From aef0aaee675093ce2f494a139054b1bca94e9a43 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Wed, 5 May 2010 09:38:09 -0700
Subject: ir_copy_propagation: Fix up the doxygen about the file.

---
 ir_copy_propagation.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/ir_copy_propagation.cpp b/ir_copy_propagation.cpp
index 1f8c359..018a30d 100644
--- a/ir_copy_propagation.cpp
+++ b/ir_copy_propagation.cpp
@@ -22,9 +22,14 @@
  */
 
 /**
- * \file ir_dead_code.cpp
+ * \file ir_copy_propagation.cpp
  *
- * Eliminates dead assignments and variable declarations from the code.
+ * Moves usage of recently-copied variables to the previous copy of
+ * the variable within basic blocks.
+ *
+ * This should reduce the number of MOV instructions in the generated
+ * programs unless copy propagation is also done on the LIR, and may
+ * help anyway by triggering other optimizations that live in the HIR.
  */
 
 #include <stdio.h>
-- 
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