From d3a5ecb5dcf6ad53d8d4256c54fca5256bfbd3bc Mon Sep 17 00:00:00 2001 From: Kaz Kojima Date: Fri, 24 Oct 2008 23:09:00 +0000 Subject: [PATCH] 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 --- gcc/ChangeLog | 5 +++++ gcc/regmove.c | 8 ++++++++ 2 files changed, 13 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ecd90819eaf..1beb0d0af5c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2008-10-24 Kaz Kojima + + PR rtl-optimization/37769 + * regmove.c (optimize_reg_copy_2): Update REG_INC note if needed. + 2008-10-24 Kaz Kojima * config/sh/t-sh: Use $(MULTILIB_CFLAGS) when compiling to diff --git a/gcc/regmove.c b/gcc/regmove.c index e25dbec7fe9..12b93fc2ff8 100644 --- a/gcc/regmove.c +++ b/gcc/regmove.c @@ -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); }