79 lines
2.8 KiB
LLVM
79 lines
2.8 KiB
LLVM
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; RUN: llc -filetype=asm -asm-verbose=0 < %s | FileCheck %s
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; int main()
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; {
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; int x = 0;
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; if (x > 0)
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; return x;
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; x = -1; // <== this line should have correct debug location
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; return -1;
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; }
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
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target triple = "armv7--linux-gnueabihf"
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; Function Attrs: nounwind
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define i32 @main() !dbg !4 {
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entry:
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%retval = alloca i32, align 4
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%x = alloca i32, align 4
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store i32 0, i32* %retval
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call void @llvm.dbg.declare(metadata i32* %x, metadata !10, metadata !11), !dbg !12
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store i32 0, i32* %x, align 4, !dbg !12
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%0 = load i32, i32* %x, align 4, !dbg !13
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%cmp = icmp sgt i32 %0, 0, !dbg !15
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br i1 %cmp, label %if.then, label %if.end, !dbg !16
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if.then: ; preds = %entry
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%1 = load i32, i32* %x, align 4, !dbg !17
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store i32 %1, i32* %retval, !dbg !18
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br label %return, !dbg !18
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if.end: ; preds = %entry
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; Materialize the constant.
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; CHECK: .loc 1 0
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; CHECK-NEXT: mvn r0, #0
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; The backend performs the store to %retval first, for some reason.
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; CHECK-NEXT: .loc 1 7 5
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; CHECK-NEXT: str r0, [sp, #4]
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store i32 -1, i32* %x, align 4, !dbg !19
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; CHECK-NEXT: .loc 1 6 7
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; CHECK-NEXT: str r0, [sp]
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store i32 -1, i32* %retval, !dbg !20
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br label %return, !dbg !20
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return: ; preds = %if.end, %if.then
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%2 = load i32, i32* %retval, !dbg !21
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ret i32 %2, !dbg !21
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!8, !9}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "", isOptimized: false, emissionKind: FullDebug)
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!1 = !DIFile(filename: "test.c", directory: "/home/user/clang/build")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 2, isOptimized: false, unit: !0, retainedNodes: !2)
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!5 = !DISubroutineType(types: !6)
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!6 = !{!7}
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!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!8 = !{i32 2, !"Dwarf Version", i32 4}
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!9 = !{i32 2, !"Debug Info Version", i32 3}
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!10 = !DILocalVariable(name: "x", scope: !4, file: !1, line: 3, type: !7)
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!11 = !DIExpression()
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!12 = !DILocation(line: 3, column: 9, scope: !4)
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!13 = !DILocation(line: 4, column: 9, scope: !14)
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!14 = distinct !DILexicalBlock(scope: !4, file: !1, line: 4, column: 9)
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!15 = !DILocation(line: 4, column: 11, scope: !14)
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!16 = !DILocation(line: 4, column: 9, scope: !4)
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!17 = !DILocation(line: 5, column: 13, scope: !14)
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!18 = !DILocation(line: 5, column: 9, scope: !14)
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!19 = !DILocation(line: 6, column: 7, scope: !4)
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!20 = !DILocation(line: 7, column: 5, scope: !4)
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!21 = !DILocation(line: 8, column: 1, scope: !4)
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