From 82641e16aa83c693974297951e23ba08a3e89652 Mon Sep 17 00:00:00 2001
From: Wilco Dijkstra <wdijkstr@arm.com>
Date: Mon, 13 Jul 2015 12:48:33 +0100
Subject: Add AArch64 versions of math_opt_barrier and math_force_eval that
 avoid going via memory.

---
 sysdeps/aarch64/fpu/math_private.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'sysdeps')

diff --git a/sysdeps/aarch64/fpu/math_private.h b/sysdeps/aarch64/fpu/math_private.h
index b3c2509..1f02ddb 100644
--- a/sysdeps/aarch64/fpu/math_private.h
+++ b/sysdeps/aarch64/fpu/math_private.h
@@ -22,6 +22,11 @@
 #include <fenv.h>
 #include <fpu_control.h>
 
+#define math_opt_barrier(x) \
+({ __typeof (x) __x = (x); __asm ("" : "+w" (__x)); __x; })
+#define math_force_eval(x) \
+({ __typeof (x) __x = (x); __asm __volatile__ ("" : : "w" (__x)); })
+
 extern __always_inline double
 __ieee754_sqrt (double d)
 {
-- 
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