[Turbofan] Add concept of FP register aliasing on ARM 32.

test/unittests/unittests.gyp

 # Copyright 2014 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # The sources are kept automatically in sync with BUILD.gn.
 
 {
   'variables': {
     'v8_code': 1,
     'unittests_sources': [  ### gcmole(all) ###
@@ skipping 24 matching lines @@
       'compiler/control-flow-optimizer-unittest.cc',
       'compiler/dead-code-elimination-unittest.cc',
       'compiler/diamond-unittest.cc',
       'compiler/effect-control-linearizer-unittest.cc',
       'compiler/escape-analysis-unittest.cc',
       'compiler/graph-reducer-unittest.cc',
       'compiler/graph-reducer-unittest.h',
       'compiler/graph-trimmer-unittest.cc',
       'compiler/graph-unittest.cc',
       'compiler/graph-unittest.h',
+      'compiler/instruction-unittest.cc',
       'compiler/instruction-selector-unittest.cc',
       'compiler/instruction-selector-unittest.h',
       'compiler/instruction-sequence-unittest.cc',
       'compiler/instruction-sequence-unittest.h',
       'compiler/int64-lowering-unittest.cc',
       'compiler/js-builtin-reducer-unittest.cc',
       'compiler/js-create-lowering-unittest.cc',
       'compiler/js-intrinsic-lowering-unittest.cc',
       'compiler/js-operator-unittest.cc',
       'compiler/js-typed-lowering-unittest.cc',
@@ skipping 206 matching lines @@
             '../../gypfiles/isolate.gypi',
           ],
           'sources': [
             'unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }