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| author | Segher Boessenkool <segher@kernel.crashing.org> | 2018-03-12 16:26:16 +0100 |
|---|---|---|
| committer | Segher Boessenkool <segher@gcc.gnu.org> | 2018-03-12 16:26:16 +0100 |
| commit | fb54f550a047a40ff1438c5cfb890114baa31191 (patch) | |
| tree | 0f6b19f946512482f7a72b2fb66daba7a03058d0 /gcc/tree-ssa-strlen.c | |
| parent | d67b5d8d1db0b9dff3e123a8e2be31cd5634821a (diff) | |
| download | gcc-fb54f550a047a40ff1438c5cfb890114baa31191.zip gcc-fb54f550a047a40ff1438c5cfb890114baa31191.tar.gz gcc-fb54f550a047a40ff1438c5cfb890114baa31191.tar.bz2 | |
combine: Fix PR84780 (more LOG_LINKS trouble)
There still are situations where we have stale LOG_LINKS. This causes
combine to try two-insn combinations I2->I3 where the register set by
I2 is used before I3 as well. Not good.
This patch fixes it by checking for this situation in can_combine_p
(similar to what we already do for three and four insn combinations).
From-SVN: r258452
Diffstat (limited to 'gcc/tree-ssa-strlen.c')
0 files changed, 0 insertions, 0 deletions