First pass at emitIAS for branches and binding labels

src/assembler_ia32.cpp

Index: src/assembler_ia32.cpp
diff --git a/src/assembler_ia32.cpp b/src/assembler_ia32.cpp
index 2b80820558ec3e2826b6d06270801750c136e031..0d5f4b623d778cd5ec44b2b7319e70b08dd507e2 100644
--- a/src/assembler_ia32.cpp
+++ b/src/assembler_ia32.cpp
@@ -67,6 +67,37 @@ Address Address::ofConstPool(GlobalContext *Ctx, Assembler *Asm,
   return x86::Address::Absolute(Fixup);
 }
 
+AssemblerX86::~AssemblerX86() {
+#ifndef NDEBUG
+  for (const Label *Label : CfgNodeLabels) {
+    Label->FinalCheck();
+  }
+#endif
+}
+
+Label *AssemblerX86::GetOrCreateCfgNodeLabel(SizeT NodeNumber) {
+  Label *L = nullptr;
+  if (NodeNumber == CfgNodeLabels.size()) {
+    L = new (this->Allocate<Label>()) Label();
+    CfgNodeLabels.push_back(L);
+    return L;
+  }
+  if (NodeNumber > CfgNodeLabels.size()) {
+    CfgNodeLabels.resize(NodeNumber + 1);
+  }
+  L = CfgNodeLabels[NodeNumber];
+  if (!L) {
+    L = new (this->Allocate<Label>()) Label();
+    CfgNodeLabels[NodeNumber] = L;
+  }
+  return L;
+}
+
+void AssemblerX86::BindCfgNodeLabel(SizeT NodeNumber) {
+  Label *L = GetOrCreateCfgNodeLabel(NodeNumber);
+  this->Bind(L);
+}
+
 void AssemblerX86::call(GPRRegister reg) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0xFF);