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| author | Jiufu Guo <guojiufu@linux.ibm.com> | 2019-11-11 06:30:38 +0000 |
|---|---|---|
| committer | Jiufu Guo <guojiufu@gcc.gnu.org> | 2019-11-11 06:30:38 +0000 |
| commit | 48f657953fe5f90218003c93feafdb3158e6d3d2 (patch) | |
| tree | 9723a1ee3ec29985e19ff7b9bd0b48b9bfb5892e /gcc/fortran/f95-lang.c | |
| parent | 103cba80bd84f0f3c7e644783e1fb7154d07f522 (diff) | |
| download | gcc-48f657953fe5f90218003c93feafdb3158e6d3d2.zip gcc-48f657953fe5f90218003c93feafdb3158e6d3d2.tar.gz gcc-48f657953fe5f90218003c93feafdb3158e6d3d2.tar.bz2 | |
rs6000: Refine small loop unroll in loop_unroll_adjust hook
In this patch, loop unroll adjust hook is introduced for powerpc. We
can do target related heuristic adjustment in this hook. In this patch,
-funroll-loops is enabled for small loops at O2 and above with an option
-munroll-small-loops to guard the small loops unrolling, and it works
fine with -flto.
gcc/
2019-11-11 Jiufu Guo <guojiufu@linux.ibm.com>
PR tree-optimization/88760
* gcc/config/rs6000/rs6000.opt (-munroll-only-small-loops): New option.
* gcc/common/config/rs6000/rs6000-common.c
(rs6000_option_optimization_table) [OPT_LEVELS_2_PLUS_SPEED_ONLY]:
Turn on -funroll-loops and -munroll-only-small-loops.
[OPT_LEVELS_ALL]: Turn off -fweb and -frename-registers.
* config/rs6000/rs6000.c (rs6000_option_override_internal): Remove
set of PARAM_MAX_UNROLL_TIMES and PARAM_MAX_UNROLLED_INSNS.
Turn off -munroll-only-small-loops for explicit -funroll-loops.
(TARGET_LOOP_UNROLL_ADJUST): Add loop unroll adjust hook.
(rs6000_loop_unroll_adjust): Define it. Use -munroll-only-small-loops.
gcc.testsuite/
2019-11-11 Jiufu Guo <guojiufu@linux.ibm.com>
PR tree-optimization/88760
* gcc.dg/pr59643.c: Update back to r277550.
From-SVN: r278034
Diffstat (limited to 'gcc/fortran/f95-lang.c')
0 files changed, 0 insertions, 0 deletions