Module: Mesa
Branch: master
Commit: ae828413c4a98ba3546f5586f2e20d9da718ab0c
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=ae828413c4a98ba3546f5586f2e20d9da718ab0c
Author: Christoph Bumiller <e0425...@student.tuwien.ac.at>
Date: Sat Jan 7 18:42:13 2012 +0100
nv50/ir/opt: optimize u32 MOD by power of 2 into AND
---
.../drivers/nv50/codegen/nv50_ir_peephole.cpp | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/src/gallium/drivers/nv50/codegen/nv50_ir_peephole.cpp
b/src/gallium/drivers/nv50/codegen/nv50_ir_peephole.cpp
index 2a7a981..fc025d8 100644
--- a/src/gallium/drivers/nv50/codegen/nv50_ir_peephole.cpp
+++ b/src/gallium/drivers/nv50/codegen/nv50_ir_peephole.cpp
@@ -698,6 +698,14 @@ ConstantFolding::opnd(Instruction *i, ImmediateValue *src,
int s)
}
break;
+ case OP_MOD:
+ if (i->sType == TYPE_U32 && imm.isPow2()) {
+ bld.setPosition(i, false);
+ i->op = OP_AND;
+ i->setSrc(1, bld.loadImm(NULL, imm.reg.data.u32 - 1));
+ }
+ break;
+
case OP_SET: // TODO: SET_AND,OR,XOR
{
CmpInstruction *si = findOriginForTestWithZero(i->getSrc(t));
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