text: // go-optimize.cc -- Go frontend optimizer flags.
  
  // Copyright 2011 The Go 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 "go-system.h"
  
  #include "go-c.h"
  #include "go-optimize.h"
  
  namespace {
  
  // The list of optimizations.
  
  Go_optimize* optimizations;
  
  } // End empty namespace.
  
  // Create a new optimization.
  
  Go_optimize::Go_optimize(const char* name, bool enabled)
    : next_(optimizations), name_(name), is_enabled_(enabled)
  {
    optimizations = this;
  }
  
  // Enable an optimization by name.
  
  bool
  Go_optimize::enable_by_name(const char* name, bool value)
  {
    bool is_all = strcmp(name, "all") == 0;
    bool found = false;
    for (Go_optimize* p = optimizations; p != NULL; p = p->next_)
      {
        if (is_all || strcmp(name, p->name_) == 0)
  	{
  	  p->is_enabled_ = value;
  	  found = true;
  	}
      }
    return found;
  }
  
  // Enable/disable an optimization.  Return 1 if this is a real name, 0 if not.
  
  GO_EXTERN_C
  int
  go_enable_optimize(const char* name, int value)
  {
    return Go_optimize::enable_by_name(name, (bool)value) ? 1 : 0;
  }
  