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Use -funwind-tables on POWER 

Ideally, the GCC defaults should change as well, but let's put this into
redhat-rpm-config, too, similarly to -fasynchronous-unwind-tables.
This commit is contained in:
Florian Weimer 2018-02-28 10:45:09 +01:00
parent 71d7440127
commit d5133f9acc
3 changed files with 11 additions and 5 deletions
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3
buildflags.md
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@ -265,6 +265,9 @@ not), but their selection depends on the architecture:
architectures, `-fexceptions` (see above) still enables regular
unwind tables (or they are enabled by default even without this
option).
* `-funwind-tables`: A subset of the unwind information restricted
to actual call sites. Used on ppc64, ppc64le. Also implied by
`-fexceptions`.
In addition, `redhat-rpm-config` re-selects the built-in default
tuning in the `gcc` package. These settings are:

5
redhat-rpm-config.spec
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@ -6,7 +6,7 @@
Summary: Red Hat specific rpm configuration files
Name: redhat-rpm-config
Version: 103
Version: 104
Release: 1%{?dist}
# No version specified.
License: GPL+
@ -183,6 +183,9 @@ install -p -m 755 -t %{buildroot}%{_rpmconfigdir} kmod.prov
%{_rpmconfigdir}/macros.d/macros.kmp
%changelog
* Wed Feb 28 2018 Florian Weimer <fweimer@redhat.com> - 104-1
- Use -funwind-tables on POWER (#1536431, #1548847)
* Sun Feb 25 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 103-1
- Make %%ldconfig_post/%%ldconfig_postun parameterized

8
rpmrc
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@ -24,12 +24,12 @@ optflags: sparc64v %{__global_compiler_flags} -m64 -mcpu=niagara
optflags: m68k %{__global_compiler_flags}
optflags: ppc %{__global_compiler_flags} -m32
optflags: ppc %{__global_compiler_flags} -m32 -funwind-tables
optflags: ppciseries %{__global_compiler_flags} -m32
optflags: ppcpseries %{__global_compiler_flags} -m32
optflags: ppc64 %{__global_compiler_flags} -m64 -fstack-clash-protection
optflags: ppc64p7 %{__global_compiler_flags} -m64 -O3 -mcpu=power7 -mtune=power7 -fstack-clash-protection
optflags: ppc64le %{__global_compiler_flags} -m64 -mcpu=power8 -mtune=power8 -fstack-clash-protection
optflags: ppc64 %{__global_compiler_flags} -m64 -funwind-tables -fstack-clash-protection
optflags: ppc64p7 %{__global_compiler_flags} -m64 -O3 -mcpu=power7 -mtune=power7 -funwind-tables -fstack-clash-protection
optflags: ppc64le %{__global_compiler_flags} -m64 -mcpu=power8 -mtune=power8 -funwind-tables -fstack-clash-protection
optflags: ppc64iseries %{__global_compiler_flags} -m64
optflags: ppc64pseries %{__global_compiler_flags} -m64
optflags: ppc8260 %{__global_compiler_flags} -m32