Evgeniy Stepanov
2abb78caa6
[safestack] Fix assertion failure in stack coloring. ...
This is a fix for PR30318.
Clang may generate IR where an alloca is already live when entering a
BB with lifetime.start. In this case, conservatively extend the
alloca lifetime all the way back to the block entry.
llvm-svn: 281784
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2abb78caa6