derek.holloway
7502bf64a4
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68 lines
1.5 KiB
LLVM
68 lines
1.5 KiB
LLVM
; RUN: llc -verify-machineinstrs -o - %s -mtriple=aarch64-linux-gnu -mattr=+reserve-x18 | FileCheck %s
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; RUN: not --crash llc -verify-machineinstrs -o - %s -mtriple=arm64-apple-darwin 2>&1 | FileCheck %s --check-prefix=DARWIN
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; DARWIN: ShadowCallStack attribute not supported on Darwin.
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define void @f1() shadowcallstack {
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; CHECK: f1:
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; CHECK-NOT: x18
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; CHECK: ret
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ret void
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}
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declare void @foo()
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define void @f2() shadowcallstack {
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; CHECK: f2:
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; CHECK-NOT: x18
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; CHECK: b foo
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tail call void @foo()
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ret void
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}
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declare i32 @bar()
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define i32 @f3() shadowcallstack {
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; CHECK: f3:
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; CHECK: str x30, [x18], #8
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; CHECK: .cfi_escape 0x16, 0x12, 0x02, 0x82, 0x78
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; CHECK: str x30, [sp, #-16]!
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%res = call i32 @bar()
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%res1 = add i32 %res, 1
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; CHECK: ldr x30, [sp], #16
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; CHECK: ldr x30, [x18, #-8]!
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; CHECK: ret
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ret i32 %res
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}
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define i32 @f4() shadowcallstack {
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; CHECK: f4:
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%res1 = call i32 @bar()
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%res2 = call i32 @bar()
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%res3 = call i32 @bar()
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%res4 = call i32 @bar()
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%res12 = add i32 %res1, %res2
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%res34 = add i32 %res3, %res4
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%res1234 = add i32 %res12, %res34
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; CHECK: ldp x30,{{.*}}, [sp
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; CHECK: ldr x30, [x18, #-8]!
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; CHECK: ret
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ret i32 %res1234
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}
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define i32 @f5() shadowcallstack nounwind {
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; CHECK: f5:
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; CHECK-NOT: .cfi_escape
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%res = call i32 @bar()
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%res1 = add i32 %res, 1
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ret i32 %res
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}
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define i32 @f6() shadowcallstack nounwind uwtable {
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; CHECK: f6:
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; CHECK: .cfi_escape 0x16, 0x12, 0x02, 0x82, 0x78
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%res = call i32 @bar()
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%res1 = add i32 %res, 1
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ret i32 %res
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}
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