Revert "[PowerPC][ELFv2ABI] Allocate parameter area on-demand to reduce stack frame size"

This reverts commit r296771.

We found some wide spread test failures internally. I'm working on a
testcase. Politely revert the patch in the mean time. :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297124 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed