83 lines
2.5 KiB
LLVM
83 lines
2.5 KiB
LLVM
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; RUN: llc -verify-machineinstrs -enable-machine-outliner -mtriple \
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; RUN: aarch64-arm-linux-gnu %s -o - | FileCheck %s
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; Check that outlined functions use the dedicated RETAA/RETAB instructions
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; to sign their return address if available.
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define void @a() #0 {
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; CHECK-LABEL: a: // @a
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; CHECK: // %bb.0:
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; CHECK-NEXT: pacibsp
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; CHECK: bl [[OUTLINED_FUNC:OUTLINED_FUNCTION_[0-9]+]]
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%1 = alloca i32, align 4
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%2 = alloca i32, align 4
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%3 = alloca i32, align 4
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%4 = alloca i32, align 4
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%5 = alloca i32, align 4
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%6 = alloca i32, align 4
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store i32 1, i32* %1, align 4
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store i32 2, i32* %2, align 4
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store i32 3, i32* %3, align 4
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store i32 4, i32* %4, align 4
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store i32 5, i32* %5, align 4
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store i32 6, i32* %6, align 4
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; CHECK: retab
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; CHECK-NOT: auti[a,b]sp
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ret void
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}
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define void @b() #0 {
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; CHECK-LABEL: b: // @b
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; CHECK: // %bb.0:
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; CHECK-NEXT: pacibsp
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; CHECK: bl OUTLINED_FUNC
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%1 = alloca i32, align 4
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%2 = alloca i32, align 4
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%3 = alloca i32, align 4
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%4 = alloca i32, align 4
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%5 = alloca i32, align 4
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%6 = alloca i32, align 4
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store i32 1, i32* %1, align 4
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store i32 2, i32* %2, align 4
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store i32 3, i32* %3, align 4
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store i32 4, i32* %4, align 4
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store i32 5, i32* %5, align 4
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store i32 6, i32* %6, align 4
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; CHECK: retab
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; CHECK-NOT: auti[a,b]sp
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ret void
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}
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define void @c() #0 {
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; CHECK-LABEL: c: // @c
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; CHECK: // %bb.0:
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; CHECK-NEXT: pacibsp
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; CHECK: bl OUTLINED_FUNC
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%1 = alloca i32, align 4
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%2 = alloca i32, align 4
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%3 = alloca i32, align 4
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%4 = alloca i32, align 4
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%5 = alloca i32, align 4
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%6 = alloca i32, align 4
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store i32 1, i32* %1, align 4
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store i32 2, i32* %2, align 4
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store i32 3, i32* %3, align 4
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store i32 4, i32* %4, align 4
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store i32 5, i32* %5, align 4
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store i32 6, i32* %6, align 4
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; CHECK: retab
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; CHECK-NOT: auti[a,b]sp
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ret void
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}
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attributes #0 = { "sign-return-address"="all"
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"sign-return-address-key"="b_key"
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"target-features"="+v8.3a"
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nounwind }
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; CHECK: OUTLINED_FUNC
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; CHECK: // %bb.0:
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; CHECK-NEXT: pacibsp
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; CHECK: retab
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; CHECK-NOT: auti[a,b]sp
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