1 ; RUN: opt -S -passes=kcfi %s | FileCheck --check-prefixes=CHECK,NOARM %s
2 ; RUN: %if arm-registered-target %{ opt -S -passes=kcfi -mtriple=thumbv7m-unknown-linux-gnu %s | FileCheck --check-prefixes=CHECK,ARM %s %}
4 ; CHECK-LABEL: define void @f1(
5 define void @f1(ptr noundef %x) {
6 ; ARM: %[[#FINT:]] = ptrtoint ptr %x to i32
7 ; ARM-NEXT: %[[#FAND:]] = and i32 %[[#FINT]], -2
8 ; ARM-NEXT: %[[#FPTR:]] = inttoptr i32 %[[#FAND]] to ptr
9 ; ARM-NEXT: %[[#GEPI:]] = getelementptr inbounds i32, ptr %[[#FPTR]], i32 -1
10 ; NOARM: %[[#GEPI:]] = getelementptr inbounds i32, ptr %x, i32 -1
11 ; CHECK-NEXT: %[[#LOAD:]] = load i32, ptr %[[#GEPI]], align 4
12 ; CHECK-NEXT: %[[#ICMP:]] = icmp ne i32 %[[#LOAD]], 12345678
13 ; CHECK-NEXT: br i1 %[[#ICMP]], label %[[#TRAP:]], label %[[#CALL:]], !prof ![[#WEIGHTS:]]
15 ; CHECK-NEXT: call void @llvm.debugtrap()
16 ; CHECK-NEXT: br label %[[#CALL]]
18 ; CHECK-NEXT: call void %x()
19 ; CHECK-NOT: [ "kcfi"(i32 12345678) ]
20 call void %x() [ "kcfi"(i32 12345678) ]
24 !llvm.module.flags = !{!0}
25 !0 = !{i32 4, !"kcfi", i32 1}
26 ; CHECK: ![[#WEIGHTS]] = !{!"branch_weights", i32 1, i32 1048575}