diff options
| author | Ilia Mirkin <[email protected]> | 2014-07-07 02:32:45 -0400 |
|---|---|---|
| committer | Ilia Mirkin <[email protected]> | 2015-02-20 19:30:28 -0500 |
| commit | ef8f09be3375231481373a5c49a5cef3db3d2141 (patch) | |
| tree | 7f6d6ba58052a2c2780350ede126c84b552eb47e | |
| parent | 88127874a3eacd379f3c721bbdacdbdad4d03125 (diff) | |
nvc0/ir: handle zero and negative sqrt arguments
Signed-off-by: Ilia Mirkin <[email protected]>
| -rw-r--r-- | src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp | 16 |
1 files 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 8ac3b265893..18e8e67bc87 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; } |