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Author SHA1 Message Date
Louis Gerbarg
30a2dcd984 Allow AArch64FastISel to degrade graceully in the presence of an MVT::i128 
Currently AArch64FastISel crashes if it tries to extend an integer into an
MVT::i128. This can happen by creating 128 bit integers like so:

  typedef unsigned int uint128_t __attribute__((mode(TI)));
  typedef int sint128_t __attribute__((mode(TI)));

This patch makes EmitIntExt check for their presence and then falls back to
SelectionDAG.

Tests included.

rdar://17516686

llvm-svn: 212492
 2014-07-07 21:37:51 +00:00