Add default calling convention support for regcall.

Description

Add default calling convention support for regcall.

Added support for regcall as default calling convention. Also added code to
exclude main when applying default calling conventions.

Patch-By: eandrews

Differential Revision: https://reviews.llvm.org/D39210

Details

Committed
erichkeaneNov 2 2017, 2:08 PM
Differential Revision
D39210: Add default calling convention support for regcall.
Parents
rL317267: Add missing header guards.
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