[FFmpeg-devel] [PATCH] configure: loongson revert expensive optimizations.

[Shiyou Yin]

revert expensive optimizations in gcc O3 optimization.
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: I82e50376ea152789bf512f08bc5a273693be8aad
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 7c14323..074bb65 100755
--- a/configure
+++ b/configure
@@ -4765,13 +4765,13 @@ 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