70 lines
1.8 KiB
LLVM
70 lines
1.8 KiB
LLVM
; RUN: llc -enable-machine-outliner -mtriple=x86_64-apple-darwin < %s | FileCheck %s
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; Ensure that the outliner doesn't outline from any functions that use a redzone.
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declare i8* @llvm.stacksave() #1
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declare void @llvm.stackrestore(i8*) #1
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; This function has a red zone. We shouldn't outline from it.
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; CHECK-LABEL: doggo
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; CHECK-NOT: OUTLINED
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define void @doggo(i32) #0 {
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%2 = alloca i32, align 4
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store i32 %0, i32* %2, align 4
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%3 = load i32, i32* %2, align 4
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%4 = add nsw i32 %3, 1
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store i32 %4, i32* %2, align 4
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ret void
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}
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; Ditto.
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; CHECK-LABEL: pupper
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; CHECK-NOT: OUTLINED
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define void @pupper(i32) #0 {
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%2 = alloca i32, align 4
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store i32 %0, i32* %2, align 4
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%3 = load i32, i32* %2, align 4
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%4 = add nsw i32 %3, 1
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store i32 %4, i32* %2, align 4
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ret void
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}
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; This doesn't have a redzone. Outlining is okay.
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; CHECK-LABEL: boofer
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; CHECK: OUTLINED
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define void @boofer(i32) #0 {
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%2 = alloca i32, align 4
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%3 = alloca i8*, align 8
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%4 = alloca i64, align 8
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store i32 %0, i32* %2, align 4
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%5 = load i32, i32* %2, align 4
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%6 = zext i32 %5 to i64
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%7 = call i8* @llvm.stacksave()
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store i8* %7, i8** %3, align 8
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%8 = alloca i32, i64 %6, align 16
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store i64 %6, i64* %4, align 8
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%9 = load i8*, i8** %3, align 8
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call void @llvm.stackrestore(i8* %9)
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ret void
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}
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; Ditto.
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; CHECK-LABEL: shibe
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; CHECK: OUTLINED
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define void @shibe(i32) #0 {
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%2 = alloca i32, align 4
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%3 = alloca i8*, align 8
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%4 = alloca i64, align 8
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store i32 %0, i32* %2, align 4
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%5 = load i32, i32* %2, align 4
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%6 = zext i32 %5 to i64
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%7 = call i8* @llvm.stacksave()
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store i8* %7, i8** %3, align 8
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%8 = alloca i32, i64 %6, align 16
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store i64 %6, i64* %4, align 8
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%9 = load i8*, i8** %3, align 8
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call void @llvm.stackrestore(i8* %9)
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ret void
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}
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attributes #0 = { noinline nounwind optnone ssp uwtable "frame-pointer"="all" }
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attributes #1 = { nounwind } |