| 1 | // RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -o - %s | FileCheck %s |
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| 2 | |
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| 3 | // C++-specific tests for __builtin_object_size |
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| 4 | |
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| 5 | int gi; |
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| 6 | |
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| 7 | // CHECK-LABEL: define void @_Z5test1v() |
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| 8 | void test1() { |
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| 9 | // Guaranteeing that our cast removal logic doesn't break more interesting |
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| 10 | // cases. |
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| 11 | struct A { int a; }; |
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| 12 | struct B { int b; }; |
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| 13 | struct C: public A, public B {}; |
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| 14 | |
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| 15 | C c; |
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| 16 | |
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| 17 | // CHECK: store i32 8 |
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| 18 | gi = __builtin_object_size(&c, 0); |
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| 19 | // CHECK: store i32 8 |
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| 20 | gi = __builtin_object_size((A*)&c, 0); |
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| 21 | // CHECK: store i32 4 |
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| 22 | gi = __builtin_object_size((B*)&c, 0); |
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| 23 | |
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| 24 | // CHECK: store i32 8 |
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| 25 | gi = __builtin_object_size((char*)&c, 0); |
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| 26 | // CHECK: store i32 8 |
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| 27 | gi = __builtin_object_size((char*)(A*)&c, 0); |
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| 28 | // CHECK: store i32 4 |
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| 29 | gi = __builtin_object_size((char*)(B*)&c, 0); |
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| 30 | } |
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| 31 | |
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| 32 | // CHECK-LABEL: define void @_Z5test2v() |
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| 33 | void test2() { |
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| 34 | struct A { char buf[16]; }; |
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| 35 | struct B : A {}; |
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| 36 | struct C { int i; B bs[1]; } *c; |
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| 37 | |
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| 38 | // CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true, i1 false) |
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| 39 | gi = __builtin_object_size(&c->bs[0], 0); |
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| 40 | // CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true, i1 false) |
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| 41 | gi = __builtin_object_size(&c->bs[0], 1); |
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| 42 | // CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true, i1 false) |
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| 43 | gi = __builtin_object_size(&c->bs[0], 2); |
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| 44 | // CHECK: store i32 16 |
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| 45 | gi = __builtin_object_size(&c->bs[0], 3); |
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| 46 | |
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| 47 | // CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true, i1 false) |
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| 48 | gi = __builtin_object_size((A*)&c->bs[0], 0); |
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| 49 | // CHECK: store i32 16 |
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| 50 | gi = __builtin_object_size((A*)&c->bs[0], 1); |
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| 51 | // CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true, i1 false) |
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| 52 | gi = __builtin_object_size((A*)&c->bs[0], 2); |
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| 53 | // CHECK: store i32 16 |
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| 54 | gi = __builtin_object_size((A*)&c->bs[0], 3); |
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| 55 | |
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| 56 | // CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 false, i1 true, i1 false) |
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| 57 | gi = __builtin_object_size(&c->bs[0].buf[0], 0); |
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| 58 | // CHECK: store i32 16 |
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| 59 | gi = __builtin_object_size(&c->bs[0].buf[0], 1); |
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| 60 | // CHECK: call i64 @llvm.objectsize.i64.p0i8(i8* %{{.*}}, i1 true, i1 true, i1 false) |
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| 61 | gi = __builtin_object_size(&c->bs[0].buf[0], 2); |
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| 62 | // CHECK: store i32 16 |
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| 63 | gi = __builtin_object_size(&c->bs[0].buf[0], 3); |
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| 64 | } |
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| 65 | |
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