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ome guest function calls can now be resolved and embedded directly in

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the emitted asm as rel32 calls. Disabled by default, enabled via
resolve_rel32_guest_calls
detect whether cpu has fast jrcxz, fast loop/loope/loopne
much more thorough LoadConstantXMM
New cvar elide_e0_check that allows the backend to assume accesses via
the SP or TLS register will not cross into 0xe0 range
Add x64 codegen for Vector shift uint8
If has fast jrcxz use for some traptrue/breaktrue instructions
Use phat nops
Add cvar use_fast_dot_product, which uses a four instruction sequence
for both dot product instructions which ought to be equivalent. disabled
by default.
This commit is contained in:
chss95cs@gmail.com
2022-06-20 15:08:18 -07:00
parent a4ff64c465
commit 549ee28a93
6 changed files with 583 additions and 95 deletions
Download Patch File Download Diff File Expand all files Collapse all files

100
src/xenia/cpu/backend/x64/x64_seq_vector.cc
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@@ -728,28 +728,103 @@ struct VECTOR_SHL_V128
}
}
static void EmitInt8(X64Emitter& e, const EmitArgType& i) {
static void EmitInt8(X64Emitter& e, const EmitArgType& i) {
// TODO(benvanik): native version (with shift magic).
if (i.src2.is_constant) {
if (e.IsFeatureEnabled(kX64EmitGFNI)) {
const auto& shamt = i.src2.constant();
if (e.IsFeatureEnabled(kX64EmitAVX2)) {
if (!i.src2.is_constant) {
// get high 8 bytes
e.vpunpckhqdq(e.xmm1, i.src1, i.src1);
e.vpunpckhqdq(e.xmm3, i.src2, i.src2);
e.vpmovzxbd(e.ymm0, i.src1);
e.vpmovzxbd(e.ymm1, e.xmm1);
e.vpmovzxbd(e.ymm2, i.src2);
e.vpmovzxbd(e.ymm3, e.xmm3);
e.vpsllvd(e.ymm0, e.ymm0, e.ymm2);
e.vpsllvd(e.ymm1, e.ymm1, e.ymm3);
e.vextracti128(e.xmm2, e.ymm0, 1);
e.vextracti128(e.xmm3, e.ymm1, 1);
e.vpshufb(e.xmm0, e.xmm0, e.GetXmmConstPtr(XMMIntsToBytes));
e.vpshufb(e.xmm1, e.xmm1, e.GetXmmConstPtr(XMMIntsToBytes));
e.vpshufb(e.xmm2, e.xmm2, e.GetXmmConstPtr(XMMIntsToBytes));
e.vpshufb(e.xmm3, e.xmm3, e.GetXmmConstPtr(XMMIntsToBytes));
e.vpunpckldq(e.xmm0, e.xmm0, e.xmm1);
e.vpunpckldq(e.xmm2, e.xmm2, e.xmm3);
e.vpunpcklqdq(i.dest, e.xmm0, e.xmm2);
return;
} else {
vec128_t constmask = i.src2.constant();
for (unsigned i = 0; i < 16; ++i) {
constmask.u8[i] &= 7;
}
unsigned seenvalue = constmask.u8[0];
bool all_same = true;
for (size_t n = 0; n < 16 - n; ++n) {
if (shamt.u8[n] != shamt.u8[n + 1]) {
for (unsigned i = 1; i < 16; ++i) {
if (constmask.u8[i] != seenvalue) {
all_same = false;
break;
}
}
if (all_same) {
// Every count is the same, so we can use gf2p8affineqb.
const uint8_t shift_amount = shamt.u8[0] & 0b111;
const uint64_t shift_matrix =
UINT64_C(0x0102040810204080) >> (shift_amount * 8);
e.vgf2p8affineqb(i.dest, i.src1,
e.StashConstantXmm(0, vec128q(shift_matrix)), 0);
// mul by two
/*if (seenvalue == 1) {
e.vpaddb(i.dest, i.src1, i.src1);
} else if (seenvalue == 2) {
e.vpaddb(i.dest, i.src1, i.src1);
e.vpaddb(i.dest, i.dest, i.dest);
} else if (seenvalue == 3) {
// mul by 8
e.vpaddb(i.dest, i.src1, i.src1);
e.vpaddb(i.dest, i.dest, i.dest);
e.vpaddb(i.dest, i.dest, i.dest);
} else*/
{
e.vpmovzxbw(e.ymm0, i.src1);
e.vpsllw(e.ymm0, e.ymm0, seenvalue);
e.vextracti128(e.xmm1, e.ymm0, 1);
e.vpshufb(e.xmm0, e.xmm0, e.GetXmmConstPtr(XMMShortsToBytes));
e.vpshufb(e.xmm1, e.xmm1, e.GetXmmConstPtr(XMMShortsToBytes));
e.vpunpcklqdq(i.dest, e.xmm0, e.xmm1);
return;
}
} else {
e.LoadConstantXmm(e.xmm2, constmask);
e.vpunpckhqdq(e.xmm1, i.src1, i.src1);
e.vpunpckhqdq(e.xmm3, e.xmm2, e.xmm2);
e.vpmovzxbd(e.ymm0, i.src1);
e.vpmovzxbd(e.ymm1, e.xmm1);
e.vpmovzxbd(e.ymm2, e.xmm2);
e.vpmovzxbd(e.ymm3, e.xmm3);
e.vpsllvd(e.ymm0, e.ymm0, e.ymm2);
e.vpsllvd(e.ymm1, e.ymm1, e.ymm3);
e.vextracti128(e.xmm2, e.ymm0, 1);
e.vextracti128(e.xmm3, e.ymm1, 1);
e.vpshufb(e.xmm0, e.xmm0, e.GetXmmConstPtr(XMMIntsToBytes));
e.vpshufb(e.xmm1, e.xmm1, e.GetXmmConstPtr(XMMIntsToBytes));
e.vpshufb(e.xmm2, e.xmm2, e.GetXmmConstPtr(XMMIntsToBytes));
e.vpshufb(e.xmm3, e.xmm3, e.GetXmmConstPtr(XMMIntsToBytes));
e.vpunpckldq(e.xmm0, e.xmm0, e.xmm1);
e.vpunpckldq(e.xmm2, e.xmm2, e.xmm3);
e.vpunpcklqdq(i.dest, e.xmm0, e.xmm2);
return;
}
}
}
if (i.src2.is_constant) {
e.lea(e.GetNativeParam(1), e.StashConstantXmm(1, i.src2.constant()));
} else {
e.lea(e.GetNativeParam(1), e.StashXmm(1, i.src2));
@@ -758,7 +833,6 @@ struct VECTOR_SHL_V128
e.CallNativeSafe(reinterpret_cast<void*>(EmulateVectorShl<uint8_t>));
e.vmovaps(i.dest, e.xmm0);
}
static void EmitInt16(X64Emitter& e, const EmitArgType& i) {
Xmm src1;
if (i.src1.is_constant) {