[x64] Introduce BMI instructions.

src/compiler/x64/code-generator-x64.cc

 // Copyright 2013 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.
 
 #include "src/compiler/code-generator.h"
 
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/scopes.h"
@@ skipping 688 matching lines @@
       ASSEMBLE_SHIFT(sarq, 6);
       break;
     case kX64Ror32:
       ASSEMBLE_SHIFT(rorl, 5);
       break;
     case kX64Ror:
       ASSEMBLE_SHIFT(rorq, 6);
       break;
     case kX64Lzcnt32:
       if (instr->InputAt(0)->IsRegister()) {
-        __ Lzcntl(i.OutputRegister(), i.InputRegister(0));
+        __ lzcntl(i.OutputRegister(), i.InputRegister(0));

[Benedikt Meurer, 2015/04/08 05:45:41]

Keep the macro assembler version here, because we also need to support machines
without lzcntl.

       } else {
-        __ Lzcntl(i.OutputRegister(), i.InputOperand(0));
+        __ lzcntl(i.OutputRegister(), i.InputOperand(0));

[Benedikt Meurer, 2015/04/08 05:45:41]

Same here.

       }
       break;
     case kSSEFloat32Cmp:
       ASSEMBLE_SSE_BINOP(ucomiss);
       break;
     case kSSEFloat32Add:
       ASSEMBLE_SSE_BINOP(addss);
       break;
     case kSSEFloat32Sub:
       ASSEMBLE_SSE_BINOP(subss);
@@ skipping 838 matching lines @@
     }
   }
   MarkLazyDeoptSite();
 }
 
 #undef __
 
 }  // namespace internal
 }  // namespace compiler
 }  // namespace v8