// RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all | FileCheck %s --check-prefixes=CHECK,GNU,64
// RUN: %clang_cc1 -triple x86_64-pc-windows-msvc -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all | FileCheck %s --check-prefixes=CHECK,MSVC,64
// RUN: %clang_cc1 -triple aarch64-linux-gnu -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all | FileCheck %s --check-prefixes=CHECK,GNU,64
// RUN: %clang_cc1 -triple aarch64_be-linux-gnu -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all | FileCheck %s --check-prefixes=CHECK,GNU,64
// RUN: %clang_cc1 -triple arm-none-eabi -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all | FileCheck %s --check-prefixes=CHECK,ARM,GNU,32

// RUN: %clang_cc1 -triple arm64e-apple-ios  -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all -fptrauth-calls | FileCheck %s --check-prefixes=CHECK,GNU,64,AUTH
// RUN: %clang_cc1 -triple aarch64-linux-gnu -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all -fptrauth-calls | FileCheck %s --check-prefixes=CHECK,GNU,64,AUTH

// GNU:  define{{.*}} void @_Z3funv() #0 !func_sanitize ![[FUNCSAN:.*]] {
// MSVC: define{{.*}} void @"?fun@@YAXXZ"() #0 !func_sanitize ![[FUNCSAN:.*]] {
void fun() {}

// GNU-LABEL:  define{{.*}} void @_Z6callerPFvvE(ptr noundef %f)
// MSVC-LABEL: define{{.*}} void @"?caller@@YAXP6AXXZ@Z"(ptr noundef %f)
// ARM:   call ptr @llvm.ptrmask.p0.i32(ptr {{.*}}, i32 -2), !nosanitize !6
// AUTH:  %[[STRIPPED:.*]] = ptrtoint ptr {{.*}} to i64, !nosanitize
// AUTH:  call i64 @llvm.ptrauth.auth(i64 %[[STRIPPED]], i32 0, i64 0), !nosanitize
// CHECK: getelementptr <{ i32, i32 }>, ptr {{.*}}, i32 -1, i32 0, !nosanitize
// CHECK: load i32, ptr {{.*}}, align {{.*}}, !nosanitize
// CHECK: icmp eq i32 {{.*}}, -1056584962, !nosanitize
// CHECK: br i1 {{.*}}, label %[[LABEL1:.*]], label %[[LABEL4:.*]], !nosanitize
// CHECK: [[LABEL1]]:
// CHECK: getelementptr <{ i32, i32 }>, ptr {{.*}}, i32 -1, i32 1, !nosanitize
// CHECK: load i32, ptr {{.*}}, align {{.*}}, !nosanitize
// GNU:   icmp eq i32 {{.*}}, 905068220, !nosanitize
// MSVC:  icmp eq i32 {{.*}}, -1600339357, !nosanitize
// CHECK: br i1 {{.*}}, label %[[LABEL3:.*]], label %[[LABEL2:[^,]*]], {{.*}}!nosanitize
// CHECK: [[LABEL2]]:
// 64:    call void @__ubsan_handle_function_type_mismatch_abort(ptr @[[#]], i64 %[[#]]) #[[#]], !nosanitize
// 32:    call void @__ubsan_handle_function_type_mismatch_abort(ptr @[[#]], i32 %[[#]]) #[[#]], !nosanitize
// CHECK-NEXT: unreachable, !nosanitize
// CHECK-EMPTY:
// CHECK-NEXT: [[LABEL3]]:
// CHECK: br label %[[LABEL4]], !nosanitize
// CHECK-EMPTY:
// CHECK-NEXT: [[LABEL4]]:
// CHECK-NEXT:   call void
// CHECK-NEXT:   ret void
void caller(void (*f)()) { f(); }

// GNU:  define{{.*}} void @_Z4fun2v() #0 {
// MSVC: define{{.*}} void @"?fun2@@YAXXZ"() #0 {
[[clang::cfi_unchecked_callee]]
void fun2() {}

typedef void (*unchecked_t)() [[clang::cfi_unchecked_callee]];

// GNU-LABEL:  define{{.*}} void @_Z7caller2PFvvE(ptr noundef %f)
// MSVC-LABEL: define{{.*}} void @"?caller2@@YAXP6AXXZ@Z"(ptr noundef %f)
// CHECK-NEXT: entry:
// CHECK-NEXT:   [[ADDR:%.*]] = alloca ptr
// CHECK-NEXT:   store ptr %f, ptr [[ADDR]]
// CHECK-NEXT:   [[FUNC:%.*]] = load ptr, ptr [[ADDR]]
// CHECK-NEXT:   call void [[FUNC]]()
// CHECK-NEXT:   ret void
void caller2(unchecked_t f) { f(); }

// GNU:  ![[FUNCSAN]] = !{i32 -1056584962, i32 905068220}
// MSVC: ![[FUNCSAN]] = !{i32 -1056584962, i32 -1600339357}