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-rw-r--r--src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp8
1 files changed, 8 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 95e9fdfc57d..b2c9fdfc7a4 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
@@ -1202,6 +1202,14 @@ ConstantFolding::opnd(Instruction *i, ImmediateValue &imm0, int s)
i->setSrc(1, bld.loadImm(NULL, imm0.reg.data.u32 + imm1.reg.data.u32));
}
break;
+ case OP_SHR:
+ if (si->src(1).getImmediate(imm1) && imm0.reg.data.u32 == imm1.reg.data.u32) {
+ bld.setPosition(i, false);
+ i->op = OP_AND;
+ i->setSrc(0, si->getSrc(0));
+ i->setSrc(1, bld.loadImm(NULL, ~((1 << imm0.reg.data.u32) - 1)));
+ }
+ break;
case OP_MUL:
int muls;
if (isFloatType(si->dType))