From 5a632954c85e8b2b5afea124e4fc83f39c5d3598 Mon Sep 17 00:00:00 2001
From: Cyril SIX <cyril.six@kalray.eu>
Date: Tue, 1 Jun 2021 14:37:07 +0200
Subject: [BROKEN] Merge with v3.9 : something broken for __builtin_expect in
 cfrontend/C2C.ml

---
 riscV/Asmexpand.ml | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'riscV/Asmexpand.ml')

diff --git a/riscV/Asmexpand.ml b/riscV/Asmexpand.ml
index a49efce8..50dc20be 100644
--- a/riscV/Asmexpand.ml
+++ b/riscV/Asmexpand.ml
@@ -646,8 +646,12 @@ let expand_builtin_inline name args res =
                         (fun rl ->
                           emit (Pmulw (rl, X a, X b));
                           emit (Pmulhuw (rh, X a, X b)))
+  (* No operation *)
   | "__builtin_nop", [], _ ->
      emit Pnop
+  (* Optimization hint *)
+  | "__builtin_unreachable", [], _ ->
+     ()
   (* Catch-all *)
   | _ ->
      raise (Error ("unrecognized builtin " ^ name))
-- 
cgit