[MSP430] Fix for byval parameters

[Quuxplusone]

Bugzilla Link	PR14096
Status	NEW
Importance	P enhancement
Reported by	Job Noorman (jobnoorman@gmail.com)
Reported on	2012-10-16 07:56:37 -0700
Last modified on	2012-10-17 05:08:17 -0700
Version	trunk
Hardware	PC Linux
CC	anton@korobeynikov.info, llvm-bugs@lists.llvm.org, pawel@32bitmicro.com
Fixed by commit(s)
Attachments	byval.diff (3959 bytes, text/plain) byval.diff (4812 bytes, text/plain)
Blocks
Blocked by
See also

Created attachment 9356
Patch

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.

[Quuxplusone]

Attached byval.diff (3959 bytes, text/plain): Patch

[Quuxplusone]

Attached byval.diff (4812 bytes, text/plain): Patch including testcase