| ; RUN: opt %s -passes='sroa,verify' -S -o - | FileCheck %s |
| ; |
| ; Test that we can partial emit debug info for aggregates repeatedly |
| ; split up by SROA. |
| ; |
| ; // Compile with -O1 |
| ; typedef struct { |
| ; int a; |
| ; long int b; |
| ; } Inner; |
| ; |
| ; typedef struct { |
| ; Inner inner[2]; |
| ; } Outer; |
| ; |
| ; int foo(Outer outer) { |
| ; Inner i1 = outer.inner[1]; |
| ; return i1.a; |
| ; } |
| ; |
| |
| ; Verify that SROA creates a variable piece when splitting i1. |
| ; CHECK: %[[I1:.*]] = alloca [12 x i8], align 4 |
| ; CHECK: call void @llvm.dbg.declare(metadata ptr %[[I1]], metadata ![[VAR:[0-9]+]], metadata !DIExpression(DW_OP_LLVM_fragment, 32, 96)) |
| ; CHECK: call void @llvm.dbg.value(metadata i32 %[[A:.*]], metadata ![[VAR]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)) |
| ; CHECK: ret i32 %[[A]] |
| ; Read Var and Piece: |
| ; CHECK: ![[VAR]] = !DILocalVariable(name: "i1",{{.*}} line: 11, |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.9.0" |
| |
| %struct.Outer = type { [2 x %struct.Inner] } |
| %struct.Inner = type { i32, i64 } |
| |
| ; Function Attrs: nounwind ssp uwtable |
| define i32 @foo(ptr byval(%struct.Outer) align 8 %outer) #0 !dbg !4 { |
| entry: |
| %i1 = alloca %struct.Inner, align 8 |
| call void @llvm.dbg.declare(metadata ptr %outer, metadata !25, metadata !2), !dbg !26 |
| call void @llvm.dbg.declare(metadata ptr %i1, metadata !27, metadata !2), !dbg !28 |
| %arrayidx = getelementptr inbounds [2 x %struct.Inner], ptr %outer, i32 0, i64 1, !dbg !28 |
| call void @llvm.memcpy.p0.p0.i64(ptr align 8 %i1, ptr align 8 %arrayidx, i64 16, i1 false), !dbg !28 |
| %0 = load i32, ptr %i1, align 4, !dbg !29 |
| ret i32 %0, !dbg !29 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1) #2 |
| |
| attributes #0 = { nounwind ssp uwtable } |
| attributes #1 = { nounwind readnone } |
| attributes #2 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!22, !23} |
| !llvm.ident = !{!24} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !{}, retainedTypes: !{}, globals: !{}, imports: !{}) |
| !1 = !DIFile(filename: "sroasplit-1.c", directory: "") |
| !2 = !DIExpression() |
| !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, retainedNodes: !{}) |
| !5 = !DIFile(filename: "sroasplit-1.c", directory: "") |
| !6 = !DISubroutineType(types: !7) |
| !7 = !{!8, !9} |
| !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !9 = !DIDerivedType(tag: DW_TAG_typedef, name: "Outer", line: 8, file: !1, baseType: !10) |
| !10 = !DICompositeType(tag: DW_TAG_structure_type, line: 6, size: 256, align: 64, file: !1, elements: !11) |
| !11 = !{!12} |
| !12 = !DIDerivedType(tag: DW_TAG_member, name: "inner", line: 7, size: 256, align: 64, file: !1, scope: !10, baseType: !13) |
| !13 = !DICompositeType(tag: DW_TAG_array_type, size: 256, align: 64, baseType: !14, elements: !20) |
| !14 = !DIDerivedType(tag: DW_TAG_typedef, name: "Inner", line: 4, file: !1, baseType: !15) |
| !15 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 128, align: 64, file: !1, elements: !16) |
| !16 = !{!17, !18} |
| !17 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !1, scope: !15, baseType: !8) |
| !18 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 3, size: 64, align: 64, offset: 64, file: !1, scope: !15, baseType: !19) |
| !19 = !DIBasicType(tag: DW_TAG_base_type, name: "long int", size: 64, align: 64, encoding: DW_ATE_signed) |
| !20 = !{!21} |
| !21 = !DISubrange(count: 2) |
| !22 = !{i32 2, !"Dwarf Version", i32 2} |
| !23 = !{i32 1, !"Debug Info Version", i32 3} |
| !24 = !{!"clang version 3.5.0 "} |
| !25 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9) |
| !26 = !DILocation(line: 10, scope: !4) |
| !27 = !DILocalVariable(name: "i1", line: 11, scope: !4, file: !5, type: !14) |
| !28 = !DILocation(line: 11, scope: !4) |
| !29 = !DILocation(line: 12, scope: !4) |