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7d6813a6c8
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
85 lines
3.6 KiB
LLVM
85 lines
3.6 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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source_filename = "test/DebugInfo/X86/inlined-indirect-value.ll"
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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 !0
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@y = common global i32 0, align 4, !dbg !6
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define i32 @main() !dbg !12 {
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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 !15, !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 = %select.mid, %entry
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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 = !{!2}
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!llvm.module.flags = !{!10, !11}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = !DIGlobalVariable(name: "x", scope: !2, file: !3, line: 1, type: !9, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !4, globals: !5, imports: !4)
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!3 = !DIFile(filename: "inline-break.c", directory: "/build/dir")
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!4 = !{}
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!5 = !{!0, !6}
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!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
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!7 = !DIGlobalVariable(name: "y", scope: !2, file: !3, line: 2, type: !8, isLocal: false, isDefinition: true)
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!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !8)
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!10 = !{i32 2, !"Dwarf Version", i32 4}
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!11 = !{i32 2, !"Debug Info Version", i32 3}
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!12 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 7, type: !13, isLocal: false, isDefinition: true, scopeLine: 7, isOptimized: true, unit: !2, variables: !4)
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!13 = !DISubroutineType(types: !14)
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!14 = !{!8}
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!15 = !DILocation(line: 4, column: 9, scope: !16, inlinedAt: !18)
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!16 = distinct !DILexicalBlock(scope: !17, file: !3, line: 4, column: 9)
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!17 = distinct !DISubprogram(name: "f1", scope: !3, file: !3, line: 3, type: !13, isLocal: true, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !2, variables: !4)
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!18 = distinct !DILocation(line: 8, column: 9, scope: !12)
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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: !16, inlinedAt: !18)
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!24 = !DILocation(line: 4, column: 15, scope: !16, inlinedAt: !18)
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!25 = !DILocation(line: 4, column: 21, scope: !26, inlinedAt: !18)
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!26 = !DILexicalBlockFile(scope: !16, file: !3, discriminator: 1)
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!27 = !DILocation(line: 8, column: 7, scope: !12)
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!28 = !DILocation(line: 9, column: 9, scope: !12)
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!29 = !DILocation(line: 9, column: 7, scope: !12)
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!30 = !DILocation(line: 10, column: 1, scope: !12)
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