Merging r205067:

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r205067 | ahatanaka | 2014-03-28 19:28:07 -0400 (Fri, 28 Mar 2014) | 7 lines

[x86] Fix printing of register operands with q modifier.

Emit 32-bit register names instead of 64-bit register names if the target does
not have 64-bit general purpose registers.

<rdar://problem/14653996>

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llvm-svn: 206055