[llvm-commits] PATCH: Tailcallopt x86 byval argument handling

[Arnold Schwaighofer]

>  i'll be back
... and here i am. no more checking for registers. removed the check
for the known registers (e/rcx,si,di) that are overwritten by byval
lowering. now all register arguments are protected by a copyto/from
virtual reg sequence the register allocator does the rest of the work.

regards arnold
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