| commit | 0c3dd50eaecbfe267db1e90c2ade165da331e143 | |
| author | Paolo Bonzini <pbonzini@redhat.com> | |
| Wed, 7 Oct 2020 16:00:17 +0000 (7 17:00 +0100) | ||
| committer | Alex Bennée <alex.bennee@linaro.org> | |
| Fri, 9 Oct 2020 16:27:50 +0000 (9 17:27 +0100) | ||
| tree | 121f32ca28743fe50ca6b59fbf69cd5771ab666e | treesnapshot (tar.gz zip) |
| parent | 4a7c0bd9dcb08798c6f82e55b5a3423f7ee669f1 | commitdiff |
configure: fix performance regression due to PIC objects
Because most files in QEMU are grouped into static libraries, Meson conservatively
compiles them with -fPIC. This is overkill and produces slowdowns up to 20% on
some TCG tests.
As a stopgap measure, use the b_staticpic option to limit the slowdown to
--enable-pie. https://github.com/mesonbuild/meson/pull/7760 will allow
us to use b_staticpic=false and let Meson do the right thing.
Reported-by: Ahmed Karaman <ahmedkrmn@outlook.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200924092314.1722645-57-pbonzini@redhat.com>
Message-Id: <20201007160038.26953-2-alex.bennee@linaro.org>
Because most files in QEMU are grouped into static libraries, Meson conservatively
compiles them with -fPIC. This is overkill and produces slowdowns up to 20% on
some TCG tests.
As a stopgap measure, use the b_staticpic option to limit the slowdown to
--enable-pie. https://github.com/mesonbuild/meson/pull/7760 will allow
us to use b_staticpic=false and let Meson do the right thing.
Reported-by: Ahmed Karaman <ahmedkrmn@outlook.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200924092314.1722645-57-pbonzini@redhat.com>
Message-Id: <20201007160038.26953-2-alex.bennee@linaro.org>
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