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2024-11-05tests/fp: Explicitly set 2-NaN propagation rulePeter Maydell
Explicitly set a 2-NaN propagation rule in the softfloat tests. In meson.build we put -DTARGET_ARM in fpcflags, and so we should select here the Arm propagation rule of float_2nan_prop_s_ab. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20241025141254.2141506-3-peter.maydell@linaro.org
2022-04-21compiler.h: replace QEMU_NORETURN with G_NORETURNMarc-André Lureau
G_NORETURN was introduced in glib 2.68, fallback to G_GNUC_NORETURN in glib-compat. Note that this attribute must be placed before the function declaration (bringing a bit of consistency in qemu codebase usage). Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Warner Losh <imp@bsdimp.com> Message-Id: <20220420132624.2439741-20-marcandre.lureau@redhat.com>
2021-05-16softfloat: Move muladd_floats to softfloat-parts.c.incRichard Henderson
Rename to parts$N_muladd. Implement float128_muladd with FloatParts128. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2021-05-16tests/fp: add quad support to the benchmark utilityAlex Bennée
Currently this only support softfloat calculations because working out if the hardware supports 128 bit floats needs configure magic. The 3 op muladd operation is currently unimplemented so commented out for now. Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20201020163738.27700-8-alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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>