ia32: Fix comparisons of two constant double operands when exactly one of them is in new space.

src/ia32/lithium-ia32.cc

 // Copyright 2012 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 1710 matching lines @@
     ASSERT(instr->right()->representation().Equals(r));
     LOperand* left = UseRegisterOrConstantAtStart(instr->left());
     LOperand* right = UseOrConstantAtStart(instr->right());
     return new(zone()) LCompareNumericAndBranch(left, right);
   } else {
     ASSERT(r.IsDouble());
     ASSERT(instr->left()->representation().IsDouble());
     ASSERT(instr->right()->representation().IsDouble());
     LOperand* left;
     LOperand* right;
-    if (instr->left()->IsConstant() && instr->right()->IsConstant()) {
-      left = UseRegisterOrConstantAtStart(instr->left());
-      right = UseRegisterOrConstantAtStart(instr->right());
+    if (CanBeImmediateConstant(instr->left()) &&
+        CanBeImmediateConstant(instr->right())) {
+      // The code generator requires either both inputs to be constant
+      // operands, or neither.
+      left = UseConstant(instr->left());
+      right = UseConstant(instr->right());
     } else {
       left = UseRegisterAtStart(instr->left());
       right = UseRegisterAtStart(instr->right());
     }
     return new(zone()) LCompareNumericAndBranch(left, right);
   }
 }
 
 
 LInstruction* LChunkBuilder::DoCompareObjectEqAndBranch(
@@ skipping 988 matching lines @@
 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) {
   LOperand* object = UseRegister(instr->object());
   LOperand* index = UseTempRegister(instr->index());
   return DefineSameAsFirst(new(zone()) LLoadFieldByIndex(object, index));
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32