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3 Commits

Author SHA1 Message Date
Tim Northover 0937679443 Add the C99 hex-float assembly syntax to our extension document. 
As Ben pointed out, GAS doesn't support this syntax so we should give at least
some warning that it might not be portable.

llvm-svn: 188377
 2013-08-14 15:27:20 +00:00
Nico Rieck a37acf702d MC: Implement COFF .linkonce directive 
llvm-svn: 185753
 2013-07-06 12:13:10 +00:00
Nico Rieck 1da4529b15 MC: Support COFF image-relative MCSymbolRefs 
Add support for the COFF relocation types IMAGE_REL_I386_DIR32NB and
IMAGE_REL_AMD64_ADDR32NB for 32- and 64-bit respectively. These are
similar to normal 4-byte relocations except that they do not include
the base address of the image.

Image-relative relocations are used for debug information (32-bit) and
SEH unwind tables (64-bit).

A new MCSymbolRef variant called 'VK_COFF_IMGREL32' is introduced to
specify such relocations. For AT&T assembly, this variant can be accessed
using the symbol suffix '@imgrel'.

llvm-svn: 179240
 2013-04-10 23:28:17 +00:00