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arm64jit: Skip vertexjit prolog/epilog if possible.

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Unknown W. Brackets committed 2023-09-10 23:04:15 -07:00
1 parent 00e691d633
commit 646e3b269d
1 file changed
+12 -7
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GPU/Common/VertexDecoderArm64.cpp
+12 -7
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@@ -149,6 +149,7 @@ JittedVertexDecoder VertexDecoderJitCache::Compile(const VertexDecoder &dec, int
bool prescaleStep = false;
bool skinning = false;
bool updateTexBounds = false;
bool log = false;
@@ -164,6 +165,9 @@ JittedVertexDecoder VertexDecoderJitCache::Compile(const VertexDecoder &dec, int
dec.steps_[i] == &VertexDecoder::Step_WeightsFloatSkin) {
skinning = true;
}
if (dec.steps_[i] == &VertexDecoder::Step_TcU16ThroughToFloat) {
updateTexBounds = true;
}
}
// Not used below, but useful for logging.
@@ -177,10 +181,12 @@ JittedVertexDecoder VertexDecoderJitCache::Compile(const VertexDecoder &dec, int
// GPRs 0-15 do not need to be saved.
// We don't use any higher GPRs than 16. So:
uint64_t regs_to_save = 1 << 16; // Arm64Gen::ALL_CALLEE_SAVED;
uint64_t regs_to_save = updateTexBounds ? 1 << 16 : 0;
// We only need to save Q8-Q15 if skinning is used.
uint64_t regs_to_save_fp = dec.skinInDecode ? Arm64Gen::ALL_CALLEE_SAVED_FP : 0;
fp.ABI_PushRegisters(regs_to_save, regs_to_save_fp);
// Only bother making stack space and setting up FP if there are saved regs.
if (regs_to_save || regs_to_save_fp)
fp.ABI_PushRegisters(regs_to_save, regs_to_save_fp);
// Keep the scale/offset in a few fp registers if we need it.
if (prescaleStep) {
@@ -240,8 +246,7 @@ JittedVertexDecoder VertexDecoderJitCache::Compile(const VertexDecoder &dec, int
MOVI2R(alphaNonFullReg, 0);
}
if (dec.tc && dec.throughmode) {
// TODO: Smarter, only when doing bounds.
if (updateTexBounds) {
MOVP2R(scratchReg64, &gstate_c.vertBounds.minU);
LDRH(INDEX_UNSIGNED, boundsMinUReg, scratchReg64, offsetof(KnownVertexBounds, minU));
LDRH(INDEX_UNSIGNED, boundsMaxUReg, scratchReg64, offsetof(KnownVertexBounds, maxU));
@@ -274,8 +279,7 @@ JittedVertexDecoder VertexDecoderJitCache::Compile(const VertexDecoder &dec, int
SetJumpTarget(skip);
}
if (dec.tc && dec.throughmode) {
// TODO: Smarter, only when doing bounds.
if (updateTexBounds) {
MOVP2R(scratchReg64, &gstate_c.vertBounds.minU);
STRH(INDEX_UNSIGNED, boundsMinUReg, scratchReg64, offsetof(KnownVertexBounds, minU));
STRH(INDEX_UNSIGNED, boundsMaxUReg, scratchReg64, offsetof(KnownVertexBounds, maxU));
@@ -283,7 +287,8 @@ JittedVertexDecoder VertexDecoderJitCache::Compile(const VertexDecoder &dec, int
STRH(INDEX_UNSIGNED, boundsMaxVReg, scratchReg64, offsetof(KnownVertexBounds, maxV));
}
fp.ABI_PopRegisters(regs_to_save, regs_to_save_fp);
if (regs_to_save || regs_to_save_fp)
fp.ABI_PopRegisters(regs_to_save, regs_to_save_fp);
RET();