Author: emaste
Date: Wed Jul 26 23:14:21 2017
New Revision: 321593
URL: https://svnweb.freebsd.org/changeset/base/321593
Log:
MFC r319718: arm64: add ".arch armv8-a+crc" to allow use of crc instructions
With Clang 5.0 the .arch directive is required, otherwise Clang
complains "error: instruction requires: crc".
This was reported in D10499 but not added initially, because clang 3.8
available on a ref machine reported unknown directive. Clang 4.0 allows
but does not require the directive.
Sponsored by: The FreeBSD Foundation
Modified:
stable/11/sys/libkern/arm64/crc32c_armv8.S
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/libkern/arm64/crc32c_armv8.S
==============================================================================
--- stable/11/sys/libkern/arm64/crc32c_armv8.S Wed Jul 26 23:05:25 2017
(r321592)
+++ stable/11/sys/libkern/arm64/crc32c_armv8.S Wed Jul 26 23:14:21 2017
(r321593)
@@ -27,6 +27,7 @@
#include <machine/asm.h>
__FBSDID("$FreeBSD$");
+.arch armv8-a+crc
/*
* uint32_t
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