[x86] Put 'C' after 'i' on all the AVX-512 intrisics that take const ints. 'C' is a suffix modifier not a prefix modififier. Also put 'C' on the pointers in all of the gather instrinsics. I think they previously had one due to the misordering. I'm still thinking the 'iC' actually need to be a 'Ii' since they really require an ICE.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@224913 91177308-0d34-0410-b5e6-96231b3b80d8
[x86] Fix an accidental commit of a change from Ii to iC on __builtin_ia32_cmpps512_mask.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@224914 91177308-0d34-0410-b5e6-96231b3b80d8
Don't crash on malformed attributes in an incorrect location.

r168626 added nicer diagnostics for attributes in the wrong places, such as
after the `final` on a class.  To do this, it added code that did high-level
pattern matching for e.g. 'final' 'alignas' '(' and then skipped until the
closing ')'.  If it saw that, it then went down the regular class parsing
path and then called MaybeParseCXX11Attributes() to parse the attribute after
the 'final' using real attribute parsing code.  On invalid attributes, the
real attribute parsing code could eat more tokens than the pattern matching
code and for example skip past the '{' starting the class, which would then
lead to an assert.  To prevent this, check for a good state after calling
MaybeParseCXX11Attributes() (which morphed into CheckMisplacedCXX11Attribute()
in r175575) and bail out if things look bleak.

Found by SLi's afl bot.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@224915 91177308-0d34-0410-b5e6-96231b3b80d8