1 ; RUN: llc < %s -O0 -mtriple x86_64-apple-darwin | FileCheck %s 2 ; RUN: llc < %s -O0 -mtriple x86_64-apple-darwin -filetype=obj \ 3 ; RUN: | llvm-dwarfdump -v - --debug-info | FileCheck %s --check-prefix=DWARF 4 ; <rdar://problem/11134152> 5 6 ; CHECK-LABEL: _foo: 7 ; CHECK-NOT: #DEBUG_VALUE 8 9 ; "[DW_FORM_exprloc] <0x2> 91 XX" means fbreg uleb(XX) 10 ; DWARF-LABEL: DW_TAG_formal_parameter 11 ; DWARF-NEXT: DW_AT_location [DW_FORM_exprloc] (DW_OP_fbreg -16) 12 ; DWARF-NEXT: DW_AT_name [DW_FORM_strp] ( {{.*}} = "x") 13 14 ; FIXME: There is no debug info to describe "a". 15 16 define i32 @foo(i32* %x) nounwind uwtable ssp !dbg !5 { 17 entry: 18 %x.addr = alloca i32*, align 8 19 %saved_stack = alloca i8* 20 %cleanup.dest.slot = alloca i32 21 store i32* %x, i32** %x.addr, align 8 22 call void @llvm.dbg.declare(metadata i32** %x.addr, metadata !14, metadata !DIExpression()), !dbg !15 23 %0 = load i32*, i32** %x.addr, align 8, !dbg !16 24 %1 = load i32, i32* %0, align 4, !dbg !16 25 %2 = zext i32 %1 to i64, !dbg !16 26 %3 = call i8* @llvm.stacksave(), !dbg !16 27 store i8* %3, i8** %saved_stack, !dbg !16 28 %vla = alloca i8, i64 %2, align 16, !dbg !16 29 call void @llvm.dbg.declare(metadata i8* %vla, metadata !18, metadata !DIExpression()), !dbg !23 30 store i32 1, i32* %cleanup.dest.slot 31 %4 = load i8*, i8** %saved_stack, !dbg !24 32 call void @llvm.stackrestore(i8* %4), !dbg !24 33 ret i32 0, !dbg !25 34 } 35 36 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone 37 38 declare i8* @llvm.stacksave() nounwind 39 40 declare void @llvm.stackrestore(i8*) nounwind 41 42 !llvm.dbg.cu = !{!0} 43 !llvm.module.flags = !{!27} 44 45 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1 (trunk 153698)", isOptimized: false, emissionKind: FullDebug, file: !26, enums: !1, retainedTypes: !1, globals: !1) 46 !1 = !{} 47 !5 = distinct !DISubprogram(name: "foo", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, file: !26, scope: !0, type: !7) 48 !6 = !DIFile(filename: "20020104-2.c", directory: "/Volumes/Sandbox/llvm") 49 !7 = !DISubroutineType(types: !8) 50 !8 = !{!9, !10} 51 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 52 !10 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !11) 53 !11 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !9) 54 !14 = !DILocalVariable(name: "x", line: 5, arg: 1, scope: !5, file: !6, type: !10) 55 !15 = !DILocation(line: 5, column: 21, scope: !5) 56 !16 = !DILocation(line: 7, column: 13, scope: !17) 57 !17 = distinct !DILexicalBlock(line: 6, column: 1, file: !26, scope: !5) 58 !18 = !DILocalVariable(name: "a", line: 7, scope: !17, file: !6, type: !19) 59 !19 = !DICompositeType(tag: DW_TAG_array_type, align: 8, baseType: !20, elements: !21) 60 !20 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char) 61 !21 = !{!22} 62 !22 = !DISubrange(count: -1) 63 !23 = !DILocation(line: 7, column: 8, scope: !17) 64 !24 = !DILocation(line: 9, column: 1, scope: !17) 65 !25 = !DILocation(line: 8, column: 3, scope: !17) 66 !26 = !DIFile(filename: "20020104-2.c", directory: "/Volumes/Sandbox/llvm") 67 !27 = !{i32 1, !"Debug Info Version", i32 3} 68
