Subzero. RAII NaCl Bundling.

src/IceTargetLowering.cpp

 //===- subzero/src/IceTargetLowering.cpp - Basic lowering implementation --===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 134 matching lines @@
     ::X::staticInit(Flags);                                                    \
   } break;
 #include "llvm/Config/SZTargets.def"
 #undef SUBZERO_TARGET
   }
 }
 
 TargetLowering::TargetLowering(Cfg *Func)
     : Func(Func), Ctx(Func->getContext()), Context() {}
 
+TargetLowering::AutoBundle::AutoBundle(TargetLowering *Target,
+                                       InstBundleLock::Option Option)
+    : Target(Target),
+      NeedSandboxing(Target->Ctx->getFlags().getUseSandboxing()) {
+  assert(!Target->AutoBundling);
+  Target->AutoBundling = true;
+  if (NeedSandboxing) {
+    Target->_bundle_lock(Option);
+  }
+}
+
+TargetLowering::AutoBundle::~AutoBundle() {
+  assert(Target->AutoBundling);
+  Target->AutoBundling = false;
+  if (NeedSandboxing) {
+    Target->_bundle_unlock();
+  }
+}
+
 void TargetLowering::genTargetHelperCalls() {
   for (CfgNode *Node : Func->getNodes()) {
     Context.init(Node);
     while (!Context.atEnd()) {
       PostIncrLoweringContext _(Context);
       genTargetHelperCallFor(Context.getCur());
     }
   }
 }
 
@@ skipping 517 matching lines @@
   case Target_##X:                                                             \
     return ::X::createTargetHeaderLowering(Ctx);
 #include "llvm/Config/SZTargets.def"
 #undef SUBZERO_TARGET
   }
 }
 
 TargetHeaderLowering::~TargetHeaderLowering() = default;
 
 } // end of namespace Ice