1 ; RUN: opt %s -sroa -verify -S -o - | FileCheck %s
3 ; struct prog_src_register {
9 ; } src_reg_for_float() {
10 ; struct prog_src_register a;
11 ; memset(&a, 0, sizeof(a));
12 ; int local = a.Index;
15 ; ModuleID = 'pr22495.c'
16 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
17 target triple = "x86_64-unknown-linux-gnu"
19 ; When SROA is creating new smaller allocas, it may add padding.
21 ; There should be no debug info for the padding.
22 ; CHECK-NOT: DW_OP_LLVM_fragment, 56
23 ; CHECK: DIExpression(DW_OP_LLVM_fragment, 0, 32)
24 ; CHECK-NOT: DW_OP_LLVM_fragment, 56
25 ; CHECK: DIExpression(DW_OP_LLVM_fragment, 32, 24)
26 ; CHECK-NOT: DW_OP_LLVM_fragment, 56
27 %struct.prog_src_register = type { i32, i24 }
29 ; Function Attrs: nounwind
30 define i64 @src_reg_for_float() #0 !dbg !4 {
32 %retval = alloca %struct.prog_src_register, align 4
33 %a = alloca %struct.prog_src_register, align 4
34 %local = alloca i32, align 4
35 call void @llvm.dbg.declare(metadata %struct.prog_src_register* %a, metadata !16, metadata !17), !dbg !18
36 %0 = bitcast %struct.prog_src_register* %a to i8*, !dbg !19
37 call void @llvm.memset.p0i8.i64(i8* align 4 %0, i8 0, i64 8, i1 false), !dbg !19
38 call void @llvm.dbg.declare(metadata i32* %local, metadata !20, metadata !17), !dbg !21
39 %1 = bitcast %struct.prog_src_register* %a to i32*, !dbg !21
40 %bf.load = load i32, i32* %1, 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, i32* %local, align 4, !dbg !21
44 %2 = bitcast %struct.prog_src_register* %retval to i8*, !dbg !22
45 %3 = bitcast %struct.prog_src_register* %a to i8*, !dbg !22
46 call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %2, i8* align 4 %3, i64 8, i1 false), !dbg !22
47 %4 = bitcast %struct.prog_src_register* %retval to i64*, !dbg !22
48 %5 = load i64, i64* %4, align 1, !dbg !22
52 ; Function Attrs: nounwind readnone
53 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
55 ; Function Attrs: nounwind
56 declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1) #2
58 ; Function Attrs: nounwind
59 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1) #2
61 attributes #0 = { nounwind }
62 attributes #1 = { nounwind readnone }
63 attributes #2 = { nounwind }
66 !llvm.module.flags = !{!13, !14}
69 !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)
70 !1 = !DIFile(filename: "<stdin>", directory: "")
72 !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)
73 !5 = !DIFile(filename: "pr22495.c", directory: "")
74 !6 = !DIFile(filename: "pr22495.c", directory: "")
75 !7 = !DISubroutineType(types: !8)
77 !9 = !DICompositeType(tag: DW_TAG_structure_type, name: "prog_src_register", line: 1, size: 64, align: 32, file: !5, elements: !10)
79 !11 = !DIDerivedType(tag: DW_TAG_member, name: "Index", line: 3, size: 13, align: 32, offset: 4, file: !5, scope: !9, baseType: !12)
80 !12 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
81 !13 = !{i32 2, !"Dwarf Version", i32 4}
82 !14 = !{i32 2, !"Debug Info Version", i32 3}
83 !15 = !{!"clang version 3.7.0 "}
84 !16 = !DILocalVariable(name: "a", line: 8, scope: !4, file: !6, type: !9)
86 !18 = !DILocation(line: 8, scope: !4)
87 !19 = !DILocation(line: 9, scope: !4)
88 !20 = !DILocalVariable(name: "local", line: 10, scope: !4, file: !6, type: !12)
89 !21 = !DILocation(line: 10, scope: !4)
90 !22 = !DILocation(line: 11, scope: !4)