diff options
| -rw-r--r-- | src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp index 05b8db4a3d8..35b1fa7795e 100644 --- a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp @@ -1539,6 +1539,7 @@ private: void handleCVT_CVT(Instruction *); void handleCVT_EXTBF(Instruction *); void handleSUCLAMP(Instruction *); + void handleNEG(Instruction *); BuildUtil bld; }; @@ -2011,6 +2012,34 @@ AlgebraicOpt::handleSUCLAMP(Instruction *insn) insn->setSrc(0, add->getSrc(s)); } +// NEG(AND(SET, 1)) -> SET +void +AlgebraicOpt::handleNEG(Instruction *i) { + Instruction *src = i->getSrc(0)->getInsn(); + ImmediateValue imm; + int b; + + if (isFloatType(i->sType) || !src || src->op != OP_AND) + return; + + if (src->src(0).getImmediate(imm)) + b = 1; + else if (src->src(1).getImmediate(imm)) + b = 0; + else + return; + + if (!imm.isInteger(1)) + return; + + Instruction *set = src->getSrc(b)->getInsn(); + if ((set->op == OP_SET || set->op == OP_SET_AND || + set->op == OP_SET_OR || set->op == OP_SET_XOR) && + !isFloatType(set->dType)) { + i->def(0).replace(set->getDef(0), false); + } +} + bool AlgebraicOpt::visit(BasicBlock *bb) { @@ -2048,6 +2077,9 @@ AlgebraicOpt::visit(BasicBlock *bb) case OP_SUCLAMP: handleSUCLAMP(i); break; + case OP_NEG: + handleNEG(i); + break; default: break; } |