x86_64 assembly pack: refine clang detection.

[oweals/openssl.git] / crypto / bn / asm / rsaz-x86_64.pl

diff --git a/crypto/bn/asm/rsaz-x86_64.pl b/crypto/bn/asm/rsaz-x86_64.pl
index 120b4734928e96ead6938222b17e4528dda98ae2..cd651f7e78074a8007ff2db44f4360476696c056 100755 (executable)
--- a/crypto/bn/asm/rsaz-x86_64.pl
+++ b/crypto/bn/asm/rsaz-x86_64.pl
@@ -113,6 +113,11 @@ if (!$addx && $win64 && ($flavour =~ /masm/ || $ENV{ASM} =~ /ml64/) &&
        $addx = ($1>=11);
 }
 
+if (!$addx && `$ENV{CC} -v 2>&1` =~ /(^clang version|based on LLVM) ([3-9])\.([0-9]+)/) {
+       my $ver = $2 + $3/100.0;        # 3.1->3.01, 3.10->3.10
+       $addx = ($ver>=3.03);
+}
+
 ($out, $inp, $mod) = ("%rdi", "%rsi", "%rbp"); # common internal API
 {
 my ($out,$inp,$mod,$n0,$times) = ("%rdi","%rsi","%rdx","%rcx","%r8d");