Subzero. Adds a pass for target-specific helper call generation.

src/IceTargetLoweringARM32.cpp

 //===- subzero/src/IceTargetLoweringARM32.cpp - ARM32 lowering ------------===//
 //
 //                        The Subzero Code Generator
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file
@@ skipping 220 matching lines @@
     Hi->setMustHaveReg();
   }
 }
 } // end of anonymous namespace
 
 void TargetARM32::translateO2() {
   TimerMarker T(TimerStack::TT_O2, Func);
 
   // TODO(stichnot): share passes with X86?
   // https://code.google.com/p/nativeclient/issues/detail?id=4094
+  genTargetHelperCalls();
 
   // Do not merge Alloca instructions, and lay out the stack.
   static constexpr bool SortAndCombineAllocas = false;
   Func->processAllocas(SortAndCombineAllocas);
   Func->dump("After Alloca processing");
 
   if (!Ctx->getFlags().getPhiEdgeSplit()) {
     // Lower Phi instructions.
     Func->placePhiLoads();
     if (Func->hasError())
@@ skipping 86 matching lines @@
   // Nop insertion
   if (Ctx->getFlags().shouldDoNopInsertion()) {
     Func->doNopInsertion();
   }
 }
 
 void TargetARM32::translateOm1() {
   TimerMarker T(TimerStack::TT_Om1, Func);
 
   // TODO: share passes with X86?
+  genTargetHelperCalls();
 
   // Do not merge Alloca instructions, and lay out the stack.
   static constexpr bool SortAndCombineAllocas = false;
   Func->processAllocas(SortAndCombineAllocas);
   Func->dump("After Alloca processing");
 
   Func->placePhiLoads();
   if (Func->hasError())
     return;
   Func->placePhiStores();
@@ skipping 5024 matching lines @@
   // Technically R9 is used for TLS with Sandboxing, and we reserve it.
   // However, for compatibility with current NaCl LLVM, don't claim that.
   Str << ".eabi_attribute 14, 3   @ Tag_ABI_PCS_R9_use: Not used\n";
 }
 
 llvm::SmallBitVector TargetARM32::TypeToRegisterSet[IceType_NUM];
 llvm::SmallBitVector TargetARM32::RegisterAliases[RegARM32::Reg_NUM];
 llvm::SmallBitVector TargetARM32::ScratchRegs;
 
 } // end of namespace Ice