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nv50/ir/opt: extend handleCVT for nv50's SET u32 to f32 chain

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This commit is contained in:
Christoph Bumiller
2012-04-14 21:12:22 +02:00
parent a9f22b91e5
commit a6fcf14c23
1 changed files with 17 additions and 1 deletions
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src/gallium/drivers/nv50/codegen/nv50_ir_peephole.cpp
+17 -1
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@@ -1078,6 +1078,8 @@ AlgebraicOpt::handleLOGOP(Instruction *logop)
}
// F2I(NEG(SET with result 1.0f/0.0f)) -> SET with result -1/0
// nv50:
// F2I(NEG(I2F(ABS(SET))))
void
AlgebraicOpt::handleCVT(Instruction *cvt)
{
@@ -1090,8 +1092,22 @@ AlgebraicOpt::handleCVT(Instruction *cvt)
if (insn->src(0).mod != Modifier(0))
return;
insn = insn->getSrc(0)->getInsn();
if (!insn || insn->op != OP_SET || insn->dType != TYPE_F32)
// check for nv50 SET(-1,0) -> SET(1.0f/0.0f) chain and nvc0's f32 SET
if (insn && insn->op == OP_CVT &&
insn->dType == TYPE_F32 &&
insn->sType == TYPE_S32) {
insn = insn->getSrc(0)->getInsn();
if (!insn || insn->op != OP_ABS || insn->sType != TYPE_S32 ||
insn->src(0).mod)
return;
insn = insn->getSrc(0)->getInsn();
if (!insn || insn->op != OP_SET || insn->dType != TYPE_U32)
return;
} else
if (!insn || insn->op != OP_SET || insn->dType != TYPE_F32) {
return;
}
Instruction *bset = cloneShallow(func, insn);
bset->dType = TYPE_U32;