26 lines
1.2 KiB
LLVM
26 lines
1.2 KiB
LLVM
; RUN: opt -S -passes=kcfi %s | FileCheck --check-prefixes=CHECK,NOARM %s
|
|
; RUN: %if arm-registered-target %{ opt -S -passes=kcfi -mtriple=thumbv7m-unknown-linux-gnu %s | FileCheck --check-prefixes=CHECK,ARM %s %}
|
|
|
|
; CHECK-LABEL: define void @f1(
|
|
define void @f1(ptr noundef %x) {
|
|
; ARM: %[[#FINT:]] = ptrtoint ptr %x to i32
|
|
; ARM-NEXT: %[[#FAND:]] = and i32 %[[#FINT]], -2
|
|
; ARM-NEXT: %[[#FPTR:]] = inttoptr i32 %[[#FAND]] to ptr
|
|
; ARM-NEXT: %[[#GEPI:]] = getelementptr inbounds i32, ptr %[[#FPTR]], i32 -1
|
|
; NOARM: %[[#GEPI:]] = getelementptr inbounds i32, ptr %x, i32 -1
|
|
; CHECK-NEXT: %[[#LOAD:]] = load i32, ptr %[[#GEPI]], align 4
|
|
; CHECK-NEXT: %[[#ICMP:]] = icmp ne i32 %[[#LOAD]], 12345678
|
|
; CHECK-NEXT: br i1 %[[#ICMP]], label %[[#TRAP:]], label %[[#CALL:]], !prof ![[#WEIGHTS:]]
|
|
; CHECK: [[#TRAP]]:
|
|
; CHECK-NEXT: call void @llvm.debugtrap()
|
|
; CHECK-NEXT: br label %[[#CALL]]
|
|
; CHECK: [[#CALL]]:
|
|
; CHECK-NEXT: call void %x()
|
|
; CHECK-NOT: [ "kcfi"(i32 12345678) ]
|
|
call void %x() [ "kcfi"(i32 12345678) ]
|
|
ret void
|
|
}
|
|
|
|
!llvm.module.flags = !{!0}
|
|
!0 = !{i32 4, !"kcfi", i32 1}
|
|
; CHECK: ![[#WEIGHTS]] = !{!"branch_weights", i32 1, i32 1048575}
|