diff options
author | Matt Turner <[email protected]> | 2013-10-27 21:26:36 -0700 |
---|---|---|
committer | Matt Turner <[email protected]> | 2013-11-01 15:21:07 -0700 |
commit | 3c28b2c09f491bfa55dc9e5d7858a8b900c25432 (patch) | |
tree | 7c978542aa8a1029dd96959a57bf40b3cc9aa668 /src | |
parent | ca675b73d3ac2e1b57ec385c2c80b05b6382f6b6 (diff) |
i965/fs: Optimize saturating SEL.G(E) with imm val <= 0.0f.
Only one program's instruction count is changed, but a shader in Tropics
is also affected.
instructions in affected programs: 326 -> 320 (-1.84%)
Reviewed-by: Eric Anholt <[email protected]>
Reviewed-by: Paul Berry <[email protected]>
Diffstat (limited to 'src')
-rw-r--r-- | src/mesa/drivers/dri/i965/brw_fs.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index 56284d94e0b..7064910281f 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -1897,6 +1897,20 @@ fs_visitor::opt_algebraic() break; } break; + case BRW_CONDITIONAL_GE: + case BRW_CONDITIONAL_G: + switch (inst->src[1].type) { + case BRW_REGISTER_TYPE_F: + if (inst->src[1].imm.f <= 0.0f) { + inst->opcode = BRW_OPCODE_MOV; + inst->src[1] = reg_undef; + inst->conditional_mod = BRW_CONDITIONAL_NONE; + progress = true; + } + break; + default: + break; + } default: break; } |