Subzero: Emit functions and global initializers in a separate thread.

src/IceCfgNode.cpp

Index: src/IceCfgNode.cpp
diff --git a/src/IceCfgNode.cpp b/src/IceCfgNode.cpp
index 8fb06b81f214346e61afa116688669d2d338b7f7..50e434853d7d9e0dd3053b809f20e69d4ced8eac 100644
--- a/src/IceCfgNode.cpp
+++ b/src/IceCfgNode.cpp
@@ -892,7 +892,7 @@ void CfgNode::emit(Cfg *Func) const {
 
 void CfgNode::emitIAS(Cfg *Func) const {
   Func->setCurrentNode(this);
-  Assembler *Asm = Func->getAssembler<Assembler>();
+  Assembler *Asm = Func->getAssembler<>();
   Asm->BindCfgNodeLabel(getIndex());
   for (const Inst &I : Phis) {
     if (I.isDeleted())