summaryrefslogtreecommitdiffstats
path: root/src/gallium/drivers/nouveau/codegen
diff options
context:
space:
mode:
authorIlia Mirkin <[email protected]>2015-12-04 17:26:32 -0500
committerIlia Mirkin <[email protected]>2015-12-05 18:56:43 -0500
commit0ef5c8ab7405fcc76b23393d4414f46cc9edb1fc (patch)
tree795b5d333a9077c634d164fd04918d13b4a25496 /src/gallium/drivers/nouveau/codegen
parentabd326e81b06f58797be94bd655ee06b17a34f0c (diff)
nv50/ir: fold shl + mul with immediates
On SM20 this gives: total instructions in shared programs : 6299222 -> 6294240 (-0.08%) total gprs used in shared programs : 944139 -> 944068 (-0.01%) total local used in shared programs : 54116 -> 54116 (0.00%) local gpr inst bytes helped 0 126 2781 2781 hurt 0 55 11 11 Signed-off-by: Ilia Mirkin <[email protected]>
Diffstat (limited to 'src/gallium/drivers/nouveau/codegen')
-rw-r--r--src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp16
1 files changed, 16 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 0d74f725bd1..9f446280af8 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
@@ -1194,6 +1194,22 @@ 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_MUL:
+ int muls;
+ if (isFloatType(si->dType))
+ return;
+ if (si->src(1).getImmediate(imm1))
+ muls = 1;
+ else if (si->src(0).getImmediate(imm1))
+ muls = 0;
+ else
+ return;
+
+ bld.setPosition(i, false);
+ i->op = OP_MUL;
+ i->setSrc(0, si->getSrc(!muls));
+ i->setSrc(1, bld.loadImm(NULL, imm1.reg.data.u32 << imm0.reg.data.u32));
+ break;
case OP_SUB:
case OP_ADD:
int adds;