[llvm-commits] Patch to fix byval parameters in the MSP430 backend

[Job Noorman]

I also posted this on the bugzilla: http://llvm.org/bugs/show_bug.cgi?id=14096

I noticed that the 'byval' parameter attribute is ignored in the MSP430 
backend. This causes functions that take a struct as argument to miscompile. 
Specifically, structs that should be passed by value are passed as a pointer 
instead.

I have attached a simple patch that addresses this problem.
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