Remove MIPS support

runtime/vm/precompiler.cc

 // Copyright (c) 2015, 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/precompiler.h"
 
 #include "vm/aot_optimizer.h"
 #include "vm/assembler.h"
 #include "vm/ast_printer.h"
 #include "vm/branch_optimizer.h"
@@ skipping 2780 matching lines @@
   }
   bool is_compiled = false;
   Zone* const zone = thread()->zone();
 #ifndef PRODUCT
   TimelineStream* compiler_timeline = Timeline::GetCompilerStream();
 #endif  // !PRODUCT
   CSTAT_TIMER_SCOPE(thread(), codegen_timer);
   HANDLESCOPE(thread());
 
   // We may reattempt compilation if the function needs to be assembled using
-  // far branches on ARM and MIPS. In the else branch of the setjmp call,
-  // done is set to false, and use_far_branches is set to true if there is a
-  // longjmp from the ARM or MIPS assemblers. In all other paths through this
-  // while loop, done is set to true. use_far_branches is always false on ia32
-  // and x64.
+  // far branches on ARM. In the else branch of the setjmp call, done is set to
+  // false, and use_far_branches is set to true if there is a longjmp from the
+  // ARM assembler. In all other paths through this while loop, done is set to
+  // true. use_far_branches is always false on ia32 and x64.
   bool done = false;
   // volatile because the variable may be clobbered by a longjmp.
   volatile bool use_far_branches = false;
   volatile bool use_speculative_inlining =
       FLAG_max_speculative_inlining_attempts > 0;
   GrowableArray<intptr_t> inlining_black_list;
 
   while (!done) {
     const intptr_t prev_deopt_id = thread()->deopt_id();
     thread()->set_deopt_id(0);
@@ skipping 573 matching lines @@
 
   ASSERT(FLAG_precompiled_mode);
   const bool optimized = function.IsOptimizable();  // False for natives.
   DartPrecompilationPipeline pipeline(zone, field_type_map);
   return PrecompileFunctionHelper(precompiler, &pipeline, function, optimized);
 }
 
 #endif  // DART_PRECOMPILER
 
 }  // namespace dart