forked from OSchip/llvm-project
107 lines
3.2 KiB
C++
107 lines
3.2 KiB
C++
// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -O0 %s -o - 2>&1 -std=c++11 | FileCheck %s
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namespace templates {
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void *my_malloc(int N) __attribute__((alloc_size(1)));
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void *my_calloc(int N, int M) __attribute__((alloc_size(1, 2)));
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struct MyType {
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int arr[4];
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};
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template <typename T> int callMalloc();
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template <typename T, int N> int callCalloc();
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// CHECK-LABEL: define i32 @_ZN9templates6testItEv()
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int testIt() {
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// CHECK: call i32 @_ZN9templates10callMallocINS_6MyTypeEEEiv
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// CHECK: call i32 @_ZN9templates10callCallocINS_6MyTypeELi4EEEiv
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return callMalloc<MyType>() + callCalloc<MyType, 4>();
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}
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// CHECK-LABEL: define linkonce_odr i32
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// @_ZN9templates10callMallocINS_6MyTypeEEEiv
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template <typename T> int callMalloc() {
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static_assert(sizeof(T) == 16, "");
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// CHECK: ret i32 16
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return __builtin_object_size(my_malloc(sizeof(T)), 0);
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}
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// CHECK-LABEL: define linkonce_odr i32
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// @_ZN9templates10callCallocINS_6MyTypeELi4EEEiv
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template <typename T, int N> int callCalloc() {
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static_assert(sizeof(T) * N == 64, "");
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// CHECK: ret i32 64
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return __builtin_object_size(my_malloc(sizeof(T) * N), 0);
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}
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}
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namespace templated_alloc_size {
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using size_t = unsigned long;
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// We don't need bodies for any of these, because they're only used in
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// __builtin_object_size, and that shouldn't need anything but a function
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// decl with alloc_size on it.
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template <typename T>
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T *my_malloc(size_t N = sizeof(T)) __attribute__((alloc_size(1)));
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template <typename T>
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T *my_calloc(size_t M, size_t N = sizeof(T)) __attribute__((alloc_size(2, 1)));
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template <size_t N>
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void *dependent_malloc(size_t NT = N) __attribute__((alloc_size(1)));
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template <size_t N, size_t M>
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void *dependent_calloc(size_t NT = N, size_t MT = M)
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__attribute__((alloc_size(1, 2)));
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template <typename T, size_t M>
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void *dependent_calloc2(size_t NT = sizeof(T), size_t MT = M)
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__attribute__((alloc_size(1, 2)));
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// CHECK-LABEL: define i32 @_ZN20templated_alloc_size6testItEv
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int testIt() {
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// 122 = 4 + 5*4 + 6 + 7*8 + 4*9
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// CHECK: ret i32 122
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return __builtin_object_size(my_malloc<int>(), 0) +
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__builtin_object_size(my_calloc<int>(5), 0) +
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__builtin_object_size(dependent_malloc<6>(), 0) +
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__builtin_object_size(dependent_calloc<7, 8>(), 0) +
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__builtin_object_size(dependent_calloc2<int, 9>(), 0);
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}
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} // namespace templated_alloc_size
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// Be sure that an ExprWithCleanups doesn't deter us.
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namespace alloc_size_with_cleanups {
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struct Foo {
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~Foo();
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};
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void *my_malloc(const Foo &, int N) __attribute__((alloc_size(2)));
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// CHECK-LABEL: define i32 @_ZN24alloc_size_with_cleanups6testItEv
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int testIt() {
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int *const p = (int *)my_malloc(Foo{}, 3);
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// CHECK: ret i32 3
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return __builtin_object_size(p, 0);
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}
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} // namespace alloc_size_with_cleanups
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class C {
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public:
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void *my_malloc(int N) __attribute__((alloc_size(2)));
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void *my_calloc(int N, int M) __attribute__((alloc_size(2, 3)));
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};
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// CHECK-LABEL: define i32 @_Z16callMemberMallocv
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int callMemberMalloc() {
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// CHECK: ret i32 16
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return __builtin_object_size(C().my_malloc(16), 0);
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}
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// CHECK-LABEL: define i32 @_Z16callMemberCallocv
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int callMemberCalloc() {
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// CHECK: ret i32 32
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return __builtin_object_size(C().my_calloc(16, 2), 0);
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}
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