clang/test/CodeGen/ptrauth-intrinsic-sign-constant.c

   1 // RUN: %clang_cc1 -triple arm64-apple-ios -fptrauth-intrinsics -emit-llvm %s  -o - | FileCheck %s
   2 // RUN: %clang_cc1 -triple aarch64-elf     -fptrauth-intrinsics -emit-llvm %s  -o - | FileCheck %s
   3
   4 extern int external;
   5
   6 // CHECK: @ptr1 = global ptr ptrauth (ptr @external, i32 0)
   7 void *ptr1 = __builtin_ptrauth_sign_constant(&external, 0, 0);
   8
   9 // CHECK: @ptr2 = global ptr ptrauth (ptr @external, i32 0, i64 1234)
  10 void *ptr2 = __builtin_ptrauth_sign_constant(&external, 0, 1234);
  11
  12 // CHECK: @ptr3 = global ptr ptrauth (ptr @external, i32 2, i64 0, ptr @ptr3)
  13 void *ptr3 = __builtin_ptrauth_sign_constant(&external, 2, &ptr3);
  14
  15 // CHECK: @ptr4 = global ptr ptrauth (ptr @external, i32 2, i64 26, ptr @ptr4)
  16 void *ptr4 = __builtin_ptrauth_sign_constant(&external, 2, __builtin_ptrauth_blend_discriminator(&ptr4, 26));
  17
  18 // CHECK: @ptr5 = global ptr null
  19 void *ptr5;
  20
  21 void test_sign_constant_code() {
  22 // CHECK-LABEL: define {{.*}}void @test_sign_constant_code()
  23 // CHECK-NEXT:  entry:
  24 // CHECK-NEXT:    store ptr ptrauth (ptr @external, i32 0), ptr @ptr1, align 8
  25 // CHECK-NEXT:    store ptr ptrauth (ptr @external, i32 2, i64 1234), ptr @ptr2, align 8
  26 // CHECK-NEXT:    store ptr ptrauth (ptr @external, i32 2, i64 0, ptr @ptr3), ptr @ptr3, align 8
  27 // CHECK-NEXT:    store ptr ptrauth (ptr @external, i32 2, i64 1234, ptr @ptr4), ptr @ptr4, align 8
  28 // CHECK-NEXT:    ret void
  29   ptr1 = __builtin_ptrauth_sign_constant(&external, 0, 0);
  30   ptr2 = __builtin_ptrauth_sign_constant(&external, 2, 1234);
  31   ptr3 = __builtin_ptrauth_sign_constant(&external, 2, &ptr3);
  32   ptr4 = __builtin_ptrauth_sign_constant(&external, 2, __builtin_ptrauth_blend_discriminator(&ptr4, 1234));
  33 }