Gerolf Hoflehner 97c383bc36 MachineCombiner Pass for selecting faster instruction sequence on AArch64 ...

Re-commit of r214832,r21469 with a work-around that
avoids the previous problem with gcc build compilers

The work-around is to use SmallVector instead of ArrayRef
of basic blocks in preservesResourceLen()/MachineCombiner.cpp

llvm-svn: 215151

2014-08-07 21:40:58 +00:00

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