This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |
Other format: | [Raw text] |
Hi all, This is an updated version of patch in https://gcc.gnu.org/ml/gcc-patches/2017-07/msg00409.html . It prevents optimization in presense of sNaNs (and qNaNs when comparison operator is > >= < <=) to preserve FP exceptions. Note that I had to use -fsignaling-nans in pr57371-5.c test because by default this option is off and some existing patterns in match.pd happily optimize NaN comparisons, even with sNaNs (!). Bootstrapped and regtested on x64. Ok for trunk? -Y
Attachment:
pr57371-4.patch
Description: Binary data
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |