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a9fbb2813b
This patch reverses the edge from DIGlobalVariable to GlobalVariable. This will allow us to more easily preserve debug info metadata when manipulating global variables. Fixes PR30362. A program for upgrading test cases is attached to that bug. Differential Revision: http://reviews.llvm.org/D20147 llvm-svn: 281284
81 lines
3.4 KiB
LLVM
81 lines
3.4 KiB
LLVM
; RUN: llc -filetype=asm -asm-verbose=0 < %s | FileCheck %s
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; "1" from line 09 in the snippet below shouldn't be marked with location of "1"
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; from line 04. Instead it will have location inside main() (real location is
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; just erased, so it won't be perfectly accurate).
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; options: -g -O3
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; 01 volatile int x;
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; 02 int y;
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; 03 static __attribute__((always_inline)) int f1() {
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; 04 if (x * 3 < 14) return 1;
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; 05 return 2;
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; 06 }
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; 07 int main() {
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; 08 x = f1();
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; 09 x = x ? 1 : 2;
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; 10 }
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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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@x = common global i32 0, align 4, !dbg !10
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@y = common global i32 0, align 4, !dbg !12
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define i32 @main() !dbg !4 {
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; CHECK: .loc 1 {{[89]}}
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; CHECK-NOT: .loc
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; CHECK: movl $1
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entry:
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%0 = load volatile i32, i32* @x, align 4, !dbg !16, !tbaa !19
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%mul.i = mul nsw i32 %0, 3, !dbg !23
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%cmp.i = icmp slt i32 %mul.i, 14, !dbg !24
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%..i = select i1 %cmp.i, i32 1, i32 2, !dbg !25
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store volatile i32 %..i, i32* @x, align 4, !dbg !27, !tbaa !19
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%1 = load volatile i32, i32* @x, align 4, !dbg !28, !tbaa !19
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%tobool = icmp ne i32 %1, 0, !dbg !28
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br i1 %tobool, label %select.end, label %select.mid
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select.mid: ; preds = %entry
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br label %select.end
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select.end: ; preds = %entry, %select.mid
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%cond = phi i32 [ 1, %entry ], [ 2, %select.mid ]
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store volatile i32 %cond, i32* @x, align 4, !dbg !29, !tbaa !19
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ret i32 0, !dbg !30
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!13, !14}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !9, imports: !2)
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!1 = !DIFile(filename: "inline-break.c", directory: "/build/dir")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 7, type: !5, isLocal: false, isDefinition: true, scopeLine: 7, isOptimized: true, unit: !0, variables: !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 = distinct !DISubprogram(name: "f1", scope: !1, file: !1, line: 3, type: !5, isLocal: true, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !0, variables: !2)
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!9 = !{!10, !12}
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!10 = !DIGlobalVariable(name: "x", scope: !0, file: !1, line: 1, type: !11, isLocal: false, isDefinition: true)
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!11 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !7)
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!12 = !DIGlobalVariable(name: "y", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true)
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!13 = !{i32 2, !"Dwarf Version", i32 4}
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!14 = !{i32 2, !"Debug Info Version", i32 3}
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!16 = !DILocation(line: 4, column: 9, scope: !17, inlinedAt: !18)
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!17 = distinct !DILexicalBlock(scope: !8, file: !1, line: 4, column: 9)
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!18 = distinct !DILocation(line: 8, column: 9, scope: !4)
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!19 = !{!20, !20, i64 0}
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!20 = !{!"int", !21, i64 0}
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!21 = !{!"omnipotent char", !22, i64 0}
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!22 = !{!"Simple C/C++ TBAA"}
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!23 = !DILocation(line: 4, column: 11, scope: !17, inlinedAt: !18)
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!24 = !DILocation(line: 4, column: 15, scope: !17, inlinedAt: !18)
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!25 = !DILocation(line: 4, column: 21, scope: !26, inlinedAt: !18)
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!26 = !DILexicalBlockFile(scope: !17, file: !1, discriminator: 1)
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!27 = !DILocation(line: 8, column: 7, scope: !4)
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!28 = !DILocation(line: 9, column: 9, scope: !4)
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!29 = !DILocation(line: 9, column: 7, scope: !4)
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!30 = !DILocation(line: 10, column: 1, scope: !4)
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