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2019-01-22fp-bench: remove wrong exponent raise in fill_randomEmilio G. Cota
At this point random_ops[] only contains normals, so there's no need to do anything to them. In fact, raising the exponent here can make the output !normal, which is precisely what the comment says we want to avoid. Signed-off-by: Emilio G. Cota <cota@braap.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-01-22fp-bench: fix update_random_opsEmilio G. Cota
The second test in the branches is wrong; fix while converting to a switch statement, which is easier to get right. Signed-off-by: Emilio G. Cota <cota@braap.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2018-12-17tests/fp: add fp-benchEmilio G. Cota
These microbenchmarks will allow us to measure the performance impact of FP emulation optimizations. Note that we can measure both directly the impact on the softfloat functions (with "-t soft"), or the impact on an emulated workload (call with "-t host" and run under qemu user-mode). Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>