Merged r11459, r11523 into 3.9 branch.

src/mips/code-stubs-mips.cc

Index: src/mips/code-stubs-mips.cc
diff --git a/src/mips/code-stubs-mips.cc b/src/mips/code-stubs-mips.cc
index 3e7b5bf63bd37b172a76269bf8e29d73c0b1db09..5719d2cca39cc63066cfa827b916624dd8c2ae49 100644
--- a/src/mips/code-stubs-mips.cc
+++ b/src/mips/code-stubs-mips.cc
@@ -2754,7 +2754,6 @@ void BinaryOpStub::GenerateSmiCode(
   Register left = a1;
   Register right = a0;
   Register scratch1 = t3;
-  Register scratch2 = t5;
 
   // Perform combined smi check on both operands.
   __ Or(scratch1, left, Operand(right));
@@ -3459,7 +3458,6 @@ void TranscendentalCacheStub::Generate(MacroAssembler* masm) {
 
     Label no_update;
     Label skip_cache;
-    const Register heap_number_map = t2;
 
     // Call C function to calculate the result and update the cache.
     // Register a0 holds precalculated cache entry address; preserve