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-rw-r--r--src/crypto/sha/asm/sha1-x86_64.pl26
1 files changed, 18 insertions, 8 deletions
diff --git a/src/crypto/sha/asm/sha1-x86_64.pl b/src/crypto/sha/asm/sha1-x86_64.pl
index 59b1607..124034d 100644
--- a/src/crypto/sha/asm/sha1-x86_64.pl
+++ b/src/crypto/sha/asm/sha1-x86_64.pl
@@ -92,15 +92,25 @@ $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
( $xlate="${dir}../../perlasm/x86_64-xlate.pl" and -f $xlate) or
die "can't locate x86_64-xlate.pl";
-# In upstream, this is controlled by shelling out to the compiler to check
-# versions, but BoringSSL is intended to be used with pre-generated perlasm
-# output, so this isn't useful anyway.
-#
-# TODO(davidben): Enable this after testing. $avx goes up to 2.
-$avx = 0;
+if (`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
+ =~ /GNU assembler version ([2-9]\.[0-9]+)/) {
+ $avx = ($1>=2.19) + ($1>=2.22);
+}
+
+if (!$avx && $win64 && ($flavour =~ /nasm/ || $ENV{ASM} =~ /nasm/) &&
+ `nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)/) {
+ $avx = ($1>=2.09) + ($1>=2.10);
+}
+
+if (!$avx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
+ `ml64 2>&1` =~ /Version ([0-9]+)\./) {
+ $avx = ($1>=10) + ($1>=11);
+}
+
+if (!$avx && `$ENV{CC} -v 2>&1` =~ /(^clang version|based on LLVM) ([2-9]\.[0-9]+)/) {
+ $avx = ($2>=3.0) + ($2>3.0);
+}
-# TODO(davidben): Consider enabling the Intel SHA Extensions code once it's
-# been tested.
$shaext=0; ### set to zero if compiling for 1.0.1
$avx=1 if (!$shaext && $avx);