1 ; RUN: llc < %s -mtriple=i386-apple-darwin9 2 ; RUN: llc < %s -mtriple=x86_64-apple-darwin9 -stack-symbol-ordering=0 -verify-machineinstrs | FileCheck %s 3 ; PR3538 4 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" 5 define signext i8 @foo(i8* %s1) nounwind ssp { 6 7 ; Make sure we generate: 8 ; movq -40(%rbp), %rsp 9 ; Instead of: 10 ; movq -40(%rbp), %rax 11 ; movq %rax, %rsp 12 13 ; CHECK-LABEL: @foo 14 ; CHECK: movq -{{[0-9]+}}(%rbp), %rsp 15 16 entry: 17 %s1_addr = alloca i8* ; <i8**> [#uses=2] 18 %retval = alloca i32 ; <i32*> [#uses=2] 19 %saved_stack.1 = alloca i8* ; <i8**> [#uses=2] 20 %0 = alloca i32 ; <i32*> [#uses=2] 21 %str.0 = alloca [0 x i8]* ; <[0 x i8]**> [#uses=3] 22 %1 = alloca i64 ; <i64*> [#uses=2] 23 %2 = alloca i64 ; <i64*> [#uses=1] 24 %3 = alloca i64 ; <i64*> [#uses=6] 25 %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] 26 call void @llvm.dbg.declare(metadata i8** %s1_addr, metadata !0, metadata !DIExpression()), !dbg !7 27 store i8* %s1, i8** %s1_addr 28 call void @llvm.dbg.declare(metadata [0 x i8]** %str.0, metadata !8, metadata !DIExpression()), !dbg !7 29 %4 = call i8* @llvm.stacksave(), !dbg !7 ; <i8*> [#uses=1] 30 store i8* %4, i8** %saved_stack.1, align 8, !dbg !7 31 %5 = load i8*, i8** %s1_addr, align 8, !dbg !13 ; <i8*> [#uses=1] 32 %6 = call i64 @strlen(i8* %5) nounwind readonly, !dbg !13 ; <i64> [#uses=1] 33 %7 = add i64 %6, 1, !dbg !13 ; <i64> [#uses=1] 34 store i64 %7, i64* %3, align 8, !dbg !13 35 %8 = load i64, i64* %3, align 8, !dbg !13 ; <i64> [#uses=1] 36 %9 = sub nsw i64 %8, 1, !dbg !13 ; <i64> [#uses=0] 37 %10 = load i64, i64* %3, align 8, !dbg !13 ; <i64> [#uses=1] 38 %11 = mul i64 %10, 8, !dbg !13 ; <i64> [#uses=0] 39 %12 = load i64, i64* %3, align 8, !dbg !13 ; <i64> [#uses=1] 40 store i64 %12, i64* %2, align 8, !dbg !13 41 %13 = load i64, i64* %3, align 8, !dbg !13 ; <i64> [#uses=1] 42 %14 = mul i64 %13, 8, !dbg !13 ; <i64> [#uses=0] 43 %15 = load i64, i64* %3, align 8, !dbg !13 ; <i64> [#uses=1] 44 store i64 %15, i64* %1, align 8, !dbg !13 45 %16 = load i64, i64* %1, align 8, !dbg !13 ; <i64> [#uses=1] 46 %17 = trunc i64 %16 to i32, !dbg !13 ; <i32> [#uses=1] 47 %18 = alloca i8, i32 %17, !dbg !13 ; <i8*> [#uses=1] 48 %19 = bitcast i8* %18 to [0 x i8]*, !dbg !13 ; <[0 x i8]*> [#uses=1] 49 store [0 x i8]* %19, [0 x i8]** %str.0, align 8, !dbg !13 50 %20 = load [0 x i8]*, [0 x i8]** %str.0, align 8, !dbg !15 ; <[0 x i8]*> [#uses=1] 51 %21 = getelementptr inbounds [0 x i8], [0 x i8]* %20, i64 0, i64 0, !dbg !15 ; <i8*> [#uses=1] 52 store i8 0, i8* %21, align 1, !dbg !15 53 %22 = load [0 x i8]*, [0 x i8]** %str.0, align 8, !dbg !16 ; <[0 x i8]*> [#uses=1] 54 %23 = getelementptr inbounds [0 x i8], [0 x i8]* %22, i64 0, i64 0, !dbg !16 ; <i8*> [#uses=1] 55 %24 = load i8, i8* %23, align 1, !dbg !16 ; <i8> [#uses=1] 56 %25 = sext i8 %24 to i32, !dbg !16 ; <i32> [#uses=1] 57 store i32 %25, i32* %0, align 4, !dbg !16 58 %26 = load i8*, i8** %saved_stack.1, align 8, !dbg !16 ; <i8*> [#uses=1] 59 call void @llvm.stackrestore(i8* %26), !dbg !16 60 %27 = load i32, i32* %0, align 4, !dbg !16 ; <i32> [#uses=1] 61 store i32 %27, i32* %retval, align 4, !dbg !16 62 br label %return, !dbg !16 63 64 return: ; preds = %entry 65 %retval1 = load i32, i32* %retval, !dbg !16 ; <i32> [#uses=1] 66 %retval12 = trunc i32 %retval1 to i8, !dbg !16 ; <i8> [#uses=1] 67 ret i8 %retval12, !dbg !16 68 } 69 70 declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone 71 72 declare i8* @llvm.stacksave() nounwind 73 74 declare i64 @strlen(i8*) nounwind readonly 75 76 declare void @llvm.stackrestore(i8*) nounwind 77 78 !llvm.dbg.cu = !{!2} 79 !0 = !DILocalVariable(name: "s1", line: 2, arg: 1, scope: !1, file: !2, type: !6) 80 !1 = distinct !DISubprogram(name: "foo", linkageName: "foo", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !2, scope: !2, type: !3) 81 !2 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "4.2.1 (Based on Apple Inc. build 5658) (LLVM build)", isOptimized: true, emissionKind: FullDebug, file: !17, enums: !18, retainedTypes: !18) 82 !3 = !DISubroutineType(types: !4) 83 !4 = !{!5, !6} 84 !5 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char) 85 !6 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, scope: !2, baseType: !5) 86 !7 = !DILocation(line: 2, scope: !1) 87 !8 = !DILocalVariable(name: "str.0", line: 3, scope: !1, file: !2, type: !9) 88 !9 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, scope: !2, baseType: !10) 89 !10 = !DICompositeType(tag: DW_TAG_array_type, size: 8, align: 8, scope: !2, baseType: !5, elements: !11) 90 !11 = !{!12} 91 !12 = !DISubrange(count: 1) 92 !13 = !DILocation(line: 3, scope: !14) 93 !14 = distinct !DILexicalBlock(line: 0, column: 0, file: !17, scope: !1) 94 !15 = !DILocation(line: 4, scope: !14) 95 !16 = !DILocation(line: 5, scope: !14) 96 !17 = !DIFile(filename: "vla.c", directory: "/tmp/") 97 !18 = !{i32 0} 98
