| ; 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} |
