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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
99 lines
4.7 KiB
LLVM
99 lines
4.7 KiB
LLVM
; RUN: opt %s -sroa -verify -S -o - | FileCheck %s
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;
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; Test that we can partial emit debug info for aggregates repeatedly
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; split up by SROA.
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;
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; // Compile with -O1
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; typedef struct {
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; int a;
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; int b;
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; } Inner;
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;
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; typedef struct {
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; Inner inner[2];
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; } Outer;
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;
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; int foo(Outer outer) {
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; Inner i1 = outer.inner[1];
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; return i1.a;
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; }
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;
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; Verify that SROA creates a variable piece when splitting i1.
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; CHECK: call void @llvm.dbg.value(metadata i64 %outer.coerce0, metadata ![[O:[0-9]+]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)),
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; CHECK: call void @llvm.dbg.value(metadata i64 %outer.coerce1, metadata ![[O]], metadata !DIExpression(DW_OP_LLVM_fragment, 64, 64)),
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; CHECK: call void @llvm.dbg.value({{.*}}, metadata ![[I1:[0-9]+]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)),
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; CHECK-DAG: ![[O]] = !DILocalVariable(name: "outer",{{.*}} line: 10
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; CHECK-DAG: ![[I1]] = !DILocalVariable(name: "i1",{{.*}} line: 11
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; ModuleID = 'sroasplit-2.c'
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.9.0"
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%struct.Outer = type { [2 x %struct.Inner] }
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%struct.Inner = type { i32, i32 }
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; Function Attrs: nounwind ssp uwtable
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define i32 @foo(i64 %outer.coerce0, i64 %outer.coerce1) #0 !dbg !4 {
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%outer = alloca %struct.Outer, align 8
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%i1 = alloca %struct.Inner, align 4
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%1 = bitcast %struct.Outer* %outer to { i64, i64 }*
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%2 = getelementptr { i64, i64 }, { i64, i64 }* %1, i32 0, i32 0
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store i64 %outer.coerce0, i64* %2
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%3 = getelementptr { i64, i64 }, { i64, i64 }* %1, i32 0, i32 1
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store i64 %outer.coerce1, i64* %3
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call void @llvm.dbg.declare(metadata %struct.Outer* %outer, metadata !24, metadata !2), !dbg !25
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call void @llvm.dbg.declare(metadata %struct.Inner* %i1, metadata !26, metadata !2), !dbg !27
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%4 = getelementptr inbounds %struct.Outer, %struct.Outer* %outer, i32 0, i32 0, !dbg !27
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%5 = getelementptr inbounds [2 x %struct.Inner], [2 x %struct.Inner]* %4, i32 0, i64 1, !dbg !27
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%6 = bitcast %struct.Inner* %i1 to i8*, !dbg !27
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%7 = bitcast %struct.Inner* %5 to i8*, !dbg !27
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %6, i8* %7, i64 8, i32 4, i1 false), !dbg !27
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%8 = getelementptr inbounds %struct.Inner, %struct.Inner* %i1, i32 0, i32 0, !dbg !28
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%9 = load i32, i32* %8, align 4, !dbg !28
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ret i32 %9, !dbg !28
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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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; Function Attrs: nounwind
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #2
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attributes #0 = { nounwind ssp uwtable "no-frame-pointer-elim"="true" }
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attributes #1 = { nounwind readnone }
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attributes #2 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!21, !22}
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!llvm.ident = !{!23}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !{}, retainedTypes: !{}, globals: !{}, imports: !{})
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!1 = !DIFile(filename: "sroasplit-2.c", directory: "")
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!2 = !DIExpression()
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!4 = distinct !DISubprogram(name: "foo", line: 10, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 10, file: !1, scope: !5, type: !6, variables: !{})
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!5 = !DIFile(filename: "sroasplit-2.c", directory: "")
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!6 = !DISubroutineType(types: !7)
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!7 = !{!8, !9}
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!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = !DIDerivedType(tag: DW_TAG_typedef, name: "Outer", line: 8, file: !1, baseType: !10)
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!10 = !DICompositeType(tag: DW_TAG_structure_type, line: 6, size: 128, align: 32, file: !1, elements: !11)
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!11 = !{!12}
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!12 = !DIDerivedType(tag: DW_TAG_member, name: "inner", line: 7, size: 128, align: 32, file: !1, scope: !10, baseType: !13)
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!13 = !DICompositeType(tag: DW_TAG_array_type, size: 128, align: 32, baseType: !14, elements: !19)
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!14 = !DIDerivedType(tag: DW_TAG_typedef, name: "Inner", line: 4, file: !1, baseType: !15)
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!15 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 64, align: 32, file: !1, elements: !16)
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!16 = !{!17, !18}
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!17 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !1, scope: !15, baseType: !8)
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!18 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 3, size: 32, align: 32, offset: 32, file: !1, scope: !15, baseType: !8)
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!19 = !{!20}
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!20 = !DISubrange(count: 2)
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!21 = !{i32 2, !"Dwarf Version", i32 2}
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!22 = !{i32 1, !"Debug Info Version", i32 3}
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!23 = !{!"clang version 3.5.0 "}
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!24 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9)
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!25 = !DILocation(line: 10, scope: !4)
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!26 = !DILocalVariable(name: "i1", line: 11, scope: !4, file: !5, type: !14)
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!27 = !DILocation(line: 11, scope: !4)
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!28 = !DILocation(line: 12, scope: !4)
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