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nv50/ir: optimize SHLADD(a, b, 0x0) to SHL(a, b) 

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
This commit is contained in:
Samuel Pitoiset 2016-09-14 18:57:02 +02:00
parent e4eb0fca02
commit 2e008be9a9
1 changed files with 8 additions and 0 deletions
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8
src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
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@ -907,6 +907,14 @@ ConstantFolding::opnd3(Instruction *i, ImmediateValue &imm2)
return;
}
break;
case OP_SHLADD:
if (imm2.isInteger(0)) {
i->op = OP_SHL;
i->setSrc(2, NULL);
foldCount++;
return;
}
break;
default:
return;
}