MIPS64: Add big-endian support for mips64.

src/ic/mips64/handler-compiler-mips64.cc

Index: src/ic/mips64/handler-compiler-mips64.cc
diff --git a/src/ic/mips64/handler-compiler-mips64.cc b/src/ic/mips64/handler-compiler-mips64.cc
index e905506756fd0f4835559b9b53d6f0b92f03d6a4..9c3a5b3e70b9a6b24aabda099fb8eff640e1b7fd 100644
--- a/src/ic/mips64/handler-compiler-mips64.cc
+++ b/src/ic/mips64/handler-compiler-mips64.cc
@@ -361,7 +361,7 @@ void NamedStoreHandlerCompiler::GenerateRestoreMap(Handle<Map> transition,
   DCHECK(!map_reg.is(scratch));
   __ LoadWeakValue(map_reg, cell, miss);
   if (transition->CanBeDeprecated()) {
-    __ ld(scratch, FieldMemOperand(map_reg, Map::kBitField3Offset));
+    __ lwu(scratch, FieldMemOperand(map_reg, Map::kBitField3Offset));
     __ And(at, scratch, Operand(Map::Deprecated::kMask));
     __ Branch(miss, ne, at, Operand(zero_reg));
   }