05782218ab
This change simplifies code that has to deal with DIGlobalVariableExpression and mirrors how we treat DIExpressions in debug info intrinsics. Before this change there were two ways of representing empty expressions on globals, a nullptr and an empty !DIExpression(). If someone needs to upgrade out-of-tree testcases: perl -pi -e 's/(!DIGlobalVariableExpression\(var: ![0-9]*)\)/\1, expr: !DIExpression())/g' <MYTEST.ll> will catch 95%. llvm-svn: 312144
77 lines
3.3 KiB
LLVM
77 lines
3.3 KiB
LLVM
; RUN: llc -enable-machine-outliner -mtriple=x86_64-apple-darwin < %s | FileCheck %s
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@x = global i32 0, align 4, !dbg !0
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define i32 @main() #0 !dbg !11 {
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; CHECK-LABEL: _main:
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%1 = alloca i32, align 4
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%2 = alloca i32, align 4
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%3 = alloca i32, align 4
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%4 = alloca i32, align 4
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%5 = alloca i32, align 4
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; There is a debug value in the middle of this section, make sure debug values are ignored.
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; CHECK: callq l_OUTLINED_FUNCTION_0
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store i32 1, i32* %2, align 4
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store i32 2, i32* %3, align 4
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store i32 3, i32* %4, align 4
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call void @llvm.dbg.value(metadata i32 10, i64 0, metadata !15, metadata !16), !dbg !17
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store i32 4, i32* %5, align 4
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store i32 0, i32* @x, align 4, !dbg !24
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call void asm sideeffect "", "~{memory},~{dirflag},~{fpsr},~{flags}"()
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; This is the same sequence of instructions without a debug value. It should be outlined
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; in the same way.
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; CHECK: callq l_OUTLINED_FUNCTION_0
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store i32 1, i32* %2, align 4
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store i32 2, i32* %3, align 4
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store i32 3, i32* %4, align 4
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store i32 4, i32* %5, align 4
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store i32 1, i32* @x, align 4, !dbg !14
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ret i32 0, !dbg !25
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}
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; CHECK-LABEL: l_OUTLINED_FUNCTION_0:
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; CHECK-NOT: .loc {{[0-9]+}} {{[0-9]+}} {{[0-9]+}} {{^(is_stmt)}}
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; CHECK-NOT: ##DEBUG_VALUE: main:{{[a-z]}} <- {{[0-9]+}}
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; CHECK: movl $1, -{{[0-9]+}}(%rbp)
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; CHECK-NEXT: movl $2, -{{[0-9]+}}(%rbp)
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; CHECK-NEXT: movl $3, -{{[0-9]+}}(%rbp)
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; CHECK-NEXT: movl $4, -{{[0-9]+}}(%rbp)
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; CHECK-NEXT: retq
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
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attributes #0 = { noredzone nounwind ssp uwtable "no-frame-pointer-elim"="true" }
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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: "x", scope: !2, file: !3, line: 2, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 5.0.0", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
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!3 = !DIFile(filename: "debug-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, !"PIC Level", i32 2}
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!10 = !{!"clang version 5.0.0"}
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!11 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 4, type: !12, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: false, unit: !2, variables: !4)
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!12 = !DISubroutineType(types: !13)
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!13 = !{!6}
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!14 = !DILocation(line: 7, column: 4, scope: !11)
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!15 = !DILocalVariable(name: "a", scope: !11, file: !3, line: 5, type: !6)
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!16 = !DIExpression()
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!17 = !DILocation(line: 5, column: 6, scope: !11)
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!18 = !DILocalVariable(name: "b", scope: !11, file: !3, line: 5, type: !6)
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!19 = !DILocation(line: 5, column: 9, scope: !11)
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!20 = !DILocalVariable(name: "c", scope: !11, file: !3, line: 5, type: !6)
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!21 = !DILocation(line: 5, column: 12, scope: !11)
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!22 = !DILocalVariable(name: "d", scope: !11, file: !3, line: 5, type: !6)
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!23 = !DILocation(line: 5, column: 15, scope: !11)
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!24 = !DILocation(line: 14, column: 4, scope: !11)
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!25 = !DILocation(line: 21, column: 2, scope: !11)
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