From: Ian Romanick <ian.d.romanick@intel.com>
Date: Fri, 4 Jun 2010 23:20:35 +0000 (-0700)
Subject: Derefence components of constants smarter
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c9cb1032be454ff5fdb802a629565cfaeb2e5d5a;p=mesa.git

Derefence components of constants smarter

During generation of calls to constructors, derefernce constants by creating
new constants instead of creating dereferences.
---

diff --git a/ast_function.cpp b/ast_function.cpp
index 06498b0e379..fc53d7ac1cb 100644
--- a/ast_function.cpp
+++ b/ast_function.cpp
@@ -188,6 +188,13 @@ dereference_component(ir_rvalue *src, unsigned component)
 {
    assert(component < src->type->components());
 
+   /* If the source is a constant, just create a new constant instead of a
+    * dereference of the existing constant.
+    */
+   ir_constant *constant = src->as_constant();
+   if (constant)
+      return new ir_constant(constant, component);
+
    if (src->type->is_scalar()) {
       return src;
    } else if (src->type->is_vector()) {