From 320c55590cc30d4ef5b2c1a226f0f940a6bdb445 Mon Sep 17 00:00:00 2001
From: Xavier Leroy <xavier.leroy@college-de-france.fr>
Date: Sun, 25 Apr 2021 13:57:47 +0200
Subject: Support __builtin_unreachable

Not yet used for optimizations.
---
 powerpc/Asmexpand.ml | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'powerpc')

diff --git a/powerpc/Asmexpand.ml b/powerpc/Asmexpand.ml
index 4cb72c10..e663226f 100644
--- a/powerpc/Asmexpand.ml
+++ b/powerpc/Asmexpand.ml
@@ -793,6 +793,9 @@ let expand_builtin_inline name args res =
   (* no operation *)
   | "__builtin_nop", [], _ ->
       emit (Pori (GPR0, GPR0, Cint _0))
+  (* Optimization hint *)
+  | "__builtin_unreachable", [], _ ->
+     ()
   (* atomic operations *)
   | "__builtin_atomic_exchange", [BA (IR a1); BA (IR a2); BA (IR a3)],_ ->
       (* Register constraints imposed by Machregs.v *)
-- 
cgit