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vcmpbfp with Rc bit support

This commit is contained in:
Dr. Chat 2015-08-30 00:01:34 -05:00
parent e7b46afa9d
commit 60538e7dda
1 changed files with 9 additions and 6 deletions
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15
src/xenia/cpu/frontend/ppc_emit_altivec.cc
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@ -580,20 +580,23 @@ XEEMITTER(vcfpuxws128, VX128_3(6, 624), VX128_3)(PPCHIRBuilder& f,
int InstrEmit_vcmpbfp_(PPCHIRBuilder& f, InstrData& i, uint32_t vd, uint32_t va,
uint32_t vb, uint32_t rc) {
// if vA or vB are NaN, the 2 high-order bits are set (0xC0000000)
Value* va_value = f.LoadVR(va);
Value* vb_value = f.LoadVR(vb);
Value* gt = f.VectorCompareSGT(va_value, vb_value, FLOAT32_TYPE);
Value* lt =
f.Not(f.VectorCompareSGE(va_value, f.Neg(vb_value), FLOAT32_TYPE));
Value* ge = f.VectorCompareSGE(va_value, vb_value, FLOAT32_TYPE);
Value* le =
f.Not(f.VectorCompareSGT(va_value, f.Neg(vb_value), FLOAT32_TYPE));
Value* v =
f.Or(f.And(gt, f.LoadConstantVec128(vec128i(0x80000000, 0x80000000,
f.Or(f.And(ge, f.LoadConstantVec128(vec128i(0x80000000, 0x80000000,
0x80000000, 0x80000000))),
f.And(lt, f.LoadConstantVec128(vec128i(0x40000000, 0x40000000,
f.And(le, f.LoadConstantVec128(vec128i(0x40000000, 0x40000000,
0x40000000, 0x40000000))));
f.StoreVR(vd, v);
if (rc) {
// CR0:4 = 0; CR0:5 = VT == 0; CR0:6 = CR0:7 = 0;
assert_always();
// If all of the elements are within bounds, CR6[2] is set
// FIXME: Does not affect CR6[0], but the following function does.
f.UpdateCR6(f.Or(ge, le));
}
return 0;
}