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] |
Hello! As shown in the PR, when moving DFmode value to/from a FP register, we don't need to bounce it with an atomic DImode fild/fistp in case of -march=pentium. DFmode move is atomic by itself. 2016-05-29 Uros Bizjak <ubizjak@gmail.com> PR target/71245 * config/i386/sync.md (define_peephole2 atomic_storedi_fpu): New peepholes to remove unneeded fild/fistp pairs. (define_peephole2 atomic_loaddi_fpu): Ditto. testsuite/ChangeLog: 2016-05-29 Uros Bizjak <ubizjak@gmail.com> PR target/71245 * gcc.target/i386/pr71245-1.c: New test. * gcc.target/i386/pr71245-2.c: Ditto. Bootstrapped on x86_64-linux-gnu and regression tested with -m32/march=pentium. Committed to mainline SVN. Uros.
Attachment:
p.diff.txt
Description: Text document
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |