A64: Implement LModI for ARM A64.

src/a64/lithium-a64.cc

 // Copyright 2013 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 1743 matching lines @@
     ASSERT(instr->representation().IsDouble());
     ASSERT(instr->left()->representation().IsDouble());
     ASSERT(instr->right()->representation().IsDouble());
     left = UseRegisterAtStart(instr->left());
     right = UseRegisterAtStart(instr->right());
   }
   return DefineAsRegister(new(zone()) LMathMinMax(left, right));
 }
 
 
-LInstruction* LChunkBuilder::DoMod(HMod* instr) {
-  if (instr->representation().IsInteger32()) {
-    ASSERT(instr->left()->representation().IsInteger32());
-    ASSERT(instr->right()->representation().IsInteger32());
+LInstruction* LChunkBuilder::DoMod(HMod* hmod) {
+  HValue* hleft = hmod->left();
+  HValue* hright = hmod->right();
 
-    UNIMPLEMENTED_INSTRUCTION();
-  } else if (instr->representation().IsSmiOrTagged()) {
-    UNIMPLEMENTED_INSTRUCTION();
+  if (hmod->representation().IsInteger32()) {
+    ASSERT(hleft->representation().IsInteger32());
+    ASSERT(hleft->representation().IsInteger32());
+    LOperand* left_op;
+    LOperand* right_op;
+
+    if (hmod->HasPowerOf2Divisor()) {
+      left_op = UseRegisterAtStart(hleft);
+      right_op = UseConstant(hright);
+    } else {
+      right_op = UseRegister(hright);
+      left_op = UseRegister(hleft);
+    }
+
+    LModI* lmod = new(zone()) LModI(left_op, right_op);
+
+    if (hmod->right()->CanBeZero() ||
+        (hmod->CheckFlag(HValue::kBailoutOnMinusZero) &&
+         hmod->left()->CanBeNegative() && hmod->CanBeZero())) {
+      AssignEnvironment(lmod);
+    }
+    return DefineAsRegister(lmod);
+
+  } else if (hmod->representation().IsSmiOrTagged()) {
+    return DoArithmeticT(Token::MOD, hmod);
   } else {
-    return DoArithmeticD(Token::MOD, instr);
+    return DoArithmeticD(Token::MOD, hmod);
   }
 }
 
 
 LInstruction* LChunkBuilder::DoMul(HMul* instr) {
   if (instr->representation().IsInteger32()) {
     ASSERT(instr->left()->representation().IsInteger32());
     ASSERT(instr->right()->representation().IsInteger32());
 
     bool can_overflow = instr->CheckFlag(HValue::kCanOverflow);
@@ skipping 674 matching lines @@
 LInstruction* LChunkBuilder::DoWrapReceiver(HWrapReceiver* instr) {
   LOperand* receiver = UseRegister(instr->receiver());
   LOperand* function = UseRegisterAtStart(instr->function());
   LOperand* temp = TempRegister();
   LWrapReceiver* result = new(zone()) LWrapReceiver(receiver, function, temp);
   return AssignEnvironment(DefineAsRegister(result));
 }
 
 
 } }  // namespace v8::internal