Richard Smith 9a56882e53 Add driver arguments -ftemplate-depth=N and -fconstexpr-depth=N, with the same ...

semantics and defaults as the corresponding g++ arguments. The historical g++
argument -ftemplate-depth-N is kept for compatibility, but modern g++ versions
no longer document that option.

Add -cc1 argument -fconstexpr-depth N to implement the corresponding
functionality.

The -ftemplate-depth=N part of this fixes PR9890.

llvm-svn: 145045

2011-11-21 19:36:32 +00:00

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