[FFmpeg-devel] [PATCH 1/9] configure: loongson revert expensive optimizations

[Shiyou Yin]

Revert expensive optimizations in gcc O3 optimization for loongson.
The bug in  gcc-4.9.x has been fixed in gcc master branch.
Loongson released gcc-4.9.3-3.fc21.loongson with this patch.
More bug info see:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67736
https://gcc.gnu.org/ml/gcc-patches/2012-05/msg00401.html

Change-Id: I871e8b651cb9c2723aa2559f2617f0720b37fae7
Signed-off-by: Shiyou Yin <yinshiyou-hf at loongson.cn>
---
 configure | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index b1a4dcf..17a7ea9 100755
--- a/configure
+++ b/configure
@@ -4789,13 +4789,13 @@ elif enabled mips; then
                 disable mipsdspr2
                 case $cpu in
                     loongson3*)
-                        cpuflags="-march=loongson3a -mhard-float -fno-expensive-optimizations"
+                        cpuflags="-march=loongson3a -mhard-float"
                     ;;
                     loongson2e)
-                        cpuflags="-march=loongson2e -mhard-float -fno-expensive-optimizations"
+                        cpuflags="-march=loongson2e -mhard-float"
                     ;;
                     loongson2f)
-                        cpuflags="-march=loongson2f -mhard-float -fno-expensive-optimizations"
+                        cpuflags="-march=loongson2f -mhard-float"
                     ;;
                 esac
             ;;
-- 
2.1.0