87 lines
3.2 KiB
LLVM
87 lines
3.2 KiB
LLVM
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; RUN: opt -deadargelim -S < %s | FileCheck %s
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;test.c
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;int s;
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;
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;void f2(int k) __attribute__((noinline)) {
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; s++;
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; k = s;
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;}
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;
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;void f() __attribute__((noinline)) {
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; f2(4);
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;}
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;
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;int main()
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;{
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; f();
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; return 0;
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;}
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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@s = common dso_local local_unnamed_addr global i32 0, align 4, !dbg !0
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; Function Attrs: noinline nounwind uwtable
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define dso_local void @f2(i32 %k) local_unnamed_addr !dbg !11 {
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entry:
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; CHECK: call void @llvm.dbg.value(metadata i32 undef, metadata !15, metadata !DIExpression()), !dbg !16
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call void @llvm.dbg.value(metadata i32 %k, metadata !15, metadata !DIExpression()), !dbg !16
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%0 = load i32, i32* @s, align 4, !dbg !17
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%inc = add nsw i32 %0, 1, !dbg !17
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store i32 %inc, i32* @s, align 4, !dbg !17
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call void @llvm.dbg.value(metadata i32* @s, metadata !15, metadata !DIExpression(DW_OP_deref)), !dbg !16
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ret void, !dbg !18
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}
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; Function Attrs: noinline nounwind uwtable
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define dso_local void @f() local_unnamed_addr !dbg !19 {
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entry:
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; CHECK: tail call void @f2(i32 undef), !dbg !22
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tail call void @f2(i32 4), !dbg !22
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ret void, !dbg !23
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}
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; Function Attrs: nounwind uwtable
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define dso_local i32 @main() local_unnamed_addr !dbg !24 {
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entry:
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tail call void @f(), !dbg !27
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ret i32 0, !dbg !28
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!7, !8, !9}
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!llvm.ident = !{!10}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "s", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
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!3 = !DIFile(filename: "test.c", directory: "/dir")
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!4 = !{}
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!5 = !{!0}
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!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!7 = !{i32 2, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{i32 1, !"wchar_size", i32 4}
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!10 = !{!"clang version 7.0.0"}
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!11 = distinct !DISubprogram(name: "f2", scope: !3, file: !3, line: 3, type: !12, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !14)
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!12 = !DISubroutineType(types: !13)
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!13 = !{null, !6}
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!14 = !{!15}
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!15 = !DILocalVariable(name: "k", arg: 1, scope: !11, file: !3, line: 3, type: !6)
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!16 = !DILocation(line: 3, column: 13, scope: !11)
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!17 = !DILocation(line: 4, column: 3, scope: !11)
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!18 = !DILocation(line: 6, column: 1, scope: !11)
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!19 = distinct !DISubprogram(name: "f", scope: !3, file: !3, line: 8, type: !20, isLocal: false, isDefinition: true, scopeLine: 8, isOptimized: true, unit: !2, retainedNodes: !4)
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!20 = !DISubroutineType(types: !21)
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!21 = !{null}
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!22 = !DILocation(line: 9, column: 2, scope: !19)
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!23 = !DILocation(line: 10, column: 1, scope: !19)
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!24 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 12, type: !25, isLocal: false, isDefinition: true, scopeLine: 12, isOptimized: true, unit: !2, retainedNodes: !4)
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!25 = !DISubroutineType(types: !26)
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!26 = !{!6}
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!27 = !DILocation(line: 13, column: 2, scope: !24)
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!28 = !DILocation(line: 14, column: 2, scope: !24)
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