1 files changed, 83 insertions, 0 deletions
diff --git a/gcc/gimple-predict.h b/gcc/gimple-predict.h
new file mode 100644
index 00000000000..9f009a55366
--- /dev/null
+++ b/gcc/gimple-predict.h
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+/* Gimple prediction routines.
+
+   Copyright (C) 2007-2015 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_GIMPLE_PREDICT_H
+#define GCC_GIMPLE_PREDICT_H
+
+#include "predict.h"
+
+/* Return the predictor of GIMPLE_PREDICT statement GS.  */
+
+static inline enum br_predictor
+gimple_predict_predictor (gimple gs)
+{
+  GIMPLE_CHECK (gs, GIMPLE_PREDICT);
+  return (enum br_predictor) (gs->subcode & ~GF_PREDICT_TAKEN);
+}
+
+
+/* Set the predictor of GIMPLE_PREDICT statement GS to PREDICT.  */
+
+static inline void
+gimple_predict_set_predictor (gimple gs, enum br_predictor predictor)
+{
+  GIMPLE_CHECK (gs, GIMPLE_PREDICT);
+  gs->subcode = (gs->subcode & GF_PREDICT_TAKEN)
+		       | (unsigned) predictor;
+}
+
+
+/* Return the outcome of GIMPLE_PREDICT statement GS.  */
+
+static inline enum prediction
+gimple_predict_outcome (gimple gs)
+{
+  GIMPLE_CHECK (gs, GIMPLE_PREDICT);
+  return (gs->subcode & GF_PREDICT_TAKEN) ? TAKEN : NOT_TAKEN;
+}
+
+
+/* Set the outcome of GIMPLE_PREDICT statement GS to OUTCOME.  */
+
+static inline void
+gimple_predict_set_outcome (gimple gs, enum prediction outcome)
+{
+  GIMPLE_CHECK (gs, GIMPLE_PREDICT);
+  if (outcome == TAKEN)
+    gs->subcode |= GF_PREDICT_TAKEN;
+  else
+    gs->subcode &= ~GF_PREDICT_TAKEN;
+}
+
+/* Build a GIMPLE_PREDICT statement.  PREDICT is one of the predictors from
+   predict.def, OUTCOME is NOT_TAKEN or TAKEN.  */
+
+inline gimple
+gimple_build_predict (enum br_predictor predictor, enum prediction outcome)
+{
+  gimple p = gimple_alloc (GIMPLE_PREDICT, 0);
+  /* Ensure all the predictors fit into the lower bits of the subcode.  */
+  gcc_assert ((int) END_PREDICTORS <= GF_PREDICT_TAKEN);
+  gimple_predict_set_predictor (p, predictor);
+  gimple_predict_set_outcome (p, outcome);
+  return p;
+}
+
+#endif  /* GCC_GIMPLE_PREDICT_H */