diff options
| author | Easwaran Raman <eraman@google.com> | 2014-09-05 22:23:26 +0000 |
|---|---|---|
| committer | Easwaran Raman <eraman@gcc.gnu.org> | 2014-09-05 22:23:26 +0000 |
| commit | 14e4c2af4386b531f94a0ccdeb64d6282bc60415 (patch) | |
| tree | 402ca864e3336212cecef4013cf31f42d3c49309 /gcc/ifcvt.c | |
| parent | 8a03df77b1b29bc1a1609a68d694890a28e089a4 (diff) | |
| download | gcc-14e4c2af4386b531f94a0ccdeb64d6282bc60415.zip gcc-14e4c2af4386b531f94a0ccdeb64d6282bc60415.tar.gz gcc-14e4c2af4386b531f94a0ccdeb64d6282bc60415.tar.bz2 | |
re PR rtl-optimization/62146 (CSE replaces constant with an expression incorrectly)
2014-09-05 Easwaran Raman <eraman@google.com>
PR rtl-optimization/62146
* ifcvt.c (dead_or_predicable): Make removal of REG_EQUAL note of
hoisted instruction unconditional.
testsuite:
* testsuite/g++.dg/opt/pr62146.C: New.
From-SVN: r214977
Diffstat (limited to 'gcc/ifcvt.c')
| -rw-r--r-- | gcc/ifcvt.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/gcc/ifcvt.c b/gcc/ifcvt.c index eee04cc..bce9fb3 100644 --- a/gcc/ifcvt.c +++ b/gcc/ifcvt.c @@ -4403,17 +4403,14 @@ dead_or_predicable (basic_block test_bb, basic_block merge_bb, insn = head; do { - rtx note, set; + rtx note; if (! INSN_P (insn)) continue; note = find_reg_note (insn, REG_EQUAL, NULL_RTX); if (! note) continue; - set = single_set (insn); - if (!set || !function_invariant_p (SET_SRC (set)) - || !function_invariant_p (XEXP (note, 0))) - remove_note (insn, note); + remove_note (insn, note); } while (insn != end && (insn = NEXT_INSN (insn))); /* PR46315: when moving insns above a conditional branch, the REG_EQUAL |