| ; 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=+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(void*); |
| ; extern void notsetjmp(void); |
| ; |
| ; void bbb(void) { |
| ; setjmp(0); |
| ; int (*fnptr)(void*) = setjmp; |
| ; fnptr(0); |
| ; notsetjmp(); |
| ; } |
| |
| define void @bbb() { |
| ; BTI-LABEL: bbb: |
| ; BTI: bl setjmp |
| ; BTI-NEXT: hint #36 |
| ; BTI: blr x{{[0-9]+}} |
| ; BTI-NEXT: hint #36 |
| ; BTI: bl notsetjmp |
| ; BTI-NOT: hint #36 |
| |
| ; NOBTI-LABEL: bbb: |
| ; 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 i32 (i8*)*, align 8 |
| %call = call i32 @setjmp(i8* noundef null) #0 |
| store i32 (i8*)* @setjmp, i32 (i8*)** %fnptr, align 8 |
| %0 = load i32 (i8*)*, i32 (i8*)** %fnptr, align 8 |
| %call1 = call i32 %0(i8* noundef null) #0 |
| call void @notsetjmp() |
| ret void |
| } |
| |
| declare i32 @setjmp(i8* noundef) #0 |
| declare void @notsetjmp() |
| |
| attributes #0 = { returns_twice } |
| |
| !llvm.module.flags = !{!0} |
| !0 = !{i32 8, !"branch-target-enforcement", i32 1} |