[cfe-commits] [PATCH] struct{bool} -> int function argument coercion emits an invalid store on ARM

[Evgeniy Stepanov]

Hi,

this is a fix for PR11905.

The current behaviour when generation a function prolog for arguments
of coerced types is to allocate a stack temp of the real argument type
and store the argument(s) there. This is wrong, because storage size
of the coerce-to type can be larger than that of the real type.

The new behaviour is to allocate a temp of the coerced type, copy it,
and then reference through a bitcasted pointer of the real type.

Please review.
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