From d5e16ade14822f1a125b6d568b1e3e1326e8868d Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@twiddle.net>
Date: Thu, 3 Jul 2014 08:56:55 -0700
Subject: alpha: Implement math_opt_barrier and math_force_eval

---
 sysdeps/alpha/fpu/math_private.h | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'sysdeps')

diff --git a/sysdeps/alpha/fpu/math_private.h b/sysdeps/alpha/fpu/math_private.h
index 22ab3b9ab0..9e06e25dc6 100644
--- a/sysdeps/alpha/fpu/math_private.h
+++ b/sysdeps/alpha/fpu/math_private.h
@@ -13,6 +13,12 @@
 # define __isnanf __isnanf
 #endif
 
+/* Generic code forces values to memory; we don't need to do that.  */
+#define math_opt_barrier(x) \
+  ({ __typeof (x) __x = (x); __asm ("" : "+frm" (__x)); __x; })
+#define math_force_eval(x) \
+  ({ __typeof (x) __x = (x); __asm __volatile__ ("" : : "frm" (__x)); })
+
 #include_next <math_private.h>
 
 #ifdef __alpha_fix__
-- 
cgit 1.4.1