99 lines
5.3 KiB
LLVM
99 lines
5.3 KiB
LLVM
; RUN: llc < %s
|
|
; RUN: llc < %s -stack-symbol-ordering=0 -march=x86-64 -verify-machineinstrs | FileCheck %s
|
|
; PR3538
|
|
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"
|
|
target triple = "i386-apple-darwin9"
|
|
define signext i8 @foo(i8* %s1) nounwind ssp {
|
|
|
|
; Make sure we generate:
|
|
; movq -40(%rbp), %rsp
|
|
; Instead of:
|
|
; movq -40(%rbp), %rax
|
|
; movq %rax, %rsp
|
|
|
|
; CHECK-LABEL: @foo
|
|
; CHECK: movq -{{[0-9]+}}(%rbp), %rsp
|
|
|
|
entry:
|
|
%s1_addr = alloca i8* ; <i8**> [#uses=2]
|
|
%retval = alloca i32 ; <i32*> [#uses=2]
|
|
%saved_stack.1 = alloca i8* ; <i8**> [#uses=2]
|
|
%0 = alloca i32 ; <i32*> [#uses=2]
|
|
%str.0 = alloca [0 x i8]* ; <[0 x i8]**> [#uses=3]
|
|
%1 = alloca i64 ; <i64*> [#uses=2]
|
|
%2 = alloca i64 ; <i64*> [#uses=1]
|
|
%3 = alloca i64 ; <i64*> [#uses=6]
|
|
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
|
|
call void @llvm.dbg.declare(metadata i8** %s1_addr, metadata !0, metadata !DIExpression()), !dbg !7
|
|
store i8* %s1, i8** %s1_addr
|
|
call void @llvm.dbg.declare(metadata [0 x i8]** %str.0, metadata !8, metadata !DIExpression()), !dbg !7
|
|
%4 = call i8* @llvm.stacksave(), !dbg !7 ; <i8*> [#uses=1]
|
|
store i8* %4, i8** %saved_stack.1, align 8, !dbg !7
|
|
%5 = load i8*, i8** %s1_addr, align 8, !dbg !13 ; <i8*> [#uses=1]
|
|
%6 = call i64 @strlen(i8* %5) nounwind readonly, !dbg !13 ; <i64> [#uses=1]
|
|
%7 = add i64 %6, 1, !dbg !13 ; <i64> [#uses=1]
|
|
store i64 %7, i64* %3, align 8, !dbg !13
|
|
%8 = load i64, i64* %3, align 8, !dbg !13 ; <i64> [#uses=1]
|
|
%9 = sub nsw i64 %8, 1, !dbg !13 ; <i64> [#uses=0]
|
|
%10 = load i64, i64* %3, align 8, !dbg !13 ; <i64> [#uses=1]
|
|
%11 = mul i64 %10, 8, !dbg !13 ; <i64> [#uses=0]
|
|
%12 = load i64, i64* %3, align 8, !dbg !13 ; <i64> [#uses=1]
|
|
store i64 %12, i64* %2, align 8, !dbg !13
|
|
%13 = load i64, i64* %3, align 8, !dbg !13 ; <i64> [#uses=1]
|
|
%14 = mul i64 %13, 8, !dbg !13 ; <i64> [#uses=0]
|
|
%15 = load i64, i64* %3, align 8, !dbg !13 ; <i64> [#uses=1]
|
|
store i64 %15, i64* %1, align 8, !dbg !13
|
|
%16 = load i64, i64* %1, align 8, !dbg !13 ; <i64> [#uses=1]
|
|
%17 = trunc i64 %16 to i32, !dbg !13 ; <i32> [#uses=1]
|
|
%18 = alloca i8, i32 %17, !dbg !13 ; <i8*> [#uses=1]
|
|
%19 = bitcast i8* %18 to [0 x i8]*, !dbg !13 ; <[0 x i8]*> [#uses=1]
|
|
store [0 x i8]* %19, [0 x i8]** %str.0, align 8, !dbg !13
|
|
%20 = load [0 x i8]*, [0 x i8]** %str.0, align 8, !dbg !15 ; <[0 x i8]*> [#uses=1]
|
|
%21 = getelementptr inbounds [0 x i8], [0 x i8]* %20, i64 0, i64 0, !dbg !15 ; <i8*> [#uses=1]
|
|
store i8 0, i8* %21, align 1, !dbg !15
|
|
%22 = load [0 x i8]*, [0 x i8]** %str.0, align 8, !dbg !16 ; <[0 x i8]*> [#uses=1]
|
|
%23 = getelementptr inbounds [0 x i8], [0 x i8]* %22, i64 0, i64 0, !dbg !16 ; <i8*> [#uses=1]
|
|
%24 = load i8, i8* %23, align 1, !dbg !16 ; <i8> [#uses=1]
|
|
%25 = sext i8 %24 to i32, !dbg !16 ; <i32> [#uses=1]
|
|
store i32 %25, i32* %0, align 4, !dbg !16
|
|
%26 = load i8*, i8** %saved_stack.1, align 8, !dbg !16 ; <i8*> [#uses=1]
|
|
call void @llvm.stackrestore(i8* %26), !dbg !16
|
|
%27 = load i32, i32* %0, align 4, !dbg !16 ; <i32> [#uses=1]
|
|
store i32 %27, i32* %retval, align 4, !dbg !16
|
|
br label %return, !dbg !16
|
|
|
|
return: ; preds = %entry
|
|
%retval1 = load i32, i32* %retval, !dbg !16 ; <i32> [#uses=1]
|
|
%retval12 = trunc i32 %retval1 to i8, !dbg !16 ; <i8> [#uses=1]
|
|
ret i8 %retval12, !dbg !16
|
|
}
|
|
|
|
declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
|
|
|
|
declare i8* @llvm.stacksave() nounwind
|
|
|
|
declare i64 @strlen(i8*) nounwind readonly
|
|
|
|
declare void @llvm.stackrestore(i8*) nounwind
|
|
|
|
!llvm.dbg.cu = !{!2}
|
|
!0 = !DILocalVariable(name: "s1", line: 2, arg: 1, scope: !1, file: !2, type: !6)
|
|
!1 = distinct !DISubprogram(name: "foo", linkageName: "foo", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !2, scope: !2, type: !3)
|
|
!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)
|
|
!3 = !DISubroutineType(types: !4)
|
|
!4 = !{!5, !6}
|
|
!5 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
|
|
!6 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, scope: !2, baseType: !5)
|
|
!7 = !DILocation(line: 2, scope: !1)
|
|
!8 = !DILocalVariable(name: "str.0", line: 3, scope: !1, file: !2, type: !9)
|
|
!9 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, scope: !2, baseType: !10)
|
|
!10 = !DICompositeType(tag: DW_TAG_array_type, size: 8, align: 8, scope: !2, baseType: !5, elements: !11)
|
|
!11 = !{!12}
|
|
!12 = !DISubrange(count: 1)
|
|
!13 = !DILocation(line: 3, scope: !14)
|
|
!14 = distinct !DILexicalBlock(line: 0, column: 0, file: !17, scope: !1)
|
|
!15 = !DILocation(line: 4, scope: !14)
|
|
!16 = !DILocation(line: 5, scope: !14)
|
|
!17 = !DIFile(filename: "vla.c", directory: "/tmp/")
|
|
!18 = !{i32 0}
|