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Rong Xu 33fafefbc5 [PGO] Fix PGO use ICE when there are unreachable BBs
For -O0 there might be unreachable BBs, which breaks the assumption that all the
BBs have an auxiliary data structure.  In this patch, we add another interface
called findBBInfo() so that a nullptr can be returned for the unreachable BBs
(and the callers can ignore those BBs).

This fixes the bug reported
https://llvm.org/bugs/show_bug.cgi?id=31209

Differential Revision: https://reviews.llvm.org/D27280

llvm-svn: 288528
2016-12-02 19:10:29 +00:00
..
2016-05-10 17:45:33 +00:00