On 12/05/2016 09:54 AM, Jakub Jelinek wrote:
Hi!
The recent changes to move strchr folding from builtins.c to gimple-fold.c
broke constexpr handling with __builtin_strchr etc. (which the libstdc++
folks want to use).
Fixed by handling it also in fold-const-call.c. Bootstrapped/regtested on
x86_64-linux and i686-linux, ok for trunk?
2016-12-05 Jakub Jelinek <ja...@redhat.com>
PR c++/71537
* fold-const-call.c (fold_const_call): Handle
CFN_BUILT_IN_{INDEX,STRCHR,RINDEX,STRRCHR}.
* g++.dg/cpp0x/constexpr-strchr.C: New test.
Thoughts on moving this into match.pd? I don't see any string builtins
there, so perhaps leave it in fold-const-call for now, then move them as
a group later?
jeff
