1 ; RUN: llc -O2 < %s | FileCheck %s 2 ; RUN: llc -O2 -regalloc=basic < %s | FileCheck %s 3 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" 4 target triple = "x86_64-apple-darwin10" 5 6 %struct.a = type { i32, %struct.a* } 7 8 @llvm.used = appending global [1 x i8*] [i8* bitcast (i8* (%struct.a*)* @bar to i8*)], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0] 9 10 define i8* @bar(%struct.a* %myvar) nounwind optsize noinline ssp !dbg !9 { 11 entry: 12 tail call void @llvm.dbg.value(metadata %struct.a* %myvar, i64 0, metadata !8, metadata !DIExpression()), !dbg !DILocation(scope: !9) 13 %0 = getelementptr inbounds %struct.a, %struct.a* %myvar, i64 0, i32 0, !dbg !28 ; <i32*> [#uses=1] 14 %1 = load i32, i32* %0, align 8, !dbg !28 ; <i32> [#uses=1] 15 tail call void @foo(i32 %1) nounwind optsize noinline ssp, !dbg !28 16 %2 = bitcast %struct.a* %myvar to i8*, !dbg !30 ; <i8*> [#uses=1] 17 ret i8* %2, !dbg !30 18 } 19 20 declare void @foo(i32) nounwind optsize noinline ssp 21 22 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone 23 24 !llvm.dbg.cu = !{!2} 25 !llvm.module.flags = !{!38} 26 27 !0 = !DIGlobalVariable(name: "ret", line: 7, isLocal: false, isDefinition: true, scope: !1, file: !1, type: !3) 28 !1 = !DIFile(filename: "foo.c", directory: "/tmp/") 29 !2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: FullDebug, file: !36, enums: !37, retainedTypes: !37, globals: !31, imports: !37) 30 !3 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 31 !4 = !DILocalVariable(name: "x", line: 12, arg: 1, scope: !5, file: !1, type: !3) 32 !5 = distinct !DISubprogram(name: "foo", linkageName: "foo", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !2, scopeLine: 13, file: !36, scope: !1, type: !6, variables: !33) 33 !6 = !DISubroutineType(types: !7) 34 !7 = !{null, !3} 35 !8 = !DILocalVariable(name: "myvar", line: 17, arg: 1, scope: !9, file: !1, type: !13) 36 !9 = distinct !DISubprogram(name: "bar", linkageName: "bar", line: 17, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !2, scopeLine: 17, file: !36, scope: !1, type: !10, variables: !34) 37 !10 = !DISubroutineType(types: !11) 38 !11 = !{!12, !13} 39 !12 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !36, scope: !1, baseType: null) 40 !13 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !36, scope: !1, baseType: !14) 41 !14 = !DICompositeType(tag: DW_TAG_structure_type, name: "a", line: 2, size: 128, align: 64, file: !36, scope: !1, elements: !15) 42 !15 = !{!16, !17} 43 !16 = !DIDerivedType(tag: DW_TAG_member, name: "c", line: 3, size: 32, align: 32, file: !36, scope: !14, baseType: !3) 44 !17 = !DIDerivedType(tag: DW_TAG_member, name: "d", line: 4, size: 64, align: 64, offset: 64, file: !36, scope: !14, baseType: !13) 45 !18 = !DILocalVariable(name: "argc", line: 22, arg: 1, scope: !19, file: !1, type: !3) 46 !19 = distinct !DISubprogram(name: "main", linkageName: "main", line: 22, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !2, scopeLine: 22, file: !36, scope: !1, type: !20, variables: !35) 47 !20 = !DISubroutineType(types: !21) 48 !21 = !{!3, !3, !22} 49 !22 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !36, scope: !1, baseType: !23) 50 !23 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, file: !36, scope: !1, baseType: !24) 51 !24 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char) 52 !25 = !DILocalVariable(name: "argv", line: 22, arg: 2, scope: !19, file: !1, type: !22) 53 !26 = !DILocalVariable(name: "e", line: 23, scope: !27, file: !1, type: !14) 54 !27 = distinct !DILexicalBlock(line: 22, column: 0, file: !36, scope: !19) 55 !28 = !DILocation(line: 18, scope: !29) 56 !29 = distinct !DILexicalBlock(line: 17, column: 0, file: !36, scope: !9) 57 !30 = !DILocation(line: 19, scope: !29) 58 !31 = !{!0} 59 !33 = !{!4} 60 !34 = !{!8} 61 !35 = !{!18, !25, !26} 62 !36 = !DIFile(filename: "foo.c", directory: "/tmp/") 63 !37 = !{} 64 65 ; The variable bar:myvar changes registers after the first movq. 66 ; It is cobbered by popq %rbx 67 ; CHECK: movq 68 ; CHECK-NEXT: [[LABEL:Ltmp[0-9]*]] 69 ; CHECK: .loc 1 19 0 70 ; CHECK: popq 71 ; CHECK-NEXT: [[CLOBBER:Ltmp[0-9]*]] 72 73 74 ; CHECK: Ldebug_loc0: 75 ; CHECK-NEXT: [[SET1:.*]] = Lfunc_begin0-Lfunc_begin0 76 ; CHECK-NEXT: .quad [[SET1]] 77 ; CHECK-NEXT: [[SET2:.*]] = [[LABEL]]-Lfunc_begin0 78 ; CHECK-NEXT: .quad [[SET2]] 79 ; CHECK-NEXT: .short 1 ## Loc expr size 80 ; CHECK-NEXT: .byte 85 81 ; CHECK-NEXT: [[SET3:.*]] = [[LABEL]]-Lfunc_begin0 82 ; CHECK-NEXT: .quad [[SET3]] 83 ; CHECK-NEXT: [[SET4:.*]] = [[CLOBBER]]-Lfunc_begin0 84 ; CHECK-NEXT: .quad [[SET4]] 85 ; CHECK-NEXT: .short 1 ## Loc expr size 86 ; CHECK-NEXT: .byte 83 87 !38 = !{i32 1, !"Debug Info Version", i32 3} 88
