* regrename.c (copy_value): Fix comment.

From-SVN: r101351

* regrename.c (copy_value): Fix comment.
From-SVN: r101351
de16a5b6 · Jakub Jelinek · Jakub Jelinek · fd5431bc · de16a5b6 · de16a5b6
Commit de16a5b6 authored Jun 27, 2005 by Jakub Jelinek Committed by Jakub Jelinek Jun 27, 2005
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gcc/ChangeLog
+2 -0

gcc/regrename.c
+3 -1

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
 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.


--- 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;