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Author SHA1 Message Date
Matt Arsenault 58fc8082a8 OpenCL: Use length modifier for warning on vector printf arguments 
Re-enable format string warnings on printf.

The warnings are still incomplete. Apparently it is undefined to use a
vector specifier without a length modifier, which is not currently
warned on. Additionally, type warnings appear to not be working with
the hh modifier, and aren't warning on all of the special restrictions
from c99 printf.

llvm-svn: 352540
 2019-01-29 20:49:54 +00:00
Matt Arsenault 297afb14ec Revert "OpenCL: Extend argument promotion rules to vector types" 
This reverts r348083. This was based on a misreading of the spec
for printf specifiers.

Also revert r343653, as without a subsequent patch, a correctly
specified format for a vector will incorrectly warn.

Fixes bug 40491.

llvm-svn: 352539
 2019-01-29 20:49:47 +00:00
Matt Arsenault a01151294a OpenCL: Mark printf format string argument 
Fixes not warning on format string errors.

llvm-svn: 343653
 2018-10-03 02:01:19 +00:00