Parse: Don't reorder tokens using ConsumeToken

ConsumeToken doesn't work with special tokens.  Instead, just use PP.Lex
to eat the token.

This fixes PR21817.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@224232 91177308-0d34-0410-b5e6-96231b3b80d8
First patch with codegen of the 'omp for' directive. It implements
the simplest case, which is used when no chunk_size is specified in
the schedule(static) or no 'schedule' clause is specified - the
iteration space is divided by the library into chunks that are
approximately equal in size, and at most one chunk is distributed
to each thread. In this case, we do not need an outer loop in each
thread - each thread requests once which iterations range it should
handle (using __kmpc_for_static_init runtime call) and then runs the
inner loop on this range.

Differential Revision: http://reviews.llvm.org/D5865



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@224233 91177308-0d34-0410-b5e6-96231b3b80d8
Test for 'omp for' (for r224233).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@224234 91177308-0d34-0410-b5e6-96231b3b80d8
Sema: Don't leave switch stack inconsistent when recovering

We would exit Sema::ActOnFinishSwitchStmt early if we didn't have a
body.  This would leave an extra SwitchStmt on the SwitchStack.

This fixes PR21841.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@224237 91177308-0d34-0410-b5e6-96231b3b80d8