From: Jakub Jelinek <jakub@redhat.com>
Date: Mon, 27 Jun 2005 08:11:00 +0000 (+0200)
Subject: * regrename.c (copy_value): Fix comment.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=de16a5b6a405055fe49ac876878ebe2a65459b42;p=gcc.git

* regrename.c (copy_value): Fix comment.

From-SVN: r101351
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9fe1c391e70..092783dfe3a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,7 @@
 2005-06-27  Jakub Jelinek  <jakub@redhat.com>
 
+	* regrename.c (copy_value): Fix comment.
+
 	* toplev.c (process_options): Use if (FRAME_GROWS_DOWNWARD)
 	instead of preprocessor conditionals.
 
diff --git a/gcc/regrename.c b/gcc/regrename.c
index 91e9d71a9a1..3a596ff35df 100644
--- a/gcc/regrename.c
+++ b/gcc/regrename.c
@@ -1225,7 +1225,9 @@ copy_value (rtx dest, rtx src, struct value_data *vd)
   if (frame_pointer_needed && dr == HARD_FRAME_POINTER_REGNUM)
     return;
 
-  /* Likewise for fixed or global registers.  */
+  /* Do not propagate copies to fixed or global registers, patterns
+     can be relying to see particular fixed register or users can
+     expect the chosen global register in asm.  */
   if (fixed_regs[dr] || global_regs[dr])
     return;