From: Karol Herbst <nouveau@karolherbst.de>
Date: Thu, 28 Jan 2016 15:45:58 +0000 (+0100)
Subject: nv50/ir: we can't do the add to mad conversion when the mul saturates
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=edf774bb7eae32f00b900a6faa9b5c698affdcaa;p=mesa.git

nv50/ir: we can't do the add to mad conversion when the mul saturates

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
---

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
index 35b1fa7795e..6192c0665e4 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
@@ -1635,6 +1635,9 @@ AlgebraicOpt::tryADDToMADOrSAD(Instruction *add, operation toOp)
    if (src->getUniqueInsn() && src->getUniqueInsn()->bb != add->bb)
       return false;
 
+   if (src->getInsn()->saturate)
+      return false;
+
    if (src->getInsn()->postFactor)
       return false;
    if (toOp == OP_SAD) {