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[HIP] Add support functions for C++ polymorphic types 

Add runtime functions to detect invalid calls to pure or deleted virtual
functions.

Patch by: Siu Chi Chan

Reviewed by: Yaxun Liu

Differential Revision: https://reviews.llvm.org/D104392
This commit is contained in:
Yaxun (Sam) Liu 2021-06-18 16:39:41 -04:00
parent c02160c17b
commit 186f2ac612
2 changed files with 40 additions and 0 deletions
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17
clang/lib/Headers/__clang_hip_runtime_wrapper.h
View File

@ -51,6 +51,23 @@ typedef __SIZE_TYPE__ size_t;
#define nullptr NULL;
#endif
#ifdef __cplusplus
extern "C" {
__attribute__((__visibility__("default")))
__attribute__((weak))
__attribute__((noreturn))
__device__ void __cxa_pure_virtual(void) {
__builtin_trap();
}
__attribute__((__visibility__("default")))
__attribute__((weak))
__attribute__((noreturn))
__device__ void __cxa_deleted_virtual(void) {
__builtin_trap();
}
}
#endif //__cplusplus
#if __HIP_ENABLE_DEVICE_MALLOC__
extern "C" __device__ void *__hip_malloc(size_t __size);
extern "C" __device__ void *__hip_free(void *__ptr);

23
clang/test/Headers/hip-header.hip
View File

@ -14,6 +14,29 @@
// expected-no-diagnostics
// Check support for pure and deleted virtual functions
struct base {
__host__
__device__
virtual void pv() = 0;
__host__
__device__
virtual void dv() = delete;
};
struct derived:base {
__host__
__device__
virtual void pv() override {};
};
__device__ void test_vf() {
derived d;
}
// CHECK: @_ZTV7derived = linkonce_odr unnamed_addr addrspace(1) constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* null, i8* bitcast (void (%struct.derived*)* @_ZN7derived2pvEv to i8*), i8* bitcast (void ()* @__cxa_deleted_virtual to i8*)] }, comdat, align 8
// CHECK: @_ZTV4base = linkonce_odr unnamed_addr addrspace(1) constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* null, i8* bitcast (void ()* @__cxa_pure_virtual to i8*), i8* bitcast (void ()* @__cxa_deleted_virtual to i8*)] }, comdat, align 8
// CHECK: define{{.*}}void @__cxa_pure_virtual()
// CHECK: define{{.*}}void @__cxa_deleted_virtual()
struct Number {
__device__ Number(float _x) : x(_x) {}
float x;