Signed-off-by: Ilia Mirkin <[email protected]>
---
.../drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
index 8ac3b26..18e8e67 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
@@ -1567,10 +1567,22 @@ NVC0LoweringPass::handleMOD(Instruction *i)
bool
NVC0LoweringPass::handleSQRT(Instruction *i)
{
- Instruction *rsq = bld.mkOp1(OP_RSQ, i->dType,
- bld.getSSA(typeSizeof(i->dType)),
i->getSrc(0));
+ Value *pred = bld.getSSA(1, FILE_PREDICATE);
+ Value *zero = bld.getSSA();
+ Instruction *rsq;
+
+ bld.mkOp1(OP_MOV, TYPE_U32, zero, bld.mkImm(0));
+ if (i->dType == TYPE_F64)
+ zero = bld.mkOp2v(OP_MERGE, TYPE_U64, bld.getSSA(8), zero, zero);
+ bld.mkCmp(OP_SET, CC_LE, i->dType, pred, i->dType, i->getSrc(0), zero);
+ bld.mkOp1(OP_MOV, i->dType, i->getDef(0), zero)->setPredicate(CC_P, pred);
+ rsq = bld.mkOp1(OP_RSQ, i->dType,
+ bld.getSSA(typeSizeof(i->dType)), i->getSrc(0));
+ rsq->setPredicate(CC_NOT_P, pred);
i->op = OP_MUL;
i->setSrc(1, rsq->getDef(0));
+ i->setPredicate(CC_NOT_P, pred);
+
return true;
}
--
2.0.5
_______________________________________________
mesa-dev mailing list
[email protected]
http://lists.freedesktop.org/mailman/listinfo/mesa-dev
