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i.e. r1/r12/rp are saved/restored regardless of scheduling/luck TODO: calls to external symbols, indirect (function descriptor) calls, performance (we're being paranoid right now) BUG: the code for handling calls to vararg functions breaks if FP args are passed (this will make printf() go haywire so a bunch of tests will fail) BUG: this seems to trigger some legalize nastiness git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24942 91177308-0d34-0410-b5e6-96231b3b80d8