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Author SHA1 Message Date
Amara Emerson 52cfb6a99a [ARM] Warn on deprecated IT blocks in v8 AArch32 assembly. 
Patch by Artyom Skrobov.

llvm-svn: 191885
 2013-10-03 09:31:51 +00:00
Joey Gouly 830c27ab2d [ARM] Fix the deprecation of MCR encodings that map to CP15{ISB,DSB,DMB}. 
llvm-svn: 190862
 2013-09-17 09:54:57 +00:00
Joey Gouly 904d8806ce Somehow this important part of the patch, where I actually check the Mask, 
got lost during my iterations of review.

Thanks to Hal for spotting it!

llvm-svn: 190604
 2013-09-12 14:23:19 +00:00
Joey Gouly 0e76fa7df5 Add an instruction deprecation feature to TableGen. 
The 'Deprecated' class allows you to specify a SubtargetFeature that the
instruction is deprecated on.

The 'ComplexDeprecationPredicate' class allows you to define a custom
predicate that is called to check for deprecation.
For example:
  ComplexDeprecationPredicate<"MCR">

would mean you would have to define the following function:
  bool getMCRDeprecationInfo(MCInst &MI, MCSubtargetInfo &STI,
                             std::string &Info)

Which returns 'false' for not deprecated, and 'true' for deprecated
and store the warning message in 'Info'.

The MCTargetAsmParser constructor was chaned to take an extra argument of
the MCInstrInfo class, so out-of-tree targets will need to be changed.

llvm-svn: 190598
 2013-09-12 10:28:05 +00:00
Joey Gouly 5d0564d2e6 [ARMv8] Add an assembler warning for the deprecated 'setend' instruction. 
llvm-svn: 187666
 2013-08-02 19:18:12 +00:00