Commit Graph

12 Commits

Author SHA1 Message Date
Adhemerval Zanella
3c0265394d PowerPC: modf optimization
This patch implements modf/modff optimization for POWER by focus
on FP operations instead of relying in integer ones.
2013-04-23 13:38:52 -05:00
Siddhesh Poyarekar
037714dd49 Add benchmark inputs for cos and tan 2013-04-17 17:45:55 +05:30
Siddhesh Poyarekar
4856bcd2df Define NOT_IN_libc when compiling benchmark programs 2013-04-16 18:34:03 +05:30
Siddhesh Poyarekar
a296407432 Add target bench-clean 2013-04-16 14:07:21 +05:30
Siddhesh Poyarekar
206a669911 Write to bench.out-tmp only once
Appending benchmark program output on every run could result in a case
where the benchmark run was cancelled, resulting in a partially
written file.  This file gets used again on the next run, resulting in
results being appended to old results.

It could have been possible to remove the file before every benchmark
run, but it is easier to just write the output to bench.out-tmp only
once.
2013-04-15 13:53:35 +05:30
Siddhesh Poyarekar
acb4325fc7 Rebuild benchmark sources when Makefile is updated
Benchmark programs are generated using parameters from the Makefile,
so it is necessary to rebuild them whenever the parameters in the
Makefile are updated.  Hence, added a dependency for the generated C
source on the Makefile so that it gets regenerated when the Makefile
is updated.
2013-04-15 11:17:01 +05:30
Siddhesh Poyarekar
8fc1bee546 Move bench target to benchtests
The bench target will only be used within the benchtests directory.
2013-04-12 15:01:44 +05:30
Siddhesh Poyarekar
64aabd4b80 Add benchmark inputs for atan
Add separate inputs for slow and fast paths of atan
2013-04-03 15:50:15 +05:30
Siddhesh Poyarekar
92e3664bb5 Add benchmark inputs for sin 2013-04-02 17:48:47 +05:30
Siddhesh Poyarekar
81f311c2ee Add benchmark tests for slowpow and slowexp
Separate benchmarks for the fast and slow implementations of pow and
exp since measuring both together doesn't make sense.  Adjust the
iterations for pow and exp accordingly so that they run long enough
for the measurements to be meaningful.
2013-04-02 17:45:45 +05:30
Adhemerval Zanella
60c414c346 PowerPC: remove branch prediction from rint implementation
The branch prediction hints is actually hurts performance in this case.
The assembly implementation make two assumptions: 1. 'fabs (x) < 2^52'
is unlikely and 2. 'x > 0.0' is unlike (if 1. is true). Since it a
general floating point function, expected input is not bounded and then
it is better to let the hardware handle the branches.
2013-04-01 06:36:51 -05:00
Siddhesh Poyarekar
8cfdb7e056 Framework for performance benchmarking of functions
See benchtests/Makefile to know how to use it.
2013-03-15 12:30:03 +05:30