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 %} 3 4; CHECK-LABEL: define void @f1( 5define 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:]] 14 ; CHECK: [[#TRAP]]: 15 ; CHECK-NEXT: call void @llvm.debugtrap() 16 ; CHECK-NEXT: br label %[[#CALL]] 17 ; CHECK: [[#CALL]]: 18 ; CHECK-NEXT: call void %x() 19 ; CHECK-NOT: [ "kcfi"(i32 12345678) ] 20 call void %x() [ "kcfi"(i32 12345678) ] 21 ret void 22} 23 24!llvm.module.flags = !{!0} 25!0 = !{i32 4, !"kcfi", i32 1} 26; CHECK: ![[#WEIGHTS]] = !{!"branch_weights", i32 1, i32 1048575} 27