Remove strong mode support from binary operations.

src/ia32/code-stubs-ia32.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 1218 matching lines @@
   Label generic_heap_number_comparison;
   {
     Label not_identical;
     __ cmp(eax, edx);
     __ j(not_equal, &not_identical);
 
     if (cc != equal) {
       // Check for undefined.  undefined OP undefined is false even though
       // undefined == undefined.
       __ cmp(edx, isolate()->factory()->undefined_value());
-      if (is_strong(strength())) {
-        // In strong mode, this comparison must throw, so call the runtime.
-        __ j(equal, &runtime_call, Label::kFar);
-      } else {
-        Label check_for_nan;
-        __ j(not_equal, &check_for_nan, Label::kNear);
-        __ Move(eax, Immediate(Smi::FromInt(NegativeComparisonResult(cc))));
-        __ ret(0);
-        __ bind(&check_for_nan);
-      }
+      Label check_for_nan;
+      __ j(not_equal, &check_for_nan, Label::kNear);
+      __ Move(eax, Immediate(Smi::FromInt(NegativeComparisonResult(cc))));
+      __ ret(0);
+      __ bind(&check_for_nan);
     }
 
     // Test for NaN. Compare heap numbers in a general way,
     // to handle NaNs correctly.
     __ cmp(FieldOperand(edx, HeapObject::kMapOffset),
            Immediate(isolate()->factory()->heap_number_map()));
     __ j(equal, &generic_heap_number_comparison, Label::kNear);
     if (cc != equal) {
       __ mov(ecx, FieldOperand(eax, HeapObject::kMapOffset));
       __ movzx_b(ecx, FieldOperand(ecx, Map::kInstanceTypeOffset));
       // Call runtime on identical JSObjects.  Otherwise return equal.
       __ cmpb(ecx, static_cast<uint8_t>(FIRST_JS_RECEIVER_TYPE));
       __ j(above_equal, &runtime_call, Label::kFar);
       // Call runtime on identical symbols since we need to throw a TypeError.
       __ cmpb(ecx, static_cast<uint8_t>(SYMBOL_TYPE));
       __ j(equal, &runtime_call, Label::kFar);
       // Call runtime on identical SIMD values since we must throw a TypeError.
       __ cmpb(ecx, static_cast<uint8_t>(SIMD128_VALUE_TYPE));
       __ j(equal, &runtime_call, Label::kFar);
-      if (is_strong(strength())) {
-        // We have already tested for smis and heap numbers, so if both
-        // arguments are not strings we must proceed to the slow case.
-        __ test(ecx, Immediate(kIsNotStringMask));
-        __ j(not_zero, &runtime_call, Label::kFar);
-      }
     }
     __ Move(eax, Immediate(Smi::FromInt(EQUAL)));
     __ ret(0);
 
 
     __ bind(&not_identical);
   }
 
   // Strict equality can quickly decide whether objects are equal.
   // Non-strict object equality is slower, so it is handled later in the stub.
@@ skipping 179 matching lines @@
     __ push(ecx);
     __ TailCallRuntime(strict() ? Runtime::kStrictEquals : Runtime::kEquals);
   } else {
     __ push(Immediate(Smi::FromInt(NegativeComparisonResult(cc))));
 
     // Restore return address on the stack.
     __ push(ecx);
 
     // Call the native; it returns -1 (less), 0 (equal), or 1 (greater)
     // tagged as a small integer.
-    __ TailCallRuntime(is_strong(strength()) ? Runtime::kCompare_Strong
-                                             : Runtime::kCompare);
+    __ TailCallRuntime(Runtime::kCompare);
   }
 
   __ bind(&miss);
   GenerateMiss(masm);
 }
 
 
 static void CallStubInRecordCallTarget(MacroAssembler* masm, CodeStub* stub) {
   // eax : number of arguments to the construct function
   // ebx : feedback vector
@@ skipping 1459 matching lines @@
   Label miss;
   Label::Distance const miss_distance =
       masm->emit_debug_code() ? Label::kFar : Label::kNear;
 
