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| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-11-18 19:22:35 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-11-18 19:22:35 +0000 |
| commit | e862ffe0e9972049a82bcd0dfb51e0aae9a83606 (patch) | |
| tree | 03f1b2b6d8ba6423f0fa37f78cc5e084bee87a35 /gcc/gcse.c | |
| parent | be5cecfdc1ad76fa8b4ef703bcdc5dc5499e2934 (diff) | |
| download | ppe42-gcc-e862ffe0e9972049a82bcd0dfb51e0aae9a83606.tar.gz ppe42-gcc-e862ffe0e9972049a82bcd0dfb51e0aae9a83606.zip | |
PR rtl-optimization/34132
* gcse.c (try_replace_reg): Avoid rtx sharing between REG_EQUAL note
and insn.
* gcc.c-torture/compile/20071118-1.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@130275 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/gcse.c')
| -rw-r--r-- | gcc/gcse.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/gcse.c b/gcc/gcse.c index c5e8c7b44f5..84c0994753d 100644 --- a/gcc/gcse.c +++ b/gcc/gcse.c @@ -2665,7 +2665,8 @@ try_replace_reg (rtx from, rtx to, rtx insn) with our replacement. */ if (note != 0 && REG_NOTE_KIND (note) == REG_EQUAL) set_unique_reg_note (insn, REG_EQUAL, - simplify_replace_rtx (XEXP (note, 0), from, to)); + simplify_replace_rtx (XEXP (note, 0), from, + copy_rtx (to))); if (!success && set && reg_mentioned_p (from, SET_SRC (set))) { /* If above failed and this is a single set, try to simplify the source of |
