diff options
Diffstat (limited to 'src/glsl')
| -rw-r--r-- | src/glsl/ir_constant_folding.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/glsl/ir_constant_folding.cpp b/src/glsl/ir_constant_folding.cpp index 2daa6fde38..66a92e9f3b 100644 --- a/src/glsl/ir_constant_folding.cpp +++ b/src/glsl/ir_constant_folding.cpp @@ -167,6 +167,19 @@ ir_constant_folding_visitor::visit(ir_assignment *ir) ir->rhs = const_val; else ir->rhs->accept(this); + + if (ir->condition) { + /* If the condition is constant, either remove the condition or + * remove the never-executed assignment. + */ + const_val = ir->condition->constant_expression_value(); + if (const_val) { + if (const_val->value.b[0]) + ir->condition = NULL; + else + ir->remove(); + } + } } |