72 lines
2.7 KiB
LLVM
72 lines
2.7 KiB
LLVM
; RUN: llc -O2 %s -o %t -filetype=obj
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; RUN: llvm-dwarfdump -debug-info %t | FileCheck %s
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; Check that Machine CSE correctly handles during the transformation, the
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; debug location information for variables.
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; Generated with clang -c -g -O2
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; typedef float __attribute__((__vector_size__(16))) f4;
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; f4 get();
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; int main() {
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; float MyVar = get()[0];
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; if (MyVar)
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; return 1;
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; }
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; ModuleID = 'test.cpp'
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source_filename = "test.cpp"
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-linux-gnu"
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define dso_local i32 @main() !dbg !7 {
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entry:
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%call = tail call <4 x float> @_Z3getv(), !dbg !14
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%vecext = extractelement <4 x float> %call, i32 0, !dbg !14
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call void @llvm.dbg.value(metadata float %vecext, metadata !12, metadata !DIExpression()), !dbg !15
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%tobool = fcmp une float %vecext, 0.000000e+00, !dbg !16
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%. = zext i1 %tobool to i32, !dbg !18
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ret i32 %., !dbg !19
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}
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declare dso_local <4 x float> @_Z3getv()
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declare void @llvm.dbg.value(metadata, metadata, metadata) #2
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 8.0.0 (trunk 339665)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "test.cpp", directory: ".")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang version 8.0.0 (trunk 339665)"}
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!7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !{!12}
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!12 = !DILocalVariable(name: "MyVar", scope: !7, file: !1, line: 4, type: !13)
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!13 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
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!14 = !DILocation(line: 4, column: 18, scope: !7)
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!15 = !DILocation(line: 4, column: 9, scope: !7)
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!16 = !DILocation(line: 5, column: 7, scope: !17)
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!17 = distinct !DILexicalBlock(scope: !7, file: !1, line: 5, column: 7)
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!18 = !DILocation(line: 6, column: 5, scope: !17)
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!19 = !DILocation(line: 7, column: 1, scope: !7)
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; Look at the debug location information for variable 'MyVar'.
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; Verify that we see a sequence of DI entries, that looks like:
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; DW_TAG_variable
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; DW_AT_location (0x00000000
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; [0x0000000000000009, 0x0000000000000012): DW_OP_reg17 XMM0)
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; DW_AT_name ("MyVar")
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; CHECK-LABEL: DW_TAG_variable
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; CHECK-NEXT: DW_AT_location{{.*}}
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; CHECK-NEXT: {{.*}}DW_OP_reg17 XMM0
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; CHECK-NEXT: DW_AT_name{{.*}}("MyVar")
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