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TheRock/compiler/amd-llvm/llvm/test/CodeGen/AArch64/setjmp-bti.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

76 lines
2.6 KiB
LLVM

; RUN: llc -mtriple=aarch64-none-linux-gnu < %s | FileCheck %s --check-prefix=BTI
; RUN: llc -mtriple=aarch64-none-linux-gnu -global-isel < %s | FileCheck %s --check-prefix=BTI
; RUN: llc -mtriple=aarch64-none-linux-gnu -fast-isel < %s | FileCheck %s --check-prefix=BTI
; RUN: llc -mtriple=aarch64-none-linux-gnu -mattr=+harden-sls-blr< %s | FileCheck %s --check-prefix=BTISLS
; RUN: llc -mtriple=aarch64-none-linux-gnu -global-isel -mattr=+harden-sls-blr< %s | FileCheck %s --check-prefix=BTISLS
; RUN: llc -mtriple=aarch64-none-linux-gnu -fast-isel -mattr=+harden-sls-blr< %s | FileCheck %s --check-prefix=BTISLS
; RUN: llc -mtriple=aarch64-none-linux-gnu -mattr=+no-bti-at-return-twice < %s | \
; RUN: FileCheck %s --check-prefix=NOBTI
; RUN: llc -mtriple=aarch64-none-linux-gnu -global-isel -mattr=+no-bti-at-return-twice < %s | \
; RUN: FileCheck %s --check-prefix=NOBTI
; RUN: llc -mtriple=aarch64-none-linux-gnu -fast-isel -mattr=+no-bti-at-return-twice < %s | \
; RUN: FileCheck %s --check-prefix=NOBTI
; C source
; --------
; extern int setjmp(ptr);
; extern void notsetjmp(void);
;
; void bbb(void) {
; setjmp(0);
; setjmp(0); // With the attributes removed.
; int (*fnptr)(ptr) = setjmp;
; fnptr(0); // With attributes added.
; notsetjmp();
; }
define void @bbb() #1 {
; BTI-LABEL: bbb:
; BTI: bl setjmp
; BTI-NEXT: hint #36
; BTI: bl setjmp
; BTI-NEXT: hint #36
; BTI: blr x{{[0-9]+}}
; BTI-NEXT: hint #36
; BTI: bl notsetjmp
; BTI-NOT: hint #36
; BTISLS-LABEL: bbb:
; BTISLS: bl setjmp
; BTISLS-NEXT: hint #36
; BTISLS: bl setjmp
; BTISLS-NEXT: hint #36
; BTISLS: bl __llvm_slsblr_thunk_x{{[0-9]+}}
; BTISLS-NEXT: hint #36
; BTISLS: bl notsetjmp
; BTISLS-NOT: hint #36
; NOBTI-LABEL: bbb:
; NOBTI: bl setjmp
; NOBTI-NOT: hint #36
; NOBTI: bl setjmp
; NOBTI-NOT: hint #36
; NOBTI: blr x{{[0-9]+}}
; NOBTI-NOT: hint #36
; NOBTI: bl notsetjmp
; NOBTI-NOT: hint #36
entry:
%fnptr = alloca ptr, align 8
; The frontend may apply attributes to the call, but it doesn't have to. We
; should be looking at the call base, which looks past that to the called function.
%call = call i32 @setjmp(ptr noundef null) #0
%call1 = call i32 @setjmp(ptr noundef null)
store ptr @setjmp, ptr %fnptr, align 8
%0 = load ptr, ptr %fnptr, align 8
; Clang does not attach the attribute here but if it did, it should work.
%call2 = call i32 %0(ptr noundef null) #0
call void @notsetjmp()
ret void
}
declare i32 @setjmp(ptr noundef) #0
declare void @notsetjmp()
attributes #0 = { returns_twice }
attributes #1 = { "branch-target-enforcement" }