gimple-print.c

#include "gcc-plugin.h"

int plugin_is_GLP_complatinle = 1;

static struct plugin_info gimple_print_info = 
{
  .version = "1",
  .help = "Display the GIMPLE/IR in a readable manner",
};

static sturct plugin_gcc_version gimple_print_ver = 
{
  .basever = "8.0.1",
  .datestamp = "20180316",
  .devphase = "experimental",
  .revision = "",
};

static struct gimple_opt_pass gimple_print_pass =
{
  .pass.type = GIMPLE_PASS,
  .pass.name = "gimple-print",
  
  /*
   * This pass and all sub-passes are executed only if the function returns
   * true.  The default implementation returns true.
   */
  .pass.gate = gimple_print_gate,
  
  /*
   * This is the code to run.  If this is not overridden, then there should
   * be sub-passes otherwise this pass does nothing.
   * The return value contains TODOs to execute in addition to those in
   * TODO_flags_finish.
   */
  .pass.execute = gimple_print_exec,
};

/* Return 0 on success or error code on failure */
int plugin_init(struct plugin_name_args   *info,    // Argument information */
                struct plugin_gcc_version *ver)     // Version info of GCC
{
 /* 
  * Used to tell the plugin-framework about where we want to be called in the
  * set of all passes.  This is located in tree-pass.h
  */
  struct register_pass_info pass;
  printf("GIMPLE-PRINT plugin initialized...\n");

  /* Check that the GCC version is in line with the plugin requirements */
  plugin_default_version_check();

  /*
  * Setup the info to register with GCC telling when we want to be called and
  * to what GCC should call, when it's time to be called.
  */
  pass.pass = &gimple_print_pass.pass;

  /*
  * Get called after GCC has produced the SSA representation of the program.
  * After the first SSA pass.
  */
  pass.reference_pass_name = "ssa";
  pass.ref_pass_instance_number = 1;
  pass.pos_op = PASS_POS_INSERT_AFTER;

  /* Tell GCC we want to be called after the first SSA pass */
  register_callback("gimple-print", PLUGIN_PASS_MANAGER_SETUP, NULL, &pass);

  /* Tell GCC some info about the plugin (used when --version or --help are called) */
  register_callback("gimple-print", PLUGIN_INFO, NULL, &gimple_print_info);

  /* Success */
  return 0;
}