[llvm-commits] [PATCH][Review Request] Adding isReadOnlyData to SectionRef/ObjectFile interface

[Kaylor, Andrew]

Patch by Ashok Thirumurthi.

This patch adds new functions to the SectionRef and ObjectFile interfaces to determine whether or not a section is meant to be read-only.  These functions will be used by the MCJIT RuntimeDyld to give hints to the memory manager during the object loading process in a future patch.

Currently, the functions are only implemented for ELF.  We weren't 100% certain of the proper implementation for MachO or COFF, so it seemed best to just leave a comment and return 'false' which will result in the dynamic loader continuing to behave exactly as it currently does.

-Andy
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