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glsl: Don't vectorize horizontal expressions.

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Cc: "10.1" <mesa-stable@lists.freedesktop.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=75224
This commit is contained in:
Matt Turner 2014-02-22 16:35:15 -08:00
parent 5eff8576ba
commit 4bd7f1d044
1 changed files with 15 additions and 0 deletions
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15
src/glsl/opt_vectorize.cpp
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@ -83,6 +83,7 @@ public:
virtual ir_visitor_status visit_enter(ir_assignment *);
virtual ir_visitor_status visit_enter(ir_swizzle *);
virtual ir_visitor_status visit_enter(ir_dereference_array *);
virtual ir_visitor_status visit_enter(ir_expression *);
virtual ir_visitor_status visit_enter(ir_if *);
virtual ir_visitor_status visit_enter(ir_loop *);
@ -303,6 +304,20 @@ ir_vectorize_visitor::visit_enter(ir_dereference_array *ir)
return visit_continue_with_parent;
}
/**
* Upon entering an ir_expression, remove the current assignment from further
* consideration if the expression operates horizontally on vectors.
*/
ir_visitor_status
ir_vectorize_visitor::visit_enter(ir_expression *ir)
{
if (ir->is_horizontal()) {
this->current_assignment = NULL;
return visit_continue_with_parent;
}
return visit_continue;
}
/* Since there is no statement to visit between the "then" and "else"
* instructions try to vectorize before, in between, and after them to avoid
* combining statements from different basic blocks.