virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

Revert "configure: Enable GCC vectorization on ≥4.9 on x86"

Browse Source 
This reverts commit cb8646af24.

This change has brough more issues than benefits, between compilation
time failures depending on flags used and code miscompilation causing
runtime crashes.

See the "[PATCH 2/2] configure: Enable GCC vectorization on ≥4.9"
thread in the ffmpeg-devel mailing list for the relevant discussion.

(cherry picked from commit fd6dbc5385)
This commit is contained in:
James Almer 2016-07-09 16:00:06 -03:00
parent ce36e74e75
commit f9a150fc31
1 changed files with 1 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
configure vendored
View File

@ -6125,11 +6125,7 @@ elif enabled ccc; then
add_cflags -msg_disable nonstandcast
add_cflags -msg_disable unsupieee
elif enabled gcc; then
case $gcc_basever in
4.9*) enabled x86 || check_optflags -fno-tree-vectorize ;;
4.*) check_optflags -fno-tree-vectorize ;;
*) enabled x86 || check_optflags -fno-tree-vectorize ;;
esac
check_optflags -fno-tree-vectorize
check_cflags -Werror=format-security
check_cflags -Werror=implicit-function-declaration
check_cflags -Werror=missing-prototypes