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42 lines
1.1 KiB
LLVM
42 lines
1.1 KiB
LLVM
; Test ensuring debug intrinsics do not affect generated function prologue.
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;
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; RUN: llc -O1 -mtriple=x86_64-unknown-unknown -o - %s | FileCheck %s
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define i64 @noDebug(i64 %a) {
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%call = call i64 @fn(i64 %a, i64 0)
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ret i64 %call
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}
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; CHECK-LABEL: noDebug
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; CHECK: popq %rcx
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; CHECK: ret
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define i64 @withDebug(i64 %a) !dbg !4 {
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%call = call i64 @fn(i64 %a, i64 0)
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tail call void @llvm.dbg.value(metadata i64 %call, i64 0, metadata !5, metadata !6), !dbg !7
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ret i64 %call
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}
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; CHECK-LABEL: withDebug
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; CHECK: popq %rcx
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; CHECK: ret
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declare i64 @fn(i64, i64)
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2,!3}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0")
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!1 = !DIFile(filename: "test.c", directory: "/")
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!2 = !{i32 2, !"Dwarf Version", i32 4}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = distinct !DISubprogram(name: "withDebug", unit: !0)
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!5 = !DILocalVariable(name: "w", scope: !4)
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!6 = !DIExpression()
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!7 = !DILocation(line: 210, column: 12, scope: !4)
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