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i965/fs: Allow CSE on math opcodes on Gen6+.

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total instructions in shared programs: 2081469 -> 2081248 (-0.01%)
instructions in affected programs:     22606 -> 22385 (-0.98%)
No programs were hurt by this patch.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
This commit is contained in:
Kenneth Graunke 2013-07-25 00:30:05 -07:00
parent 2c9a1518a1
commit 3a439534de
1 changed files with 11 additions and 0 deletions
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11
src/mesa/drivers/dri/i965/brw_fs_cse.cpp
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@ -73,6 +73,17 @@ is_expression(const fs_inst *const inst)
case FS_OPCODE_CINTERP:
case FS_OPCODE_LINTERP:
return true;
case SHADER_OPCODE_RCP:
case SHADER_OPCODE_RSQ:
case SHADER_OPCODE_SQRT:
case SHADER_OPCODE_EXP2:
case SHADER_OPCODE_LOG2:
case SHADER_OPCODE_POW:
case SHADER_OPCODE_INT_QUOTIENT:
case SHADER_OPCODE_INT_REMAINDER:
case SHADER_OPCODE_SIN:
case SHADER_OPCODE_COS:
return inst->mlen == 0;
default:
return false;
}