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67886a34d2
Summary: Most DIExpressions are empty or very simple. When they are complex, they tend to be unique, so checking them inline is reasonable. This also avoids the need for CodeGen passes to append to the llvm.dbg.mir named md node. See also PR22780, for making DIExpression not be an MDNode. Reviewers: aprantl, dexonsmith, dblaikie Subscribers: qcolombet, javed.absar, eraman, hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D37075 llvm-svn: 311594
60 lines
2.9 KiB
LLVM
60 lines
2.9 KiB
LLVM
; RUN: opt -sroa -S -o - %s | FileCheck %s
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; REQUIRES: object-emission
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target datalayout = "e-m:o-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
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target triple = "thumbv7-apple-unknown-macho"
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; generated from (-triple thumbv7-apple-unknown-macho):
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; void f(_Complex double c) { c = 0; }
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; Function Attrs: nounwind
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define arm_aapcscc void @f([2 x i64] %c.coerce) #0 !dbg !4 {
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entry:
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%c = alloca { double, double }, align 8
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%0 = bitcast { double, double }* %c to [2 x i64]*
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store [2 x i64] %c.coerce, [2 x i64]* %0, align 8
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call void @llvm.dbg.declare(metadata { double, double }* %c, metadata !14, metadata !15), !dbg !16
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%c.realp = getelementptr inbounds { double, double }, { double, double }* %c, i32 0, i32 0, !dbg !17
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%c.imagp = getelementptr inbounds { double, double }, { double, double }* %c, i32 0, i32 1, !dbg !17
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store double 0.000000e+00, double* %c.realp, align 8, !dbg !17
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; SROA will split the complex double into two i64 values, because there is
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; no native double data type available.
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; Test that debug info for both values survives:
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; CHECK: call void @llvm.dbg.value(metadata i64 0,
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; CHECK-SAME: metadata ![[C:[^,]*]],
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; CHECK-SAME: metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64))
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store double 0.000000e+00, double* %c.imagp, align 8, !dbg !17
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; CHECK: call void @llvm.dbg.value(metadata i64 0,
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; CHECK-SAME: metadata ![[C]],
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; CHECK-SAME: metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64))
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ret void, !dbg !18
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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attributes #0 = { nounwind }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!9, !10, !11, !12}
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!llvm.ident = !{!13}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 (trunk 259998) (llvm/trunk 259999)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "<stdin>", directory: "/")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "f", scope: !5, file: !5, line: 1, type: !6, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
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!5 = !DIFile(filename: "test.c", directory: "/")
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!6 = !DISubroutineType(types: !7)
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!7 = !{null, !8}
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!8 = !DIBasicType(name: "complex", size: 128, align: 64, encoding: DW_ATE_complex_float)
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!9 = !{i32 2, !"Dwarf Version", i32 2}
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!10 = !{i32 2, !"Debug Info Version", i32 3}
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!11 = !{i32 1, !"wchar_size", i32 4}
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!12 = !{i32 1, !"min_enum_size", i32 4}
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!13 = !{!"clang version 3.9.0 (trunk 259998) (llvm/trunk 259999)"}
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!14 = !DILocalVariable(name: "c", arg: 1, scope: !4, file: !5, line: 1, type: !8)
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!15 = !DIExpression()
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!16 = !DILocation(line: 1, column: 24, scope: !4)
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!17 = !DILocation(line: 1, column: 31, scope: !4)
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!18 = !DILocation(line: 1, column: 36, scope: !4)
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