diff options
| author | Karol Herbst <[email protected]> | 2016-10-06 00:36:23 +0200 |
|---|---|---|
| committer | Samuel Pitoiset <[email protected]> | 2016-10-06 19:39:51 +0200 |
| commit | f96945c5b5c3a52685e76795f03f75c75fb62fc7 (patch) | |
| tree | 306c03a489c8d124ff26c6f4eed9241d26615a16 /src/gallium/drivers | |
| parent | 6963f94e98e9b0a1432bc0071d495c9e31b899ae (diff) | |
nv50/ir: optimize sub(a, 0) to a
helped some ue4 demos and divinity OS shaders
total instructions in shared programs : 2818674 -> 2818606 (-0.00%)
total gprs used in shared programs : 379273 -> 379273 (0.00%)
total local used in shared programs : 9505 -> 9505 (0.00%)
total bytes used in shared programs : 25837792 -> 25837192 (-0.00%)
local gpr inst bytes
helped 0 0 33 33
hurt 0 0 0 0
Signed-off-by: Karol Herbst <[email protected]>
Reviewed-by: Ilia Mirkin <[email protected]>
Reviewed-by: Pierre Moreau <[email protected]>
Diffstat (limited to 'src/gallium/drivers')
| -rw-r--r-- | src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp | 3 |
1 files changed, 3 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 9875738593e..1c71155f811 100644 --- a/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp @@ -1037,12 +1037,15 @@ ConstantFolding::opnd(Instruction *i, ImmediateValue &imm0, int s) } break; case OP_ADD: + case OP_SUB: if (i->usesFlags()) break; if (imm0.isInteger(0)) { if (s == 0) { i->setSrc(0, i->getSrc(1)); i->src(0).mod = i->src(1).mod; + if (i->op == OP_SUB) + i->src(0).mod = i->src(0).mod ^ Modifier(NV50_IR_MOD_NEG); } i->setSrc(1, NULL); i->op = i->src(0).mod.getOp(); |