   __ JumpIfSmi(edx, &miss, miss_distance);
   __ mov(ecx, FieldOperand(edx, HeapObject::kMapOffset));
   __ JumpIfSmi(eax, &miss, miss_distance);
   __ mov(ebx, FieldOperand(eax, HeapObject::kMapOffset));
   __ JumpIfNotRoot(ecx, Heap::kBooleanMapRootIndex, &miss, miss_distance);
   __ JumpIfNotRoot(ebx, Heap::kBooleanMapRootIndex, &miss, miss_distance);
-  if (op() != Token::EQ_STRICT && is_strong(strength())) {
-    __ TailCallRuntime(Runtime::kThrowStrongModeImplicitConversion);
-  } else {
-    if (!Token::IsEqualityOp(op())) {
-      __ mov(eax, FieldOperand(eax, Oddball::kToNumberOffset));
-      __ AssertSmi(eax);
-      __ mov(edx, FieldOperand(edx, Oddball::kToNumberOffset));
-      __ AssertSmi(edx);
-      __ push(eax);
-      __ mov(eax, edx);
-      __ pop(edx);
-    }
-    __ sub(eax, edx);
-    __ Ret();
+  if (!Token::IsEqualityOp(op())) {
+    __ mov(eax, FieldOperand(eax, Oddball::kToNumberOffset));
+    __ AssertSmi(eax);
+    __ mov(edx, FieldOperand(edx, Oddball::kToNumberOffset));
+    __ AssertSmi(edx);
+    __ push(eax);
+    __ mov(eax, edx);
+    __ pop(edx);
   }
+  __ sub(eax, edx);
+  __ Ret();
 
   __ bind(&miss);
   GenerateMiss(masm);
 }
 
 
 void CompareICStub::GenerateSmis(MacroAssembler* masm) {
   DCHECK(state() == CompareICState::SMI);
   Label miss;
   __ mov(ecx, edx);
@@ skipping 69 matching lines @@
   // Performing mov, because xor would destroy the flag register.
   __ mov(eax, 0);  // equal
   __ mov(ecx, Immediate(Smi::FromInt(1)));
   __ cmov(above, eax, ecx);
   __ mov(ecx, Immediate(Smi::FromInt(-1)));
   __ cmov(below, eax, ecx);
   __ ret(0);
 
   __ bind(&unordered);
   __ bind(&generic_stub);
-  CompareICStub stub(isolate(), op(), strength(), CompareICState::GENERIC,
+  CompareICStub stub(isolate(), op(), CompareICState::GENERIC,
                      CompareICState::GENERIC, CompareICState::GENERIC);
   __ jmp(stub.GetCode(), RelocInfo::CODE_TARGET);
 
   __ bind(&maybe_undefined1);
   if (Token::IsOrderedRelationalCompareOp(op())) {
     __ cmp(eax, Immediate(isolate()->factory()->undefined_value()));
     __ j(not_equal, &miss);
     __ JumpIfSmi(edx, &unordered);
     __ CmpObjectType(edx, HEAP_NUMBER_TYPE, ecx);
     __ j(not_equal, &maybe_undefined2, Label::kNear);
@@ skipping 222 matching lines @@
 
   __ GetWeakValue(edi, cell);
   __ cmp(edi, FieldOperand(eax, HeapObject::kMapOffset));
   __ j(not_equal, &miss, Label::kNear);
   __ cmp(edi, FieldOperand(edx, HeapObject::kMapOffset));
   __ j(not_equal, &miss, Label::kNear);
 
   if (Token::IsEqualityOp(op())) {
     __ sub(eax, edx);
     __ ret(0);
-  } else if (is_strong(strength())) {
-    __ TailCallRuntime(Runtime::kThrowStrongModeImplicitConversion);
   } else {
     __ PopReturnAddressTo(ecx);
     __ Push(edx);
     __ Push(eax);
     __ Push(Immediate(Smi::FromInt(NegativeComparisonResult(GetCondition()))));
     __ PushReturnAddressFrom(ecx);
     __ TailCallRuntime(Runtime::kCompare);
   }
 
   __ bind(&miss);
@@ skipping 2487 matching lines @@
                            return_value_operand, NULL);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32