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| author | steven <steven@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-02-20 22:11:52 +0000 |
|---|---|---|
| committer | steven <steven@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-02-20 22:11:52 +0000 |
| commit | e4f51d19ea7e0a169e7efbce63cc8c62e71851bb (patch) | |
| tree | cbbca2e4e5c53d02da8c53c3ab7269794ce135b2 /gcc/rtlanal.c | |
| parent | 0d51184a2158cf3ab280f491f33cc49b6108d2f4 (diff) | |
| download | gcc-e4f51d19ea7e0a169e7efbce63cc8c62e71851bb.tar.gz | |
* rtlanal.c (find_reg_equal_equiv_note): Do not find REG_EQ*
notes on an insn with multiple sets, even if single_set returns
non-NULL for that insn.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@122177 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/rtlanal.c')
| -rw-r--r-- | gcc/rtlanal.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c index 2d156638b6d..b23eec4cf9f 100644 --- a/gcc/rtlanal.c +++ b/gcc/rtlanal.c @@ -1676,11 +1676,18 @@ find_reg_equal_equiv_note (rtx insn) if (!INSN_P (insn)) return 0; + for (link = REG_NOTES (insn); link; link = XEXP (link, 1)) if (REG_NOTE_KIND (link) == REG_EQUAL || REG_NOTE_KIND (link) == REG_EQUIV) { - if (single_set (insn) == 0) + /* FIXME: We should never have REG_EQUAL/REG_EQUIV notes on + insns that have multiple sets. Checking single_set to + make sure of this is not the proper check, as explained + in the comment in set_unique_reg_note. + + This should be changed into an assert. */ + if (GET_CODE (PATTERN (insn)) == PARALLEL && multiple_sets (insn)) return 0; return link; } |