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re PR rtl-optimization/37769 (internal compiler error: in reg_overlap_mentioned_for_reload_p, at reload.c:6525) 

PR rtl-optimization/37769
	* regmove.c (optimize_reg_copy_2): Update REG_INC note if needed.

From-SVN: r141354
This commit is contained in:
Kaz Kojima 2008-10-24 23:09:00 +00:00
parent 397979fa4d
commit d3a5ecb5dc
2 changed files with 13 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2008-10-24 Kaz Kojima <kkojima@gcc.gnu.org>
PR rtl-optimization/37769
* regmove.c (optimize_reg_copy_2): Update REG_INC note if needed.
2008-10-24 Kaz Kojima <kkojima@gcc.gnu.org>
* config/sh/t-sh: Use $(MULTILIB_CFLAGS) when compiling to

8
gcc/regmove.c
View File

@ -685,7 +685,15 @@ optimize_reg_copy_2 (rtx insn, rtx dest, rtx src)
{
if (reg_mentioned_p (dest, PATTERN (q)))
{
rtx note;
PATTERN (q) = replace_rtx (PATTERN (q), dest, src);
note = FIND_REG_INC_NOTE (q, dest);
if (note)
{
remove_note (q, note);
add_reg_note (q, REG_INC, src);
}
df_insn_rescan (q);
}