[bindings/go] Add coroutine passes

[aykevl]

Summary

Add Go bindings for CoroEarly, CoroSplit, CoroElide and CoroCleanup.

bindings/go/llvm/transforms_coroutines.go

+//===- transforms_scalar.go - Bindings for coroutines ---------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines bindings for the coroutines component.
+//
+//===----------------------------------------------------------------------===//
+
+package llvm
+
+/*
+#include "llvm-c/Transforms/Coroutines.h"
+*/
+import "C"
+
+func (pm PassManager) AddCoroEarlyPass()               { C.LLVMAddCoroEarlyPass(pm.C) }
+func (pm PassManager) AddCoroSplitPass()               { C.LLVMAddCoroSplitPass(pm.C) }
+func (pm PassManager) AddCoroElidePass()               { C.LLVMAddCoroElidePass(pm.C) }
+func (pm PassManager) AddCoroCleanupPass()             { C.LLVMAddCoroCleanupPass(pm.C) }

tools/llvm-go/llvm-go.go

var components = []string{
   "all-targets",
   "analysis",
   "asmparser",
   "asmprinter",
   "bitreader",
   "bitwriter",
   "codegen",
   "core",
+  "coroutines",
   "debuginfodwarf",
   "executionengine",
   "instrumentation",
   "interpreter",
   "ipo",
   "irreader",
   "linker",
   "mc",