PNaCl: Extend ExpandMulWithOverflow pass to handle uadd.with.overflow too

lib/Transforms/NaCl/PNaClABISimplify.cpp

 //===-- PNaClABISimplify.cpp - Lists PNaCl ABI simplification passes ------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This file implements the meta-passes "-pnacl-abi-simplify-preopt"
@@ skipping 10 matching lines @@
 
 using namespace llvm;
 
 void llvm::PNaClABISimplifyAddPreOptPasses(PassManager &PM) {
   // LowerInvoke prevents use of C++ exception handling, which is not
   // yet supported in the PNaCl ABI.
   PM.add(createLowerInvokePass());
   // Remove landingpad blocks made unreachable by LowerInvoke.
   PM.add(createCFGSimplificationPass());
 
+  PM.add(createExpandArithWithOverflowPass());
   PM.add(createExpandVarArgsPass());
   PM.add(createExpandCtorsPass());
   PM.add(createResolveAliasesPass());
   PM.add(createExpandTlsPass());
   // GlobalCleanup needs to run after ExpandTls because
   // __tls_template_start etc. are extern_weak before expansion
   PM.add(createGlobalCleanupPass());
   // Strip dead prototytes to appease the intrinsic ABI checks
   // (ExpandVarArgs leaves around var-arg intrinsics).
   PM.add(createStripDeadPrototypesPass());
@@ skipping 18 matching lines @@
   // We should not place arbitrary passes after ExpandConstantExpr
   // because they might reintroduce ConstantExprs.
   PM.add(createExpandConstantExprPass());
   // ExpandGetElementPtr must follow ExpandConstantExpr to expand the
   // getelementptr instructions it creates.
   PM.add(createExpandGetElementPtrPass());
   // ReplacePtrsWithInts assumes that getelementptr instructions and
   // ConstantExprs have already been expanded out.
   PM.add(createReplacePtrsWithIntsPass());
 }