| ; RUN: llc -mtriple=x86_64-apple-darwin %s -o %t.o -filetype=obj -O0 |
| ; RUN: llvm-dwarfdump -v %t.o | FileCheck %s |
| ; |
| ; Test that on x86_64, the 32-bit subregister esi is emitted as |
| ; subregister of the 64-bit rsi. |
| ; |
| ; rdar://problem/16015314 |
| ; |
| ; CHECK: .debug_info contents: |
| ; CHECK: DW_TAG_variable |
| ; CHECK-NEXT: DW_AT_location [DW_FORM_data4] ( |
| ; CHECK-NEXT: [{{.*}}, {{.*}}): DW_OP_reg4 RSI) |
| ; CHECK-NEXT: DW_AT_name [DW_FORM_strp]{{.*}} "a" |
| ; |
| ; struct bar { |
| ; int a; |
| ; int b; |
| ; }; |
| ; |
| ; void doSomething() __attribute__ ((noinline)); |
| ; |
| ; void doSomething(struct bar *b) |
| ; { |
| ; int a = b->a; |
| ; printf("%d\n", a); // set breakpoint here |
| ; } |
| ; |
| ; int main() |
| ; { |
| ; struct bar myBar = { 3, 4 }; |
| ; doSomething(&myBar); |
| ; return 0; |
| ; } |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.9.0" |
| |
| %struct.bar = type { i32, i32 } |
| |
| @.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1 |
| @main.myBar = private unnamed_addr constant %struct.bar { i32 3, i32 4 }, align 4 |
| |
| ; Function Attrs: noinline nounwind ssp uwtable |
| define void @doSomething(ptr nocapture readonly %b) #0 !dbg !4 { |
| entry: |
| tail call void @llvm.dbg.value(metadata ptr %b, metadata !15, metadata !DIExpression()), !dbg !25 |
| %0 = load i32, ptr %b, align 4, !dbg !26, !tbaa !27 |
| tail call void @llvm.dbg.value(metadata i32 %0, metadata !16, metadata !DIExpression()), !dbg !26 |
| %call = tail call i32 (ptr, ...) @printf(ptr @.str, i32 %0) #4, !dbg !32 |
| ret void, !dbg !33 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| ; Function Attrs: nounwind |
| declare i32 @printf(ptr nocapture readonly, ...) #2 |
| |
| ; Function Attrs: nounwind ssp uwtable |
| define i32 @main() #3 !dbg !17 { |
| entry: |
| %myBar = alloca i64, align 8, !dbg !34 |
| tail call void @llvm.dbg.declare(metadata ptr %myBar, metadata !21, metadata !DIExpression()), !dbg !34 |
| store i64 17179869187, ptr %myBar, align 8, !dbg !34 |
| call void @doSomething(ptr %myBar), !dbg !35 |
| ret i32 0, !dbg !36 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #1 |
| |
| attributes #0 = { noinline nounwind ssp uwtable } |
| attributes #1 = { nounwind readnone } |
| attributes #2 = { nounwind } |
| attributes #3 = { nounwind ssp uwtable } |
| attributes #4 = { 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 ", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) |
| !1 = !DIFile(filename: "subregisters.c", directory: "") |
| !2 = !{} |
| !4 = distinct !DISubprogram(name: "doSomething", line: 10, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 11, file: !1, scope: !5, type: !6, retainedNodes: !14) |
| !5 = !DIFile(filename: "subregisters.c", directory: "") |
| !6 = !DISubroutineType(types: !7) |
| !7 = !{null, !8} |
| !8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9) |
| !9 = !DICompositeType(tag: DW_TAG_structure_type, name: "bar", line: 3, size: 64, align: 32, file: !1, elements: !10) |
| !10 = !{!11, !13} |
| !11 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 4, size: 32, align: 32, file: !1, scope: !9, baseType: !12) |
| !12 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !13 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 5, size: 32, align: 32, offset: 32, file: !1, scope: !9, baseType: !12) |
| !14 = !{!15, !16} |
| !15 = !DILocalVariable(name: "b", line: 10, arg: 1, scope: !4, file: !5, type: !8) |
| !16 = !DILocalVariable(name: "a", line: 12, scope: !4, file: !5, type: !12) |
| !17 = distinct !DISubprogram(name: "main", line: 16, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !0, scopeLine: 17, file: !1, scope: !5, type: !18, retainedNodes: !20) |
| !18 = !DISubroutineType(types: !19) |
| !19 = !{!12} |
| !20 = !{!21} |
| !21 = !DILocalVariable(name: "myBar", line: 18, scope: !17, file: !5, type: !9) |
| !22 = !{i32 2, !"Dwarf Version", i32 2} |
| !23 = !{i32 1, !"Debug Info Version", i32 3} |
| !24 = !{!"clang version 3.5 "} |
| !25 = !DILocation(line: 10, scope: !4) |
| !26 = !DILocation(line: 12, scope: !4) |
| !27 = !{!28, !29, i64 0} |
| !28 = !{!"bar", !29, i64 0, !29, i64 4} |
| !29 = !{!"int", !30, i64 0} |
| !30 = !{!"omnipotent char", !31, i64 0} |
| !31 = !{!"Simple C/C++ TBAA"} |
| !32 = !DILocation(line: 13, scope: !4) |
| !33 = !DILocation(line: 14, scope: !4) |
| !34 = !DILocation(line: 18, scope: !17) |
| !35 = !DILocation(line: 19, scope: !17) |
| !36 = !DILocation(line: 20, scope: !17) |