X64 Crankshaft: Add ModI and ModT to x64 optimizing compiler.

src/x64/lithium-x64.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1300 matching lines @@
     LDivI* result = new LDivI(dividend, divisor, temp);
     return AssignEnvironment(DefineFixed(result, rax));
   } else {
     ASSERT(instr->representation().IsTagged());
     return DoArithmeticT(Token::DIV, instr);
   }
 }
 
 
 LInstruction* LChunkBuilder::DoMod(HMod* instr) {
-  Abort("Unimplemented: %s", "DoMod");
-  return NULL;
+  if (instr->representation().IsInteger32()) {
+    ASSERT(instr->left()->representation().IsInteger32());
+    ASSERT(instr->right()->representation().IsInteger32());
+    // The temporary operand is necessary to ensure that right is not allocated
+    // into edx.
+    LOperand* temp = FixedTemp(rdx);
+    LOperand* value = UseFixed(instr->left(), rax);
+    LOperand* divisor = UseRegister(instr->right());
+    LModI* mod = new LModI(value, divisor, temp);
+    LInstruction* result = DefineFixed(mod, rdx);
+    return (instr->CheckFlag(HValue::kBailoutOnMinusZero) ||
+            instr->CheckFlag(HValue::kCanBeDivByZero))
+        ? AssignEnvironment(result)
+        : result;
+  } else if (instr->representation().IsTagged()) {
+    return DoArithmeticT(Token::MOD, instr);
+  } else {
+    ASSERT(instr->representation().IsDouble());
+    // We call a C function for double modulo. It can't trigger a GC.
+    // We need to use fixed result register for the call.
+    // TODO(fschneider): Allow any register as input registers.
+    LOperand* left = UseFixedDouble(instr->left(), xmm1);
+    LOperand* right = UseFixedDouble(instr->right(), xmm2);
+    LArithmeticD* result = new LArithmeticD(Token::MOD, left, right);
+    return MarkAsCall(DefineFixedDouble(result, xmm1), instr);
+  }
 }
 
 
 LInstruction* LChunkBuilder::DoMul(HMul* instr) {
   if (instr->representation().IsInteger32()) {
     ASSERT(instr->left()->representation().IsInteger32());
     ASSERT(instr->right()->representation().IsInteger32());
     LOperand* left = UseRegisterAtStart(instr->LeastConstantOperand());
     LOperand* right = UseOrConstant(instr->MostConstantOperand());
     LMulI* mul = new LMulI(left, right);
@@ skipping 628 matching lines @@
 
 LInstruction* LChunkBuilder::DoLeaveInlined(HLeaveInlined* instr) {
   HEnvironment* outer = current_block_->last_environment()->outer();
   current_block_->UpdateEnvironment(outer);
   return NULL;
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64