http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46519
--- Comment #5 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> 2010-11-24 18:24:46 UTC --- Author: hjl Date: Wed Nov 24 18:24:39 2010 New Revision: 167124 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=167124 Log: Improve vzeroupper optimization. gcc/ 2010-11-24 H.J. Lu <hongjiu...@intel.com> PR target/46519 * config/i386/i386.c (upper_128bits_state): New. (block_info_def): Remove upper_128bits_set and done. Add state, referenced, count, processed and rescanned. (check_avx256_stores): Updated. (move_or_delete_vzeroupper_2): Updated. Handle deleted BB_END. Call note_stores only if needed. Set referenced and count. (move_or_delete_vzeroupper_1): Updated. Set rescan_vzeroupper_p. (rescan_move_or_delete_vzeroupper): New. (move_or_delete_vzeroupper): Process and rescan all all basic blocks instead of predecessor blocks of all exit points. (ix86_option_override_internal): Enable vzeroupper optimization only for -fexpensive-optimizations and not optimizing for size. (use_avx256_p): Removed. (init_cumulative_args): Don't set use_avx256_p. (ix86_function_arg): Likewise. (ix86_expand_move): Likewise. (ix86_expand_vector_move_misalign): Likewise. (ix86_local_alignment): Likewise. (ix86_minimum_alignment): Likewise. (ix86_expand_epilogue): Don't check use_avx256_p when generating vzeroupper. (ix86_expand_call): Likewise. * config/i386/i386.h (machine_function): Remove use_vzeroupper_p and use_avx256_p. Add rescan_vzeroupper_p. gcc/testsuite/ 2010-11-24 H.J. Lu <hongjiu...@intel.com> PR target/46519 * gcc.target/i386/avx-vzeroupper-10.c: Expect no avx_vzeroupper. * gcc.target/i386/avx-vzeroupper-11.c: Likewise. * gcc.target/i386/avx-vzeroupper-14.c: Replace -O0 with -O2. * gcc.target/i386/avx-vzeroupper-15.c: Likewise. * gcc.target/i386/avx-vzeroupper-16.c: Likewise. * gcc.target/i386/avx-vzeroupper-17.c: Likewise. * gcc.target/i386/avx-vzeroupper-20.c: New. * gcc.target/i386/avx-vzeroupper-21.c: Likewise. * gcc.target/i386/avx-vzeroupper-22.c: Likewise. * gcc.target/i386/avx-vzeroupper-23.c: Likewise. * gcc.target/i386/avx-vzeroupper-24.c: Likewise. * gcc.target/i386/avx-vzeroupper-25.c: Likewise. * gcc.target/i386/avx-vzeroupper-26.c: Likewise. Added: trunk/gcc/testsuite/gcc.target/i386/avx-vzeroupper-20.c trunk/gcc/testsuite/gcc.target/i386/avx-vzeroupper-21.c trunk/gcc/testsuite/gcc.target/i386/avx-vzeroupper-22.c trunk/gcc/testsuite/gcc.target/i386/avx-vzeroupper-23.c trunk/gcc/testsuite/gcc.target/i386/avx-vzeroupper-24.c trunk/gcc/testsuite/gcc.target/i386/avx-vzeroupper-25.c trunk/gcc/testsuite/gcc.target/i386/avx-vzeroupper-26.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/i386/i386.c trunk/gcc/config/i386/i386.h trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.target/i386/avx-vzeroupper-10.c trunk/gcc/testsuite/gcc.target/i386/avx-vzeroupper-11.c trunk/gcc/testsuite/gcc.target/i386/avx-vzeroupper-14.c trunk/gcc/testsuite/gcc.target/i386/avx-vzeroupper-15.c trunk/gcc/testsuite/gcc.target/i386/avx-vzeroupper-16.c trunk/gcc/testsuite/gcc.target/i386/avx-vzeroupper-17.c
