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| author | Segher Boessenkool <segher@kernel.crashing.org> | 2018-05-09 14:12:33 +0200 |
|---|---|---|
| committer | Segher Boessenkool <segher@gcc.gnu.org> | 2018-05-09 14:12:33 +0200 |
| commit | c35533d7e97fda61c50be8b8260157956cf388e2 (patch) | |
| tree | 0c11705fcc36e0cb2df00a4a043399348993b03c /gcc/regrename.c | |
| parent | 3ba4ff4130903a3ded931d715a2204bd8834fe60 (diff) | |
regcprop: Avoid REG_CFA_REGISTER notes (PR85645)
Changing a SET that has a REG_CFA_REGISTER note is wrong if we are
changing the SET_DEST, or if the REG_CFA_REGISTER has nil as its
argument, and maybe some other cases. It's never really useful to
propagate into such an instruction, so let's just bail whenever we
see such a note.
PR rtl-optimization/85645
* regcprop.c (copyprop_hardreg_forward_1): Don't propagate into an
insn that has a REG_CFA_REGISTER note.
From-SVN: r260074
Diffstat (limited to 'gcc/regrename.c')
0 files changed, 0 insertions, 0 deletions