Add blurb about WebCL Validator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@195373 91177308-0d34-0410-b5e6-96231b3b80d8
Merging r195333:
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r195333 | kcc | 2013-11-21 01:28:16 -0800 (Thu, 21 Nov 2013) | 1 line

add 'REQUIRES: asserts' to a test that uses 'llc -debug'; this fixes the no-asserts build
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@195374 91177308-0d34-0410-b5e6-96231b3b80d8
Merging r195339:
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r195339 | chapuni | 2013-11-21 02:55:15 -0800 (Thu, 21 Nov 2013) | 5 lines

Revert r195317 (and r195333), "Teach ISel not to optimize 'optnone' functions."

It broke, at least, i686 target. It is reproducible with "llc -mtriple=i686-unknown".

FYI, it didn't appear to add either "-O0" or "-fast-isel".
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@195375 91177308-0d34-0410-b5e6-96231b3b80d8