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Fixing vslo and vsro.

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This commit is contained in:
Ben Vanik
2015-08-17 08:15:43 -07:00
parent 359e5b578a
commit 55068f230e
3 changed files with 85 additions and 5 deletions
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12
src/xenia/cpu/frontend/ppc_emit_altivec.cc
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@@ -1470,8 +1470,9 @@ XEEMITTER(vsldoi128, VX128_5(4, 16), VX128_5)(PPCHIRBuilder& f, InstrData& i) {
int InstrEmit_vslo_(PPCHIRBuilder& f, uint32_t vd, uint32_t va, uint32_t vb) {
// (VD) <- (VA) << (VB.b[F] & 0x78) (by octet)
// TODO(benvanik): flag for shift-by-octet as optimization.
Value* sh =
f.And(f.Extract(f.LoadVR(vb), 15, INT8_TYPE), f.LoadConstantInt8(0x78));
Value* sh = f.Shr(
f.And(f.Extract(f.LoadVR(vb), 15, INT8_TYPE), f.LoadConstantInt8(0x78)),
3);
Value* v = f.Permute(f.LoadVectorShl(sh), f.LoadVR(va), f.LoadZeroVec128(),
INT8_TYPE);
f.StoreVR(vd, v);
@@ -1622,9 +1623,10 @@ XEEMITTER(vsrh, 0x10000244, VX)(PPCHIRBuilder& f, InstrData& i) {
int InstrEmit_vsro_(PPCHIRBuilder& f, uint32_t vd, uint32_t va, uint32_t vb) {
// (VD) <- (VA) >> (VB.b[F] & 0x78) (by octet)
// TODO(benvanik): flag for shift-by-octet as optimization.
Value* sh =
f.And(f.Extract(f.LoadVR(vb), 15, INT8_TYPE), f.LoadConstantInt8(0x78));
Value* v = f.Permute(f.LoadVectorShr(sh), f.LoadVR(va), f.LoadZeroVec128(),
Value* sh = f.Shr(
f.And(f.Extract(f.LoadVR(vb), 15, INT8_TYPE), f.LoadConstantInt8(0x78)),
3);
Value* v = f.Permute(f.LoadVectorShr(sh), f.LoadZeroVec128(), f.LoadVR(va),
INT8_TYPE);
f.StoreVR(vd, v);
return 0;