Merging r247435:

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r247435 | david.majnemer | 2015-09-11 13:34:34 -0400 (Fri, 11 Sep 2015) | 8 lines

[X86] Make sure startproc/endproc are paired

We used different conditions to determine if we should emit startproc vs
endproc.  Use the same condition to ensure that they will always be
paired.

This fixes PR24374.

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llvm-svn: 253742