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Reid Kleckner 60c1740ad6 ARM / x86_64 varargs: Don't save regparms in prologue without va_start
There's no need to do this if the user doesn't call va_start. In the
future, we're going to have thunks that forward these register
parameters with musttail calls, and they won't need these spills for
handling va_start.

Most of the test suite changes are adding va_start calls to existing
tests to keep things working.

llvm-svn: 216294
2014-08-22 21:59:26 +00:00
..
2014-01-11 21:06:00 +00:00
2014-04-03 17:35:22 +00:00
2014-06-24 15:45:59 +00:00