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-rw-r--r--contrib/libvpx/A03-avx-512-detection3.patch63
1 files changed, 63 insertions, 0 deletions
diff --git a/contrib/libvpx/A03-avx-512-detection3.patch b/contrib/libvpx/A03-avx-512-detection3.patch
new file mode 100644
index 000000000..6dc09e3a8
--- /dev/null
+++ b/contrib/libvpx/A03-avx-512-detection3.patch
@@ -0,0 +1,63 @@
+From ab71db65a5e8aeb107e0eb4d5fd3e03ec7452b86 Mon Sep 17 00:00:00 2001
+From: Tom Finegan <[email protected]>
+Date: Fri, 15 Jun 2018 10:58:11 -0700
+Subject: [PATCH] Clean up avx512 compiler support test.
+
+Moves the check into a function, check_gcc_avx512_compiles,
+that behaves somewhat similarly to check_gcc_machine_options.
+
+Change-Id: I2bef3ddd98e636eef12d9d5e548c43282fac7826
+---
+ build/make/configure.sh | 32 +++++++++++++++++++++-----------
+ 1 file changed, 21 insertions(+), 11 deletions(-)
+
+diff --git a/build/make/configure.sh b/build/make/configure.sh
+index 37b410edb6..d2c6b26fa1 100644
+--- a/build/make/configure.sh
++++ b/build/make/configure.sh
+@@ -426,6 +426,26 @@ check_gcc_machine_options() {
+ fi
+ }
+
++check_gcc_avx512_compiles() {
++ if disabled gcc; then
++ return
++ fi
++
++ check_cc -mavx512f <<EOF
++#include <immintrin.h>
++void f(void) {
++ __m512i x = _mm512_set1_epi16(0);
++ (void)x;
++}
++EOF
++ compile_result=$?
++ if [ ${compile_result} -ne 0 ]; then
++ log_echo " disabling avx512: not supported by compiler"
++ disable_feature avx512
++ RTCD_OPTIONS="${RTCD_OPTIONS}--disable-avx512 "
++ fi
++}
++
+ write_common_config_banner() {
+ print_webm_license config.mk "##" ""
+ echo '# This file automatically generated by configure. Do not edit!' >> config.mk
+@@ -1333,17 +1353,7 @@ EOF
+ else
+ if [ "$ext" = "avx512" ]; then
+ check_gcc_machine_options $ext avx512f avx512cd avx512bw avx512dq avx512vl
+-
+- # Confirm that the compiler really supports avx512.
+- if enabled gcc; then
+- check_cc -mavx512f <<EOF || RTCD_OPTIONS="${RTCD_OPTIONS}--disable-avx512 " && soft_disable avx512
+-#include <immintrin.h>
+-void f(void) {
+- __m512i x = _mm512_set1_epi16(0);
+- (void)x;
+-}
+-EOF
+- fi
++ check_gcc_avx512_compiles
+ else
+ # use the shortened version for the flag: sse4_1 -> sse4
+ check_gcc_machine_option ${ext%_*} $ext