| ; RUN: opt %s -passes='sroa,verify' -S -o - | FileCheck %s |
| ; From: |
| ; struct prog_src_register { |
| ; unsigned : 4; |
| ; int Index : 12 + 1; |
| ; unsigned : 12; |
| ; unsigned : 4; |
| ; int : 12 + 1 |
| ; } src_reg_for_float() { |
| ; struct prog_src_register a; |
| ; memset(&a, 0, sizeof(a)); |
| ; int local = a.Index; |
| ; return a; |
| ; } |
| ; ModuleID = 'pr22495.c' |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; When SROA is creating new smaller allocas, it may add padding. |
| ; |
| ; There should be no debug info for the padding. |
| ; CHECK-NOT: DW_OP_LLVM_fragment, 56 |
| ; CHECK: DIExpression(DW_OP_LLVM_fragment, 0, 32) |
| ; CHECK-NOT: DW_OP_LLVM_fragment, 56 |
| ; CHECK: DIExpression(DW_OP_LLVM_fragment, 32, 24) |
| ; CHECK-NOT: DW_OP_LLVM_fragment, 56 |
| %struct.prog_src_register = type { i32, i24 } |
| |
| ; Function Attrs: nounwind |
| define i64 @src_reg_for_float() #0 !dbg !4 { |
| entry: |
| %retval = alloca %struct.prog_src_register, align 4 |
| %a = alloca %struct.prog_src_register, align 4 |
| %local = alloca i32, align 4 |
| call void @llvm.dbg.declare(metadata ptr %a, metadata !16, metadata !17), !dbg !18 |
| call void @llvm.memset.p0.i64(ptr align 4 %a, i8 0, i64 8, i1 false), !dbg !19 |
| call void @llvm.dbg.declare(metadata ptr %local, metadata !20, metadata !17), !dbg !21 |
| %bf.load = load i32, ptr %a, align 4, !dbg !21 |
| %bf.shl = shl i32 %bf.load, 15, !dbg !21 |
| %bf.ashr = ashr i32 %bf.shl, 19, !dbg !21 |
| store i32 %bf.ashr, ptr %local, align 4, !dbg !21 |
| call void @llvm.memcpy.p0.p0.i64(ptr align 4 %retval, ptr align 4 %a, i64 8, i1 false), !dbg !22 |
| %0 = load i64, ptr %retval, align 1, !dbg !22 |
| ret i64 %0, !dbg !22 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1) #2 |
| |
| ; Function Attrs: nounwind |
| declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1) #2 |
| |
| attributes #0 = { nounwind } |
| attributes #1 = { nounwind readnone } |
| attributes #2 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!13, !14} |
| !llvm.ident = !{!15} |
| |
| !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) |
| !1 = !DIFile(filename: "<stdin>", directory: "") |
| !2 = !{} |
| !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) |
| !5 = !DIFile(filename: "pr22495.c", directory: "") |
| !6 = !DIFile(filename: "pr22495.c", directory: "") |
| !7 = !DISubroutineType(types: !8) |
| !8 = !{!9} |
| !9 = !DICompositeType(tag: DW_TAG_structure_type, name: "prog_src_register", line: 1, size: 64, align: 32, file: !5, elements: !10) |
| !10 = !{!11} |
| !11 = !DIDerivedType(tag: DW_TAG_member, name: "Index", line: 3, size: 13, align: 32, offset: 4, file: !5, scope: !9, baseType: !12) |
| !12 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !13 = !{i32 2, !"Dwarf Version", i32 4} |
| !14 = !{i32 2, !"Debug Info Version", i32 3} |
| !15 = !{!"clang version 3.7.0 "} |
| !16 = !DILocalVariable(name: "a", line: 8, scope: !4, file: !6, type: !9) |
| !17 = !DIExpression() |
| !18 = !DILocation(line: 8, scope: !4) |
| !19 = !DILocation(line: 9, scope: !4) |
| !20 = !DILocalVariable(name: "local", line: 10, scope: !4, file: !6, type: !12) |
| !21 = !DILocation(line: 10, scope: !4) |
| !22 = !DILocation(line: 11, scope: !4) |