From: Michał Górny <mgorny@gentoo.org>
Date: Sat, 21 Oct 2017 08:28:53 +0000 (+0200)
Subject: dev-python/pyblake2: Support optimized (SSSE3+) variants
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=4db12167a96ac61607585a1642f34de44705e6ab;p=gentoo.git

dev-python/pyblake2: Support optimized (SSSE3+) variants
---

diff --git a/dev-python/pyblake2/pyblake2-0.9.3.ebuild b/dev-python/pyblake2/pyblake2-0.9.3.ebuild
index 79f80083bcb7..893bf4757e56 100644
--- a/dev-python/pyblake2/pyblake2-0.9.3.ebuild
+++ b/dev-python/pyblake2/pyblake2-0.9.3.ebuild
@@ -13,12 +13,15 @@ SRC_URI="mirror://pypi/${PN::1}/${PN}/${P}.tar.gz"
 LICENSE="CC0-1.0"
 SLOT="0"
 KEYWORDS="~amd64 ~x86"
-IUSE=""
+IUSE="cpu_flags_x86_ssse3 cpu_flags_x86_avx cpu_flags_x86_xop"
 
 python_prepare_all() {
 	local impl=REGS
-	# note: SSE2 is 2.5x slower than pure REGS...
-	# TODO: test other variants on some capable hardware
+	# note: SSE2 is 2.5x slower than pure REGS, so we ignore it
+	use cpu_flags_x86_ssse3 && impl=SSSE3
+	# this does not actually do anything but implicitly enabled SSE4.1...
+	use cpu_flags_x86_avx && impl=AVX
+	use cpu_flags_x86_xop && impl=XOP
 
 	# uncomment the implementation of choice
 	sed -i -e "/BLAKE2_COMPRESS_${impl}/s:^#::" setup.py || die