David Majnemer 273bff4713 WinCOFF: Add support for -fdata-sections ...

This is a pretty straight forward translation for COFF, we just need to
stick the data in a COMDAT section marked as
IMAGE_COMDAT_SELECT_NODUPLICATES.

N.B. We must be careful to avoid sticking entities with private linkage
in COMDAT groups.  COFF is pretty hostile to the renaming of entities so
we must be careful to disallow GlobalVariables with unstable names.

llvm-svn: 204703

2014-03-25 06:14:26 +00:00

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