3.a4, 1, $noreg, 0, $noreg + LIFETIME_END %stack.3.a4 + RET 0 +...