This patch adds new function libc_feholdsetround_noex_aarch64_ctx, enabling

further optimization. libc_feholdsetround_aarch64_ctx now only needs to
read the FPCR in the typical case, avoiding a redundant FPSR read.
Performance results show a good improvement (5-10% on sin()) on cores with
expensive FPCR/FPSR instructions.

1 files changed, 5 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index f1c965e321..1702300704 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2014-08-07  Wilco Dijkstra  <wdijkstr@arm.com>
 
+	* sysdeps/aarch64/fpu/math_private.h
+	(libc_feholdsetround_noex_aarch64_ctx): New function.
+
+2014-08-07  Wilco Dijkstra  <wdijkstr@arm.com>
+
 	* sysdeps/arm/armv6/strcpy.S (strcpy):
 	Fix performance issue in misaligned cases.