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[dynarmic] disable xmm spills

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Signed-off-by: lizzie <lizzie@eden-emu.dev>
This commit is contained in:
lizzie 2025-08-04 21:54:18 +01:00 • committed by crueter
parent a563d9abbf
commit 343929c8e2
1 changed files with 5 additions and 4 deletions
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9
src/dynarmic/src/dynarmic/backend/x64/reg_alloc.cpp
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@ -527,8 +527,10 @@ void RegAlloc::Move(HostLoc to, HostLoc from) noexcept {
ASSERT(bit_width <= HostLocBitWidth(to));
ASSERT_MSG(!LocInfo(from).IsEmpty(), "Mov eliminated");
EmitMove(bit_width, to, from);
LocInfo(to) = std::exchange(LocInfo(from), {});
if (!LocInfo(from).IsEmpty()) {
EmitMove(bit_width, to, from);
LocInfo(to) = std::exchange(LocInfo(from), {});
}
}
void RegAlloc::CopyToScratch(size_t bit_width, HostLoc to, HostLoc from) noexcept {
@ -567,12 +569,11 @@ void RegAlloc::SpillRegister(HostLoc loc) noexcept {
}
HostLoc RegAlloc::FindFreeSpill(bool is_xmm) const noexcept {
#ifdef _WIN32
#if 0
// TODO(lizzie): Ok, Windows hates XMM spills, this means less perf for windows
// but it's fine anyways. We can find other ways to cheat it later - but which?!?!
// we should NOT save xmm each block entering... MAYBE xbyak has a bug on start/end?
// TODO(lizzie): This needs to be investigated further later.
#else
// Do not spill XMM into other XMM silly
if (!is_xmm) {
// TODO(lizzie): Using lower (xmm0 and such) registers results in issues/crashes - INVESTIGATE WHY