Add more codegen tests.

Author: ahmedbougacha

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

@@ -3,19 +3,31 @@
 
 extern int external;
 
-// CHECK: @ptr1 = global ptr ptrauth (ptr @external, i32 0, i64 26)
-void *ptr1 = __builtin_ptrauth_sign_constant(&external, 0, 26);
+// CHECK: @ptr1 = global ptr ptrauth (ptr @external, i32 0)
+void *ptr1 = __builtin_ptrauth_sign_constant(&external, 0, 0);
 
-// CHECK: @ptr2 = global ptr ptrauth (ptr @external, i32 2, i64 26, ptr @ptr2)
-void *ptr2 = __builtin_ptrauth_sign_constant(&external, 2, __builtin_ptrauth_blend_discriminator(&ptr2, 26));
+// CHECK: @ptr2 = global ptr ptrauth (ptr @external, i32 0, i64 1234)
+void *ptr2 = __builtin_ptrauth_sign_constant(&external, 0, 1234);
 
-// CHECK: @ptr3 = global ptr null
-void *ptr3;
+// CHECK: @ptr3 = global ptr ptrauth (ptr @external, i32 2, i64 0, ptr @ptr3)
+void *ptr3 = __builtin_ptrauth_sign_constant(&external, 2, &ptr3);
+
+// CHECK: @ptr4 = global ptr ptrauth (ptr @external, i32 2, i64 26, ptr @ptr4)
+void *ptr4 = __builtin_ptrauth_sign_constant(&external, 2, __builtin_ptrauth_blend_discriminator(&ptr4, 26));
+
+// CHECK: @ptr5 = global ptr null
+void *ptr5;
 
 void test_sign_constant_code() {
 // CHECK-LABEL: define {{.*}}void @test_sign_constant_code()
 // CHECK-NEXT:  entry:
-// CHECK-NEXT:    store ptr ptrauth (ptr @external, i32 2, i64 1234), ptr @ptr3, align 8
+// CHECK-NEXT:    store ptr ptrauth (ptr @external, i32 0), ptr @ptr1, align 8
+// CHECK-NEXT:    store ptr ptrauth (ptr @external, i32 2, i64 1234), ptr @ptr2, align 8
+// CHECK-NEXT:    store ptr ptrauth (ptr @external, i32 2, i64 0, ptr @ptr3), ptr @ptr3, align 8
+// CHECK-NEXT:    store ptr ptrauth (ptr @external, i32 2, i64 1234, ptr @ptr4), ptr @ptr4, align 8
 // CHECK-NEXT:    ret void
-  ptr3 = __builtin_ptrauth_sign_constant(&external, 2, 1234);
+  ptr1 = __builtin_ptrauth_sign_constant(&external, 0, 0);
+  ptr2 = __builtin_ptrauth_sign_constant(&external, 2, 1234);
+  ptr3 = __builtin_ptrauth_sign_constant(&external, 2, &ptr3);
+  ptr4 = __builtin_ptrauth_sign_constant(&external, 2, __builtin_ptrauth_blend_discriminator(&ptr4, 1234));
 }