derek.holloway
7502bf64a4
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52 lines
1.6 KiB
LLVM
52 lines
1.6 KiB
LLVM
; RUN: llc -mtriple=aarch64-none-linux-gnu < %s | FileCheck %s --check-prefix=NOBTI
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; RUN: llc -mtriple=aarch64-none-linux-gnu -global-isel < %s | FileCheck %s --check-prefix=NOBTI
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; RUN: llc -mtriple=aarch64-none-linux-gnu -fast-isel < %s | FileCheck %s --check-prefix=NOBTI
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; RUN: llc -mtriple=aarch64-none-linux-gnu -mattr=+no-bti-at-return-twice < %s | \
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; RUN: FileCheck %s --check-prefix=NOBTI
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; RUN: llc -mtriple=aarch64-none-linux-gnu -global-isel -mattr=+no-bti-at-return-twice < %s | \
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; RUN: FileCheck %s --check-prefix=NOBTI
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; RUN: llc -mtriple=aarch64-none-linux-gnu -fast-isel -mattr=+no-bti-at-return-twice < %s | \
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; RUN: FileCheck %s --check-prefix=NOBTI
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; Same as setjmp-bti.ll except that we do not enable branch target enforcement for this
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; module. There should be no combination of options that leads to a bti being emitted.
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; C source
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; --------
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; extern int setjmp(ptr);
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; extern void notsetjmp(void);
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;
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; void bbb(void) {
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; setjmp(0);
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; int (*fnptr)(ptr) = setjmp;
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; fnptr(0);
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; notsetjmp();
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; }
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define void @bbb() {
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; NOBTI-LABEL: bbb:
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; NOBTI: bl setjmp
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; NOBTI-NOT: hint #36
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; NOBTI: blr x{{[0-9]+}}
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; NOBTI-NOT: hint #36
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; NOBTI: bl notsetjmp
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; NOBTI-NOT: hint #36
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entry:
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%fnptr = alloca ptr, align 8
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%call = call i32 @setjmp(ptr noundef null) #0
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store ptr @setjmp, ptr %fnptr, align 8
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%0 = load ptr, ptr %fnptr, align 8
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%call1 = call i32 %0(ptr noundef null) #0
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call void @notsetjmp()
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ret void
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}
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declare i32 @setjmp(ptr noundef) #0
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declare void @notsetjmp()
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attributes #0 = { returns_twice }
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; !llvm.module.flags = !{!0}
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; !0 = !{i32 8, !"branch-target-enforcement", i32 1}
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