glsl: Remove bonus tree walking in opt_constant_folding().

It looks like this was missed when converting opt_constant_folding()
from a hierarchical visitor to an rvalue visitor in 6606fde3.

ir_rvalue_visitor already processes values on the way back up the tree,
so we will have already visited every child node.  There's no point in
doing it again.

No change in shader-db.

Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>

1 files changed, 0 insertions, 2 deletions

diff --git a/src/compiler/glsl/opt_constant_folding.cpp b/src/compiler/glsl/opt_constant_folding.cpp
index 150a17b2af6..de13c9e068e 100644
--- a/src/compiler/glsl/opt_constant_folding.cpp
+++ b/src/compiler/glsl/opt_constant_folding.cpp
@@ -89,8 +89,6 @@ ir_constant_folding_visitor::handle_rvalue(ir_rvalue **rvalue)
    if (constant) {
       *rvalue = constant;
       this->progress = true;
-   } else {
-      (*rvalue)->accept(this);
    }
 }