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

from 5ec4990bc77 c++: Avoid bogus -Wunused with recent change new a3ff15afb4c Dump reason why threads are being cancelled and abstract code. new 779275c0835 Improve backwards threader debugging dumps. new 62099645c20 Abstract PHI and forwarder block checks in jump threader. new 01005550377 Do not assume loop header threading in backward threader. new 3ccb523bdd7 libgcc, soft-float: Fix strong_alias macro use for Darwin.

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Summary of changes: gcc/tree-ssa-threadbackward.c | 51 ++++++++++++++++++++++++++++++------ gcc/tree-ssa-threadedge.c | 25 +++++++++++++----- gcc/tree-ssa-threadupdate.c | 56 +++++++++++++++++++++------------------- libgcc/config/i386/sfp-machine.h | 20 +++++++++++--- 4 files changed, 108 insertions(+), 44 deletions(-)