swift234

During mandatory inlining, look at isTransparent() on the callee.

Mandatory inlining normally only looks at isTransparent() on the apply
instruction. This change makes it also inline in cases where the apply
is not marked isTransparent(), but the applied function is. This can
arise in cases where previous transparent inlining exposes new
opportunities, e.g. when a transparent function is passed as a parameter
to another transparent function.

Resolves rdar://problem/19419019.

Swift SVN r26516