MIPS: Avoid Unnecessary Smi Checks.

src/mips/lithium-codegen-mips.h

Index: src/mips/lithium-codegen-mips.h
diff --git a/src/mips/lithium-codegen-mips.h b/src/mips/lithium-codegen-mips.h
index 75a03be6cd0cccbbebb2b2b47afd26dc63c4e41c..3d31ef10baf64ab9aed3170e40e5e4508e2c09dc 100644
--- a/src/mips/lithium-codegen-mips.h
+++ b/src/mips/lithium-codegen-mips.h
@@ -365,7 +365,8 @@ class LCodeGen BASE_EMBEDDED {
   // true and false label should be made, to optimize fallthrough.
   Condition EmitIsString(Register input,
                          Register temp1,
-                         Label* is_not_string);
+                         Label* is_not_string,
+                         SmiCheck check_needed);
 
   // Emits optimized code for %_IsConstructCall().
   // Caller should branch on equal condition.