diff options
| author | Matt Turner <[email protected]> | 2014-01-09 20:57:36 -0800 |
|---|---|---|
| committer | Matt Turner <[email protected]> | 2014-01-21 14:20:44 -0800 |
| commit | bf0773aeca86669371d99eadb928c6dc92d5840a (patch) | |
| tree | da10136457b189ddc480635cb76fec375755bc9e /src | |
| parent | 8d37e9915a3b21b496269a39f677a80a6e02cb2c (diff) | |
i965/fs: Optimize LRP with x == y into a MOV.
total instructions in shared programs: 1487331 -> 1485988 (-0.09%)
instructions in affected programs: 45638 -> 44295 (-2.94%)
GAINED: 7
LOST: 0
Reviewed-by: Jordan Justen <[email protected]>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index 4a96126bac5..78ddf0d99cf 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -2000,6 +2000,16 @@ fs_visitor::opt_algebraic() break; } break; + case BRW_OPCODE_LRP: + if (inst->src[1].equals(inst->src[2])) { + inst->opcode = BRW_OPCODE_MOV; + inst->src[0] = inst->src[1]; + inst->src[1] = reg_undef; + inst->src[2] = reg_undef; + progress = true; + break; + } + break; case BRW_OPCODE_SEL: if (inst->saturate && inst->src[1].file == IMM) { switch (inst->conditional_mod) { |