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51 lines
1.9 KiB
51 lines
1.9 KiB
4 months ago
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# RUN: llc -O1 -filetype=asm -mtriple x86_64-unknown-linux-gnu -mcpu=x86-64 -o - %s -start-before=simple-register-coalescing -stop-after=simple-register-coalescing | FileCheck %s
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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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target triple = "x86_64-unknown-linux-gnu"
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define i32 @main() local_unnamed_addr !dbg !14 {
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entry:
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%shl = shl i32 undef, undef, !dbg !19
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tail call void @llvm.dbg.value(metadata i32 %shl, metadata !18, metadata !DIExpression()), !dbg !20
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ret i32 %shl, !dbg !21
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}
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!12, !13}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !2)
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!1 = !DIFile(filename: "bar.c", directory: "")
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!2 = !{}
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!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!12 = !{i32 2, !"Debug Info Version", i32 3}
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!13 = !{i32 1, !"wchar_size", i32 4}
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!14 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 12, type: !15, isLocal: false, isDefinition: true, scopeLine: 12, isOptimized: true, unit: !0, retainedNodes: !17)
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!15 = !DISubroutineType(types: !16)
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!16 = !{!7}
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!17 = !{!18}
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!18 = !DILocalVariable(name: "bazinga", scope: !14, file: !1, line: 13, type: !7)
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!19 = !DILocation(line: 14, column: 11, scope: !14)
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!20 = !DILocation(line: 13, column: 7, scope: !14)
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!21 = !DILocation(line: 16, column: 3, scope: !14)
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...
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---
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name: main
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alignment: 16
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registers:
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- { id: 0, class: gr32, preferred-register: '' }
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body: |
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bb.0.entry:
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%0 = MOV32r0 implicit-def dead $eflags, debug-location !19
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DBG_VALUE %0, _, !18, !DIExpression(), debug-location !20
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$eax = COPY killed %0, debug-location !21
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RET 0, killed $eax, debug-location !21
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...
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# CHECK: $eax = MOV32r0
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# CHECK-NEXT: DBG_VALUE $eax
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