Unify SMI case inlining for ToNumberStub.

src/mips/full-codegen-mips.cc

Index: src/mips/full-codegen-mips.cc
diff --git a/src/mips/full-codegen-mips.cc b/src/mips/full-codegen-mips.cc
index 51b71a671cf0b30fe07160dccfab40f55dd623ae..9c610c32f9db33f2edef307247f196d0ca76fc04 100644
--- a/src/mips/full-codegen-mips.cc
+++ b/src/mips/full-codegen-mips.cc
@@ -4470,7 +4470,9 @@ void FullCodeGenerator::VisitCountOperation(CountOperation* expr) {
 
   // Call ToNumber only if operand is not a smi.
   Label no_conversion;
-  __ JumpIfSmi(v0, &no_conversion);
+  if (ShouldInlineSmiCase(expr->op())) {
+    __ JumpIfSmi(v0, &no_conversion);
+  }
   __ mov(a0, v0);
   ToNumberStub convert_stub;
   __ CallStub(&convert_stub);