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[JIT] Full vctuxs support

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This commit is contained in:
DrChat
2018-03-01 23:49:44 -06:00
parent 4766a5ec24
commit 0577b6c9be
5 changed files with 113 additions and 14 deletions
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1
src/xenia/cpu/backend/x64/x64_emitter.cc
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@@ -677,6 +677,7 @@ static const vec128_t xmm_consts[] = {
/* XMMIntMin */ vec128i(INT_MIN),
/* XMMIntMax */ vec128i(INT_MAX),
/* XMMIntMaxPD */ vec128d(INT_MAX),
/* XMMPosIntMinPS */ vec128f((float)0x80000000u),
};
// First location to try and place constants.

1
src/xenia/cpu/backend/x64/x64_emitter.h
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@@ -95,6 +95,7 @@ enum XmmConst {
XMMIntMin,
XMMIntMax,
XMMIntMaxPD,
XMMPosIntMinPS,
};
// Unfortunately due to the design of xbyak we have to pass this to the ctor.

42
src/xenia/cpu/backend/x64/x64_sequences.cc
View File

@@ -1601,18 +1601,38 @@ struct VECTOR_CONVERT_F2I
: Sequence<VECTOR_CONVERT_F2I,
I<OPCODE_VECTOR_CONVERT_F2I, V128Op, V128Op>> {
static void Emit(X64Emitter& e, const EmitArgType& i) {
Xmm src1 = i.src1;
if (i.instr->flags & ARITHMETIC_UNSIGNED) {
// clamp to min 0
e.vmaxps(e.xmm0, i.src1, e.GetXmmConstPtr(XMMZero));
// Copy src1 if necessary.
bool copy_src1 = !!(i.instr->flags & ARITHMETIC_SATURATE);
if (copy_src1 && i.dest == i.src1) {
e.vmovdqa(e.xmm1, i.src1);
src1 = e.xmm1;
}
// xmm1 = mask of values >= (unsigned)INT_MIN
e.vcmpgeps(e.xmm1, e.xmm0, e.GetXmmConstPtr(XMMPosIntMinPS));
// scale any values >= (unsigned)INT_MIN back to [0, ...]
e.vsubps(e.xmm2, e.xmm0, e.GetXmmConstPtr(XMMPosIntMinPS));
e.vandps(e.xmm2, e.xmm1, e.xmm2); // 0 if < (unsigned)INT_MIN
e.vandnps(e.xmm0, e.xmm1, e.xmm0); // 0 if >= (unsigned)INT_MIN
// xmm0 = [0, INT_MAX]
// this may still contain values > INT_MAX (if src has vals > UINT_MAX)
e.vorps(e.xmm0, e.xmm0, e.xmm2);
e.vcvttps2dq(i.dest, e.xmm0);
// xmm0 = mask of values that need saturation
e.vpcmpeqd(e.xmm0, i.dest, e.GetXmmConstPtr(XMMIntMin));
// scale values back above [INT_MIN, UINT_MAX]
e.vpand(e.xmm1, e.xmm1, e.GetXmmConstPtr(XMMIntMin));
e.vpaddd(i.dest, i.dest, e.xmm1);
// saturate values > UINT_MAX
e.vpor(i.dest, i.dest, e.xmm0);
} else {
Xmm src1 = e.xmm2;
e.vmovdqa(src1, i.src1); // Duplicate src1.
e.vcvttps2dq(i.dest, i.src1);
e.vcvttps2dq(i.dest, i.src1);
if (i.instr->flags & ARITHMETIC_SATURATE &&
!(i.instr->flags & ARITHMETIC_UNSIGNED)) {
// if dest is indeterminate and i.src1 >= 0 (i.e. !(i.src1 & 0x80000000))
// i.dest = 0x7FFFFFFF
e.vpcmpeqd(e.xmm0, i.dest, e.GetXmmConstPtr(XMMIntMin));
@@ -1621,8 +1641,6 @@ struct VECTOR_CONVERT_F2I
// (high bit of xmm0 = is ind. && i.src1 >= 0)
e.vblendvps(i.dest, i.dest, e.GetXmmConstPtr(XMMIntMax), e.xmm0);
}
// TODO(DrChat): Unsigned saturation!
}
};
EMITTER_OPCODE_TABLE(OPCODE_VECTOR_CONVERT_F2I, VECTOR_CONVERT_F2I);