Fix extraStack calculation -- I think in fact it might be getting a bit *too*
much stack, but that's better than not enough, which leads to miscompilations.

Fix FP vaarg.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18079 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed