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| author | Matt Turner <mattst88@gmail.com> | 2014-08-22 14:30:38 -0700 |
|---|---|---|
| committer | Matt Turner <mattst88@gmail.com> | 2014-12-05 09:49:42 -0800 |
| commit | be80f69ecdb5544509d762ce5c832c4ad3abbe9b (patch) | |
| tree | 799515aadcc3ef21ed4f93a579b1873a7ab972c8 /src/glsl/opt_algebraic.cpp | |
| parent | a1fc6a91e5c6ab098fa8576e63b3a070852aa2a7 (diff) | |
| download | external_mesa3d-be80f69ecdb5544509d762ce5c832c4ad3abbe9b.zip external_mesa3d-be80f69ecdb5544509d762ce5c832c4ad3abbe9b.tar.gz external_mesa3d-be80f69ecdb5544509d762ce5c832c4ad3abbe9b.tar.bz2 | |
glsl: Optimize scalar all_equal/any_nequal into equal/nequal.
Cuts an instruction from two shaders in Tesseract, by allowing the
(x+y) cmp 0 -> x cmp -y optimization to take place.
instructions in affected programs: 1198 -> 1194 (-0.33%)
Reviewed-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'src/glsl/opt_algebraic.cpp')
| -rw-r--r-- | src/glsl/opt_algebraic.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp index 430f5cb..c4f883b 100644 --- a/src/glsl/opt_algebraic.cpp +++ b/src/glsl/opt_algebraic.cpp @@ -584,6 +584,16 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir) } break; + case ir_binop_all_equal: + case ir_binop_any_nequal: + if (ir->operands[0]->type->is_scalar() && + ir->operands[1]->type->is_scalar()) + return new(mem_ctx) ir_expression(ir->operation == ir_binop_all_equal + ? ir_binop_equal : ir_binop_nequal, + ir->operands[0], + ir->operands[1]); + break; + case ir_binop_rshift: case ir_binop_lshift: /* 0 >> x == 0 */ |