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[libc] Make RPC header work with GCC9

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This commit is contained in:
Joseph Huber
2024-11-25 07:31:35 -06:00
parent b4d49fb52e
commit 0ccc389512
1 changed files with 9 additions and 6 deletions
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15
libc/shared/rpc_util.h
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@@ -17,6 +17,11 @@
#define RPC_TARGET_IS_GPU
#endif
// Workaround for missing __has_builtin in < GCC 10.
#ifndef __has_builtin
#define __has_builtin(x) 0
#endif
#ifndef RPC_INLINE
#define RPC_INLINE inline
#endif
@@ -141,17 +146,15 @@ public:
/// Suspend the thread briefly to assist the thread scheduler during busy loops.
RPC_INLINE void sleep_briefly() {
#if defined(LIBC_TARGET_ARCH_IS_NVPTX)
#if defined(__NVPTX__)
if (__nvvm_reflect("__CUDA_ARCH") >= 700)
asm("nanosleep.u32 64;" ::: "memory");
#elif defined(LIBC_TARGET_ARCH_IS_AMDGPU)
#elif defined(__AMDGPU__)
__builtin_amdgcn_s_sleep(2);
#elif defined(LIBC_TARGET_ARCH_IS_X86)
#elif __has_builtin(__builtin_ia32_pause)
__builtin_ia32_pause();
#elif defined(LIBC_TARGET_ARCH_IS_AARCH64) && __has_builtin(__builtin_arm_isb)
#elif __has_builtin(__builtin_arm_isb)
__builtin_arm_isb(0xf);
#elif defined(LIBC_TARGET_ARCH_IS_AARCH64)
asm volatile("isb\n" ::: "memory");
#else
// Simply do nothing if sleeping isn't supported on this platform.
#endif