From d719ddb69b9bc56b46f28689a7dc4d31f980f702 Mon Sep 17 00:00:00 2001
From: Erick Ochoa <erick.ochoa@theobroma-systems.com>
Date: Tue, 10 Mar 2020 13:23:55 +0100
Subject: Initial commit of new pass

---
 gcc/ipa-hello-world.c | 80 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 gcc/ipa-hello-world.c

diff --git a/gcc/ipa-hello-world.c b/gcc/ipa-hello-world.c
new file mode 100644
index 00000000000..9040a9360a6
--- /dev/null
+++ b/gcc/ipa-hello-world.c
@@ -0,0 +1,80 @@
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "backend.h"
+#include "tree.h"
+#include "gimple-expr.h"
+#include "predict.h"
+#include "alloc-pool.h"
+#include "tree-pass.h"
+#include "cgraph.h"
+#include "diagnostic.h"
+#include "fold-const.h"
+#include "gimple-fold.h"
+#include "symbol-summary.h"
+#include "tree-vrp.h"
+#include "ipa-prop.h"
+#include "tree-pretty-print.h"
+#include "tree-inline.h"
+#include "ipa-fnsummary.h"
+#include "ipa-utils.h"
+#include "tree-ssa-ccp.h"
+#include "stringpool.h"
+#include "attribs.h"
+
+
+static unsigned int
+iphw_execute()
+{
+  cgraph_node *node;
+  FOR_EACH_FUNCTION(node)
+  {
+     if (dump_file) fprintf(dump_file, "the name of the function is %s\n", node->dump_asm_name());
+
+     if (strcmp(node->dump_asm_name(), "bar/49") != 0) continue;
+
+     node->get_untransformed_body();
+     fprintf(dump_file, "we are where we need to be\n");
+     cgraph_node *clone = node->create_version_clone_with_body(
+        node->collect_callers(),
+        NULL,
+        NULL,
+        NULL,
+        NULL,
+        "helloworld",
+        NULL);
+  }
+  return 0;
+}
+
+namespace {
+const pass_data pass_data_ipa_hello_world =
+{
+  SIMPLE_IPA_PASS,
+  "hello_world",
+  OPTGROUP_NONE,
+  TV_NONE,
+  (PROP_cfg | PROP_ssa),
+  0,
+  0,
+  0,
+  0,
+};
+
+class pass_ipa_hello_world : public simple_ipa_opt_pass
+{
+public:
+  pass_ipa_hello_world (gcc::context *ctx)
+    : simple_ipa_opt_pass(pass_data_ipa_hello_world, ctx)
+  {}
+
+  virtual bool gate(function*) { return flag_ipa_hello_world; }
+  virtual unsigned execute (function*) { return iphw_execute(); }
+};
+} // anon namespace
+
+simple_ipa_opt_pass*
+make_pass_ipa_hello_world (gcc::context *ctx)
+{
+  return new pass_ipa_hello_world (ctx);
+}
-- 
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