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glsl: Skip processing expression trees in do_if_simplification().

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Reduces time spent in this during glean texCombine by about 2/3.
This commit is contained in:
Eric Anholt 2011-03-11 13:08:26 -08:00
parent d3a444af2d
commit 991fa4d3d0
1 changed files with 10 additions and 0 deletions
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10
src/glsl/opt_if_simplification.cpp
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@ -38,10 +38,20 @@ public:
}
ir_visitor_status visit_leave(ir_if *);
ir_visitor_status visit_enter(ir_assignment *);
bool made_progress;
};
/* We only care about the top level "if" instructions, so don't
* descend into expressions.
*/
ir_visitor_status
ir_if_simplification_visitor::visit_enter(ir_assignment *ir)
{
return visit_continue_with_parent;
}
bool
do_if_simplification(exec_list *instructions)
{