Mesa (master): glsl: Apply the transformation (a a) - a in opt_algebraic.
Module: Mesa
Branch: master
Commit: 58a98d32e451762934ca8c38135357f36e29654f
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=58a98d32e451762934ca8c38135357f36e29654f
Author: Eric Anholt e...@anholt.net
Date: Thu Oct 31 09:32:42 2013 -0700
glsl: Apply the transformation (a a) - a in opt_algebraic.
Reviewed-by: Jordan Justen jordan.l.jus...@intel.com
---
src/glsl/opt_algebraic.cpp |4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp
index 3da27e5..ea3c386 100644
--- a/src/glsl/opt_algebraic.cpp
+++ b/src/glsl/opt_algebraic.cpp
@@ -357,7 +357,6 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
break;
case ir_binop_logic_and:
- /* FINISHME: Also simplify (a a) to (a). */
if (is_vec_one(op_const[0])) {
return ir-operands[1];
} else if (is_vec_one(op_const[1])) {
@@ -371,6 +370,9 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
*/
return logic_not(logic_or(op_expr[0]-operands[0],
op_expr[1]-operands[0]));
+ } else if (ir-operands[0]-equals(ir-operands[1])) {
+ /* (a a) == a */
+ return ir-operands[0];
}
break;
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Mesa (master): glsl: Apply the transformation (a ^^ a) - false in opt_algebraic.
Module: Mesa
Branch: master
Commit: 477f8cd08bb8467d28fdfd6c25fe358957e3da58
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=477f8cd08bb8467d28fdfd6c25fe358957e3da58
Author: Eric Anholt e...@anholt.net
Date: Thu Nov 7 12:10:25 2013 -0800
glsl: Apply the transformation (a ^^ a) - false in opt_algebraic.
Reviewed-by: Jordan Justen jordan.l.jus...@intel.com
---
src/glsl/opt_algebraic.cpp |4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp
index ea3c386..448f27e 100644
--- a/src/glsl/opt_algebraic.cpp
+++ b/src/glsl/opt_algebraic.cpp
@@ -377,7 +377,6 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
break;
case ir_binop_logic_xor:
- /* FINISHME: Also simplify (a ^^ a) to (false). */
if (is_vec_zero(op_const[0])) {
return ir-operands[1];
} else if (is_vec_zero(op_const[1])) {
@@ -386,6 +385,9 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
return logic_not(ir-operands[1]);
} else if (is_vec_one(op_const[1])) {
return logic_not(ir-operands[0]);
+ } else if (ir-operands[0]-equals(ir-operands[1])) {
+ /* (a ^^ a) == false */
+return ir_constant::zero(mem_ctx, ir-type);
}
break;
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Mesa (master): glsl: Apply the transformation (a || a) - a in opt_algebraic.
Module: Mesa
Branch: master
Commit: ee2704826264eba22d095c3e1e03a8532b7bd1e6
URL:
http://cgit.freedesktop.org/mesa/mesa/commit/?id=ee2704826264eba22d095c3e1e03a8532b7bd1e6
Author: Eric Anholt e...@anholt.net
Date: Thu Oct 31 00:10:32 2013 -0700
glsl: Apply the transformation (a || a) - a in opt_algebraic.
total instructions in shared programs: 1732385 - 1732373 (-0.00%)
instructions in affected programs: 416 - 404 (-2.88%)
GAINED:0
LOST: 0
(That's 4 already-short fragment shaders in dota2)
Reviewed-by: Jordan Justen jordan.l.jus...@intel.com
---
src/glsl/opt_algebraic.cpp |4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp
index a07e153..3da27e5 100644
--- a/src/glsl/opt_algebraic.cpp
+++ b/src/glsl/opt_algebraic.cpp
@@ -388,7 +388,6 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
break;
case ir_binop_logic_or:
- /* FINISHME: Also simplify (a || a) to (a). */
if (is_vec_zero(op_const[0])) {
return ir-operands[1];
} else if (is_vec_zero(op_const[1])) {
@@ -407,6 +406,9 @@ ir_algebraic_visitor::handle_expression(ir_expression *ir)
*/
return logic_not(logic_and(op_expr[0]-operands[0],
op_expr[1]-operands[0]));
+ } else if (ir-operands[0]-equals(ir-operands[1])) {
+ /* (a || a) == a */
+ return ir-operands[0];
}
break;
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