PNaCl: Implement computed gotos (indirectbr) by expanding out to switches

tools/opt/opt.cpp

 //===- opt.cpp - The LLVM Modular Optimizer -------------------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // Optimizations may be specified an arbitrary number of times on the command
@@ skipping 601 matching lines @@
   initializeInstrumentation(Registry);
   initializeTarget(Registry);
   // @LOCALMOD-BEGIN
   initializeAddPNaClExternalDeclsPass(Registry);
   initializeCanonicalizeMemIntrinsicsPass(Registry);
   initializeExpandArithWithOverflowPass(Registry);
   initializeExpandByValPass(Registry);
   initializeExpandConstantExprPass(Registry);
   initializeExpandCtorsPass(Registry);
   initializeExpandGetElementPtrPass(Registry);
+  initializeExpandIndirectBrPass(Registry);
   initializeExpandSmallArgumentsPass(Registry);
   initializeExpandStructRegsPass(Registry);
   initializeExpandTlsConstantExprPass(Registry);
   initializeExpandTlsPass(Registry);
   initializeExpandVarArgsPass(Registry);
   initializeFlattenGlobalsPass(Registry);
   initializeGlobalCleanupPass(Registry);
   initializeInsertDivideCheckPass(Registry);
   initializePNaClABIVerifyFunctionsPass(Registry);
   initializePNaClABIVerifyModulePass(Registry);
@@ skipping 293 matching lines @@
     }
   }
 // @LOCALMOD-END
 
   // Declare success.
   if (!NoOutput || PrintBreakpoints)
     Out->keep();
 
   return 0;
 }