Merging r208501:

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r208501 | hfinkel | 2014-05-11 12:23:29 -0400 (Sun, 11 May 2014) | 9 lines

[PowerPC] On PPC32, 128-bit shifts might be runtime calls

The counter-loops formation pass needs to know what operations might be
function calls (because they can't appear in counter-based loops). On PPC32,
128-bit shifts might be runtime calls (even though you can't use __int128 on
PPC32, it seems that SROA might form them).

Fixes PR19709.

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llvm-svn: 208916