1; RUN: opt %s -passes='sroa,verify' -S -o - | FileCheck %s 2; RUN: opt --try-experimental-debuginfo-iterators %s -passes='sroa,verify' -S -o - | FileCheck %s 3 4; From: 5; struct prog_src_register { 6; unsigned : 4; 7; int Index : 12 + 1; 8; unsigned : 12; 9; unsigned : 4; 10; int : 12 + 1 11; } src_reg_for_float() { 12; struct prog_src_register a; 13; memset(&a, 0, sizeof(a)); 14; int local = a.Index; 15; return a; 16; } 17; ModuleID = 'pr22495.c' 18target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 19target triple = "x86_64-unknown-linux-gnu" 20 21; When SROA is creating new smaller allocas, it may add padding. 22; 23; There should be no debug info for the padding. 24; CHECK-NOT: DW_OP_LLVM_fragment, 56 25; CHECK: DIExpression(DW_OP_LLVM_fragment, 0, 32) 26; CHECK-NOT: DW_OP_LLVM_fragment, 56 27; CHECK: DIExpression(DW_OP_LLVM_fragment, 32, 24) 28; CHECK-NOT: DW_OP_LLVM_fragment, 56 29%struct.prog_src_register = type { i32, i24 } 30 31; Function Attrs: nounwind 32define i64 @src_reg_for_float() #0 !dbg !4 { 33entry: 34 %retval = alloca %struct.prog_src_register, align 4 35 %a = alloca %struct.prog_src_register, align 4 36 %local = alloca i32, align 4 37 call void @llvm.dbg.declare(metadata ptr %a, metadata !16, metadata !17), !dbg !18 38 call void @llvm.memset.p0.i64(ptr align 4 %a, i8 0, i64 8, i1 false), !dbg !19 39 call void @llvm.dbg.declare(metadata ptr %local, metadata !20, metadata !17), !dbg !21 40 %bf.load = load i32, ptr %a, align 4, !dbg !21 41 %bf.shl = shl i32 %bf.load, 15, !dbg !21 42 %bf.ashr = ashr i32 %bf.shl, 19, !dbg !21 43 store i32 %bf.ashr, ptr %local, align 4, !dbg !21 44 call void @llvm.memcpy.p0.p0.i64(ptr align 4 %retval, ptr align 4 %a, i64 8, i1 false), !dbg !22 45 %0 = load i64, ptr %retval, align 1, !dbg !22 46 ret i64 %0, !dbg !22 47} 48 49; Function Attrs: nounwind readnone 50declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 51 52; Function Attrs: nounwind 53declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1) #2 54 55; Function Attrs: nounwind 56declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1) #2 57 58attributes #0 = { nounwind } 59attributes #1 = { nounwind readnone } 60attributes #2 = { nounwind } 61 62!llvm.dbg.cu = !{!0} 63!llvm.module.flags = !{!13, !14} 64!llvm.ident = !{!15} 65 66!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.7.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 67!1 = !DIFile(filename: "<stdin>", directory: "") 68!2 = !{} 69!4 = distinct !DISubprogram(name: "src_reg_for_float", line: 7, isLocal: false, isDefinition: true, isOptimized: false, unit: !0, scopeLine: 7, file: !5, scope: !6, type: !7, retainedNodes: !2) 70!5 = !DIFile(filename: "pr22495.c", directory: "") 71!6 = !DIFile(filename: "pr22495.c", directory: "") 72!7 = !DISubroutineType(types: !8) 73!8 = !{!9} 74!9 = !DICompositeType(tag: DW_TAG_structure_type, name: "prog_src_register", line: 1, size: 64, align: 32, file: !5, elements: !10) 75!10 = !{!11} 76!11 = !DIDerivedType(tag: DW_TAG_member, name: "Index", line: 3, size: 13, align: 32, offset: 4, file: !5, scope: !9, baseType: !12) 77!12 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 78!13 = !{i32 2, !"Dwarf Version", i32 4} 79!14 = !{i32 2, !"Debug Info Version", i32 3} 80!15 = !{!"clang version 3.7.0 "} 81!16 = !DILocalVariable(name: "a", line: 8, scope: !4, file: !6, type: !9) 82!17 = !DIExpression() 83!18 = !DILocation(line: 8, scope: !4) 84!19 = !DILocation(line: 9, scope: !4) 85!20 = !DILocalVariable(name: "local", line: 10, scope: !4, file: !6, type: !12) 86!21 = !DILocation(line: 10, scope: !4) 87!22 = !DILocation(line: 11, scope: !4) 88