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nv50/ir: avoid folding mul + add if the mul has a dnz

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Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
This commit is contained in:
Ilia Mirkin
2016-03-12 20:53:34 -05:00
parent a651bc027d
commit b3e7fb5234
1 changed files with 2 additions and 3 deletions
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src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
+2 -3
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@@ -1635,11 +1635,10 @@ AlgebraicOpt::tryADDToMADOrSAD(Instruction *add, operation toOp)
if (src->getUniqueInsn() && src->getUniqueInsn()->bb != add->bb)
return false;
if (src->getInsn()->saturate)
if (src->getInsn()->saturate || src->getInsn()->postFactor ||
src->getInsn()->dnz)
return false;
if (src->getInsn()->postFactor)
return false;
if (toOp == OP_SAD) {
ImmediateValue imm;
if (!src->getInsn()->src(2).getImmediate(imm))