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>
7 ; CHECK-NOT: #DEBUG_VALUE
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")
14 ; FIXME: There is no debug info to describe "a".
16 define i32 @foo(i32* %x) nounwind uwtable ssp !dbg !5 {
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
36 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
38 declare i8* @llvm.stacksave() nounwind
40 declare void @llvm.stackrestore(i8*) nounwind
43 !llvm.module.flags = !{!27}
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)
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)
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)
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}