Subzero. ARM32. Pre-lowers calls to ARM32 Helpers.

src/IceTargetLoweringARM32.h

Index: src/IceTargetLoweringARM32.h
diff --git a/src/IceTargetLoweringARM32.h b/src/IceTargetLoweringARM32.h
index e3bebde0ed998e32a5e31493e231890117834827..754f33cb7c5d9e6d3199c0d6a22dd50722c84651 100644
--- a/src/IceTargetLoweringARM32.h
+++ b/src/IceTargetLoweringARM32.h
@@ -237,7 +237,7 @@ protected:
   void lowerUnreachable(const InstUnreachable *Inst) override;
   void prelowerPhis() override;
   uint32_t getCallStackArgumentsSizeBytes(const InstCall *Instr) override;
-  void genTargetHelperCallFor(Inst *Instr) override { (void)Instr; }
+  void genTargetHelperCallFor(Inst *Instr) override;
   void doAddressOptLoad() override;
   void doAddressOptStore() override;
   void randomlyInsertNop(float Probability,
@@ -860,6 +860,8 @@ protected:
   static llvm::SmallBitVector TypeToRegisterSet[RCARM32_NUM];
   static llvm::SmallBitVector RegisterAliases[RegARM32::Reg_NUM];
   static llvm::SmallBitVector ScratchRegs;
+  /// Helper class that understands the Calling Convention and register
+  /// assignments. The first few integer type parameters can use r0-r3,

[Jim Stichnoth, 2015/11/24 22:24:00]

sentence ends in a comma - is there more that got stripped out?

[John, 2015/11/25 16:39:56]

No idea what happened here.

   llvm::SmallBitVector RegsUsed;
   VarList PhysicalRegisters[IceType_NUM];
 
@@ -917,6 +919,11 @@ private:
   OperandARM32Mem *formAddressingMode(Type Ty, Cfg *Func, const Inst *LdSt,
                                       Operand *Base);
 
+  void DoNothingHelper(const InstCall *) {}
+  void DivRem64Helper(const InstCall *Inst);
+  std::unordered_map<Operand *, void (TargetARM32::*)(const InstCall *Inst)>
+      ARM32Helpers;
+
   class BoolComputationTracker {
   public:
     BoolComputationTracker() = default;