Stuart Hastings 65d0bc94b4 Avoid fusing bitcasts with dynamic allocas if the amount-to-allocate
might overflow.  Re-typing the alloca to a larger type (e.g. double)
hoists a shift into the alloca, potentially exposing overflow in the
expression.  rdar://problem/9265821

llvm-svn: 132926
2011-06-13 18:48:49 +00:00
..
2011-05-22 01:16:00 +00:00