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unknown user pushed a change to branch master in repository gcc.

from b1d1e2b54c6 i386, expand: Optimize also 256-bit and 512-bit permutatati [...] new 2b356e689c3 hurd: libgcc unwinding over signal trampolines with SIGINFO new c23aea6edc9 gcc-changelog: Allow modifications to old ChangeLogs without entry

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Summary of changes: contrib/gcc-changelog/git_commit.py | 12 +++++-- contrib/gcc-changelog/test_email.py | 4 +++ contrib/gcc-changelog/test_patches.txt | 20 ++++++++++++ libgcc/config/i386/gnu-unwind.h | 60 ++++++++++++++++++++++++++-------- 4 files changed, 80 insertions(+), 16 deletions(-)