From 455429794c9d766b106e2d5230ea22f87dfcd585 Mon Sep 17 00:00:00 2001
From: Roberto Raggi <roberto.raggi@nokia.com>
Date: Fri, 26 Nov 2010 12:37:05 +0100
Subject: [PATCH] Propagate the ExprResult::isConstant attribute.

---
 src/libs/glsl/glslsemantic.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/libs/glsl/glslsemantic.cpp b/src/libs/glsl/glslsemantic.cpp
index 1c6cf67a7f2..177c547de7d 100644
--- a/src/libs/glsl/glslsemantic.cpp
+++ b/src/libs/glsl/glslsemantic.cpp
@@ -179,12 +179,14 @@ bool Semantic::visit(BinaryExpressionAST *ast)
 {
     ExprResult left = expression(ast->left);
     ExprResult right = expression(ast->right);
+    _expr.isConstant = left.isConstant && right.isConstant;
     return false;
 }
 
 bool Semantic::visit(UnaryExpressionAST *ast)
 {
     ExprResult expr = expression(ast->expr);
+    _expr.isConstant = expr.isConstant;
     return false;
 }
 
@@ -193,6 +195,7 @@ bool Semantic::visit(TernaryExpressionAST *ast)
     ExprResult first = expression(ast->first);
     ExprResult second = expression(ast->second);
     ExprResult third = expression(ast->third);
+    _expr.isConstant = first.isConstant && second.isConstant && third.isConstant;
     return false;
 }