Abcd for performance check.

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index bc1173b131550b03833f482610ee0a0932232a1a..a0b93f432c11afb0cfb1168d6c8cbb565ce168a0 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -4303,10 +4303,18 @@ void LCodeGen::DoBoundsCheck(LBoundsCheck* instr) {
     } else {
       __ cmp(ToOperand(instr->length()), Immediate(constant_index));
     }
-    DeoptimizeIf(below_equal, instr->environment());
+    if (instr->hydrogen()->allow_equality()) {
+      DeoptimizeIf(below, instr->environment());
+    } else {
+      DeoptimizeIf(below_equal, instr->environment());
+    }
   } else {
     __ cmp(ToRegister(instr->index()), ToOperand(instr->length()));
-    DeoptimizeIf(above_equal, instr->environment());
+    if (instr->hydrogen()->allow_equality()) {
+      DeoptimizeIf(above, instr->environment());
+    } else {
+      DeoptimizeIf(above_equal, instr->environment());
+    }
   }
 }