Remove unused pc descriptor types.

runtime/vm/stub_code_mips.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_MIPS)
 
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
@@ skipping 1869 matching lines @@
   __ CallRuntime(kBreakpointRuntimeHandlerRuntimeEntry, 0);
 
   __ lw(S5, Address(SP, 1 * kWordSize));
   __ lw(T0, Address(SP, 0 * kWordSize));
   __ addiu(SP, SP, Immediate(2 * kWordSize));
   __ LeaveStubFrame();
   __ jr(T0);
 }
 
 
-// S5: Contains Smi 0 (need to preserve a GC-safe value for the lazy compile
-// stub).
-// S4: Contains an arguments descriptor.
-void StubCode::GenerateClosureCallBreakpointStub(Assembler* assembler) {
-  __ Comment("ClosureCallBreakpoint stub");
-  __ EnterStubFrame();
-  __ addiu(SP, SP, Immediate(-3 * kWordSize));
-  __ sw(S5, Address(SP, 2 * kWordSize));
-  __ sw(S4, Address(SP, 1 * kWordSize));
-  __ LoadImmediate(TMP, reinterpret_cast<intptr_t>(Object::null()));
-  __ sw(TMP, Address(SP, 0 * kWordSize));
-
-  __ CallRuntime(kBreakpointRuntimeHandlerRuntimeEntry, 0);
-
-  __ lw(S5, Address(SP, 2 * kWordSize));
-  __ lw(S4, Address(SP, 1 * kWordSize));
-  __ lw(T0, Address(SP, 0 * kWordSize));
-  __ addiu(SP, SP, Immediate(3 * kWordSize));
-  __ LeaveStubFrame();
-  __ jr(T0);
-}
-
-
 void StubCode::GenerateRuntimeCallBreakpointStub(Assembler* assembler) {
   __ Comment("RuntimeCallBreakpoint stub");
   __ EnterStubFrame();
   __ addiu(SP, SP, Immediate(-1 * kWordSize));
   __ LoadImmediate(TMP, reinterpret_cast<intptr_t>(Object::null()));
   __ sw(TMP, Address(SP, 0 * kWordSize));
 
   __ CallRuntime(kBreakpointRuntimeHandlerRuntimeEntry, 0);
 
   __ lw(T0, Address(SP, 0 * kWordSize));
@@ skipping 394 matching lines @@
 // Result:
 //  T1: entry point.
 void StubCode::GenerateMegamorphicLookupStub(Assembler* assembler) {
   EmitMegamorphicLookup(assembler, T0, T1, T1);
   __ Ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS