MIPS: Do not omit the write-barrier if the input value is a smi.

src/mips/stub-cache-mips.cc

Index: src/mips/stub-cache-mips.cc
diff --git a/src/mips/stub-cache-mips.cc b/src/mips/stub-cache-mips.cc
index c0924985a751dc8c7d2a66e1d2178d922839dd84..31e4e4479425409fb5155853fa552504044553f2 100644
--- a/src/mips/stub-cache-mips.cc
+++ b/src/mips/stub-cache-mips.cc
@@ -594,9 +594,6 @@ void StubCompiler::GenerateStoreTransition(MacroAssembler* masm,
     }
 
     if (!FLAG_track_fields || !representation.IsSmi()) {
-      // Skip updating write barrier if storing a smi.
-      __ JumpIfSmi(value_reg, &exit);
-
       // Update the write barrier for the array address.
       // Pass the now unused name_reg as a scratch register.
       if (!FLAG_track_double_fields || !representation.IsDouble()) {
@@ -626,9 +623,6 @@ void StubCompiler::GenerateStoreTransition(MacroAssembler* masm,
     }
 
     if (!FLAG_track_fields || !representation.IsSmi()) {
-      // Skip updating write barrier if storing a smi.
-      __ JumpIfSmi(value_reg, &exit);
-
       // Update the write barrier for the array address.
       // Ok to clobber receiver_reg and name_reg, since we return.
       if (!FLAG_track_double_fields || !representation.IsDouble()) {