From f8202f62ed65d15738e0868005c856168a302696 Mon Sep 17 00:00:00 2001
From: xleroy <xleroy@fca1b0fc-160b-0410-b1d3-a4f43f01ea2e>
Date: Wed, 6 Nov 2013 13:51:31 +0000
Subject: - Recognize __builtin_fabs as an operator, not just a builtin,  
 enabling more aggressive optimizations. - Less aggressive CSE for EF_builtin
 builtins, causes problems   for __builtin_write{16,32}_reversed.

git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2363 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
---
 cfrontend/C2C.ml | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'cfrontend/C2C.ml')

diff --git a/cfrontend/C2C.ml b/cfrontend/C2C.ml
index 285797d..8083535 100644
--- a/cfrontend/C2C.ml
+++ b/cfrontend/C2C.ml
@@ -576,6 +576,9 @@ let rec convertExpr env e =
  | C.ECall({edesc = C.EVar {name = "__builtin_memcpy_aligned"}}, args) ->
       make_builtin_memcpy (convertExprList env args)
 
+  | C.ECall({edesc = C.EVar {name = "__builtin_fabs"}}, [arg]) ->
+      Eunop(Oabsfloat, convertExpr env arg, ty)
+
   | C.ECall(fn, args) ->
       if not (supported_return_type env e.etyp) then
         unsupported ("function returning a result of type " ^ string_of_type e.etyp);
-- 
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