[ic] [stubs] Don't use Code::flags in megamorphic stub cache hash computations.

src/mips64/macro-assembler-mips64.cc

Index: src/mips64/macro-assembler-mips64.cc
diff --git a/src/mips64/macro-assembler-mips64.cc b/src/mips64/macro-assembler-mips64.cc
index 93b436bb4797874218caa701b5d3f4e0b70ea6fd..84e65d56a392c5a551bb2ddba37ac3f8c7eddf87 100644
--- a/src/mips64/macro-assembler-mips64.cc
+++ b/src/mips64/macro-assembler-mips64.cc
@@ -6014,9 +6014,9 @@ void MacroAssembler::IncrementCounter(StatsCounter* counter, int value,
   DCHECK(value > 0);
   if (FLAG_native_code_counters && counter->Enabled()) {
     li(scratch2, Operand(ExternalReference(counter)));
-    ld(scratch1, MemOperand(scratch2));
-    Daddu(scratch1, scratch1, Operand(value));
-    sd(scratch1, MemOperand(scratch2));
+    lw(scratch1, MemOperand(scratch2));
+    Addu(scratch1, scratch1, Operand(value));
+    sw(scratch1, MemOperand(scratch2));
   }
 }