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| author | Markus Trippelsdorf <markus@trippelsdorf.de> | 2017-12-17 12:01:25 +0000 |
|---|---|---|
| committer | Markus Trippelsdorf <trippels@gcc.gnu.org> | 2017-12-17 12:01:25 +0000 |
| commit | a2ef9558d17aeb038cbc8a66a203f7a8e6c6e81e (patch) | |
| tree | b25c6818a61fd8d5752c2aa8a73c912df16c2234 /gcc/fortran/interface.c | |
| parent | d7f06bc3f7e1e1da11c065cc96a81f15bd0ca68f (diff) | |
| download | gcc-a2ef9558d17aeb038cbc8a66a203f7a8e6c6e81e.zip gcc-a2ef9558d17aeb038cbc8a66a203f7a8e6c6e81e.tar.gz gcc-a2ef9558d17aeb038cbc8a66a203f7a8e6c6e81e.tar.bz2 | |
Correct imul (r64) latency for modern Intel CPUs
Since Sandybridge the 64bit multiplication latency is three cycles, not
four. So update the costs to reflect reality.
* x86-tune-costs.h (skylake_cost, core_cost): Decrease r64 multiply
latencies.
* gcc.target/i386/wmul-3.c: New test.
From-SVN: r255760
Diffstat (limited to 'gcc/fortran/interface.c')
0 files changed, 0 insertions, 0 deletions