[Mesa-dev] [PATCH 12/12] nir/glsl: Propagate invariant into NIR alu ops

[Jason Ekstrand]

---
 src/compiler/nir/glsl_to_nir.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/compiler/nir/glsl_to_nir.cpp b/src/compiler/nir/glsl_to_nir.cpp
index 613b138..f592c57 100644
--- a/src/compiler/nir/glsl_to_nir.cpp
+++ b/src/compiler/nir/glsl_to_nir.cpp
@@ -1048,6 +1048,8 @@ nir_visitor::visit(ir_assignment *ir)
 {
    unsigned num_components = ir->lhs->type->vector_elements;
 
+   b.exact = ir->lhs->variable_referenced()->data.invariant;
+
    if ((ir->rhs->as_dereference() || ir->rhs->as_constant()) &&
        (ir->write_mask == (1 << num_components) - 1 || ir->write_mask == 0)) {
       /* We're doing a plain-as-can-be copy, so emit a copy_var */
-- 
2.5.0.400.gff86faf