Iasm and obj lowering for advanced switch lowering.

src/IceGlobalContext.cpp

Index: src/IceGlobalContext.cpp
diff --git a/src/IceGlobalContext.cpp b/src/IceGlobalContext.cpp
index 51ca3f08240d49b4252358ef2c62389b2c0f05de..8bfc5dd5022aa126edeedf0b8db9b698f3b8ea1a 100644
--- a/src/IceGlobalContext.cpp
+++ b/src/IceGlobalContext.cpp
@@ -385,6 +385,8 @@ void GlobalContext::emitFileHeader() {
 
 void GlobalContext::lowerConstants() { DataLowering->lowerConstants(); }
 
+void GlobalContext::lowerJumpTables() { DataLowering->lowerJumpTables(); }
+
 void GlobalContext::lowerGlobals(const IceString &SectionSuffix) {
   TimerMarker T(TimerStack::TT_emitGlobalInitializers, this);
   const bool DumpGlobalVariables = BuildDefs::dump() && Flags.getVerbose() &&
@@ -876,6 +878,13 @@ ConstantList GlobalContext::getConstantExternSyms() {
   return getConstPool()->ExternRelocatables.getConstantPool();
 }
 
+JumpTableData &GlobalContext::addJumpTable(IceString FuncName, SizeT Id,
+                                           SizeT NumTargets) {
+  auto JumpTables = getJumpTables();
+  JumpTables->emplace_back(FuncName, Id, NumTargets);
+  return JumpTables->back();
+}
+
 TimerStackIdT GlobalContext::newTimerStackID(const IceString &Name) {
   if (!BuildDefs::dump())
     return 0;