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//===------------ target_impl.h - NVPTX OpenMP GPU options ------- CUDA -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Definitions of target specific functions
//
//===----------------------------------------------------------------------===//
#ifndef _TARGET_IMPL_H_
#define _TARGET_IMPL_H_
#include <stdint.h>
#include "option.h"
INLINE void __kmpc_impl_unpack(int64_t val, int32_t &lo, int32_t &hi) {
asm volatile("mov.b64 {%0,%1}, %2;" : "=r"(lo), "=r"(hi) : "l"(val));
}
INLINE int64_t __kmpc_impl_pack(int32_t lo, int32_t hi) {
int64_t val;
asm volatile("mov.b64 %0, {%1,%2};" : "=l"(val) : "r"(lo), "r"(hi));
return val;
}
typedef uint32_t __kmpc_impl_lanemask_t;
INLINE __kmpc_impl_lanemask_t __kmpc_impl_lanemask_lt() {
__kmpc_impl_lanemask_t res;
asm("mov.u32 %0, %%lanemask_lt;" : "=r"(res));
return res;
}
INLINE int __kmpc_impl_ffs(uint32_t x) { return __ffs(x); }
INLINE int __kmpc_impl_popc(uint32_t x) { return __popc(x); }
#ifndef CUDA_VERSION
#error CUDA_VERSION macro is undefined, something wrong with cuda.
#endif
// In Cuda 9.0, the *_sync() version takes an extra argument 'mask'.
INLINE int32_t __kmpc_impl_shfl_sync(__kmpc_impl_lanemask_t Mask, int32_t Var,
int32_t SrcLane) {
#if CUDA_VERSION >= 9000
return __shfl_sync(Mask, Var, SrcLane);
#else
return __shfl(Var, SrcLane);
#endif // CUDA_VERSION
}
INLINE void __kmpc_impl_syncwarp(int32_t Mask) { __SYNCWARP(Mask); }
#endif