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atomic.hpp: add some features and optimizations

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Add atomic_t<>::observe() (relaxed load)
Add atomic_fence_XXX() (barrier functions)
Get rid of MFENCE instruction, replace with no-op LOCK OR on stack.
Remove <atomic> dependence from stdafx.h and relevant headers.
This commit is contained in:
Nekotekina 2020-12-06 12:10:00 +03:00
parent 77aa9e58f2
commit b16cc618b5
14 changed files with 171 additions and 60 deletions
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6
rpcs3/Emu/Cell/PPUInterpreter.cpp
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@ -3156,7 +3156,7 @@ bool ppu_interpreter::CRANDC(ppu_thread& ppu, ppu_opcode_t op)
bool ppu_interpreter::ISYNC(ppu_thread& ppu, ppu_opcode_t op)
{
std::atomic_thread_fence(std::memory_order_acquire);
atomic_fence_acquire();
return true;
}
@ -4222,7 +4222,7 @@ bool ppu_interpreter::LFSUX(ppu_thread& ppu, ppu_opcode_t op)
bool ppu_interpreter::SYNC(ppu_thread& ppu, ppu_opcode_t op)
{
std::atomic_thread_fence(std::memory_order_seq_cst);
atomic_fence_seq_cst();
return true;
}
@ -4432,7 +4432,7 @@ bool ppu_interpreter::SRADI(ppu_thread& ppu, ppu_opcode_t op)
bool ppu_interpreter::EIEIO(ppu_thread& ppu, ppu_opcode_t op)
{
std::atomic_thread_fence(std::memory_order_seq_cst);
atomic_fence_seq_cst();
return true;
}