Revert trunk to bleeding_edge at r12484

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 ee3127aafd71e0fe8dff6607aa8d8a12384474c6..a5c80b8471c9f34dbc19916e2e3ba631876db076 100644
--- a/src/mips/code-stubs-mips.cc
+++ b/src/mips/code-stubs-mips.cc
@@ -5405,12 +5405,12 @@ void RegExpConstructResultStub::Generate(MacroAssembler* masm) {
   // Set FixedArray length.
   __ sll(t2, t1, kSmiTagSize);
   __ sw(t2, FieldMemOperand(a3, FixedArray::kLengthOffset));
-  // Fill contents of fixed-array with undefined.
-  __ LoadRoot(a2, Heap::kUndefinedValueRootIndex);
+  // Fill contents of fixed-array with the-hole.
+  __ li(a2, Operand(masm->isolate()->factory()->the_hole_value()));
   __ Addu(a3, a3, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
-  // Fill fixed array elements with undefined.
+  // Fill fixed array elements with hole.
   // v0: JSArray, tagged.
-  // a2: undefined.
+  // a2: the hole.
   // a3: Start of elements in FixedArray.
   // t1: Number of elements to fill.
   Label loop;
@@ -7512,11 +7512,6 @@ void RecordWriteStub::GenerateFixedRegStubsAheadOfTime() {
 }
 
 
-bool CodeStub::CanUseFPRegisters() {
-  return CpuFeatures::IsSupported(FPU);
-}
-
-
 // Takes the input in 3 registers: address_ value_ and object_.  A pointer to
 // the value has just been written into the object, now this stub makes sure
 // we keep the GC informed.  The word in the object where the value has been