gcc/go/gofrontend/go-optimize.cc

   1 // go-optimize.cc -- Go frontend optimizer flags.
   2
   3 // Copyright 2011 The Go Authors. All rights reserved.
   4 // Use of this source code is governed by a BSD-style
   5 // license that can be found in the LICENSE file.
   6
   7 #include "go-system.h"
   8
   9 #include "go-c.h"
  10 #include "go-optimize.h"
  11
  12 namespace {
  13
  14 // The list of optimizations.
  15
  16 Go_optimize* optimizations;
  17
  18 } // End empty namespace.
  19
  20 // Create a new optimization.
  21
  22 Go_optimize::Go_optimize(const char* name)
  23   : next_(optimizations), name_(name), is_enabled_(false)
  24 {
  25   optimizations = this;
  26 }
  27
  28 // Enable an optimization by name.
  29
  30 bool
  31 Go_optimize::enable_by_name(const char* name)
  32 {
  33   bool is_all = strcmp(name, "all") == 0;
  34   bool found = false;
  35   for (Go_optimize* p = optimizations; p != NULL; p = p->next_)
  36     {
  37       if (is_all || strcmp(name, p->name_) == 0)
  38         {
  39           p->is_enabled_ = true;
  40           found = true;
  41         }
  42     }
  43   return found;
  44 }
  45
  46 // Enable an optimization.  Return 1 if this is a real name, 0 if not.
  47
  48 GO_EXTERN_C
  49 int
  50 go_enable_optimize(const char* name)
  51 {
  52   return Go_optimize::enable_by_name(name) ? 1 : 0;
  53 }