| George Burgess IV | b40cd56 | 2015-09-04 22:36:18 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - %s | FileCheck %s |
| 2 | |
| 3 | // C++-specific tests for __builtin_object_size |
| 4 | |
| 5 | int gi; |
| 6 | |
| 7 | // CHECK-LABEL: define void @_Z5test1v() |
| 8 | void test1() { |
| 9 | // Guaranteeing that our cast removal logic doesn't break more interesting |
| 10 | // cases. |
| 11 | struct A { int a; }; |
| 12 | struct B { int b; }; |
| 13 | struct C: public A, public B {}; |
| 14 | |
| 15 | C c; |
| 16 | |
| 17 | // CHECK: store i32 8 |
| 18 | gi = __builtin_object_size(&c, 0); |
| 19 | // CHECK: store i32 8 |
| 20 | gi = __builtin_object_size((A*)&c, 0); |
| 21 | // CHECK: store i32 4 |
| 22 | gi = __builtin_object_size((B*)&c, 0); |
| 23 | |
| 24 | // CHECK: store i32 8 |
| 25 | gi = __builtin_object_size((char*)&c, 0); |
| 26 | // CHECK: store i32 8 |
| 27 | gi = __builtin_object_size((char*)(A*)&c, 0); |
| 28 | // CHECK: store i32 4 |
| 29 | gi = __builtin_object_size((char*)(B*)&c, 0); |
| 30 | } |
| George Burgess IV | a51c407 | 2015-10-16 01:49:01 +0000 | [diff] [blame] | 31 | |
| 32 | // CHECK-LABEL: define void @_Z5test2v() |
| 33 | void test2() { |
| 34 | struct A { char buf[16]; }; |
| 35 | struct B : A {}; |
| 36 | struct C { int i; B bs[1]; } *c; |
| 37 | |
| 38 | // CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false) |
| 39 | gi = __builtin_object_size(&c->bs[0], 0); |
| 40 | // CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false) |
| 41 | gi = __builtin_object_size(&c->bs[0], 1); |
| 42 | // CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true) |
| 43 | gi = __builtin_object_size(&c->bs[0], 2); |
| 44 | // CHECK: store i32 16 |
| 45 | gi = __builtin_object_size(&c->bs[0], 3); |
| 46 | |
| 47 | // CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false) |
| 48 | gi = __builtin_object_size((A*)&c->bs[0], 0); |
| 49 | // CHECK: store i32 16 |
| 50 | gi = __builtin_object_size((A*)&c->bs[0], 1); |
| 51 | // CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true) |
| 52 | gi = __builtin_object_size((A*)&c->bs[0], 2); |
| 53 | // CHECK: store i32 16 |
| 54 | gi = __builtin_object_size((A*)&c->bs[0], 3); |
| 55 | |
| 56 | // CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false) |
| 57 | gi = __builtin_object_size(&c->bs[0].buf[0], 0); |
| 58 | // CHECK: store i32 16 |
| 59 | gi = __builtin_object_size(&c->bs[0].buf[0], 1); |
| 60 | // CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true) |
| 61 | gi = __builtin_object_size(&c->bs[0].buf[0], 2); |
| 62 | // CHECK: store i32 16 |
| 63 | gi = __builtin_object_size(&c->bs[0].buf[0], 3); |
| 64 | } |