On Thu, Oct 24, 2013 at 1:46 AM, Erik Faye-Lund <kusmab...@gmail.com> wrote:
> On Thu, Oct 24, 2013 at 2:19 AM, Matt Turner <matts...@gmail.com> wrote:
>> A few Serious Sam 3 shaders affected:
>>
>> instructions in affected programs: 4384 -> 4344 (-0.91%)
>> ---
>> src/glsl/opt_algebraic.cpp | 12 ++++++++++++
>> 1 file changed, 12 insertions(+)
>>
>> diff --git a/src/glsl/opt_algebraic.cpp b/src/glsl/opt_algebraic.cpp
>> index 37b2f02..3bf0689 100644
>> --- a/src/glsl/opt_algebraic.cpp
>> +++ b/src/glsl/opt_algebraic.cpp
>> @@ -32,8 +32,11 @@
>> #include "ir_visitor.h"
>> #include "ir_rvalue_visitor.h"
>> #include "ir_optimization.h"
>> +#include "ir_builder.h"
>> #include "glsl_types.h"
>>
>> +using namespace ir_builder;
>> +
>> namespace {
>>
>> /**
>> @@ -436,6 +439,15 @@ ir_algebraic_visitor::handle_expression(ir_expression
>> *ir)
>>
>> this->progress = true;
>> return new(mem_ctx) ir_constant(ir->type, &data);
>> + } else if (op_expr[0] && op_expr[0]->operation == ir_unop_logic_not &&
>> + op_expr[1] && op_expr[1]->operation == ir_unop_logic_not) {
>> + /* De Morgan's Law:
>> + * (not A) or (not B) === not (A and B)
>> + */
>> + temp = logic_not(logic_and(op_expr[0]->operands[0],
>> + op_expr[1]->operands[0]));
>> + return swizzle_if_required(ir, temp);
>> + this->progress = true;
>
> Returning before reporting progress?
Ouch! Thanks.
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