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authorDimitry Andric <dim@FreeBSD.org>2019-08-20 20:51:06 +0000
committerDimitry Andric <dim@FreeBSD.org>2019-08-20 20:51:06 +0000
commit8f3cadc28cb2bb9e8f9d69eeaaea1f57f2f7b2ab (patch)
tree05a2b6ec297fe6283d9557c791445d1daf88dcd0 /lib/scudo/standalone/crc32_hw.cc
parent63714eb5809e39666dec2454c354195e76f916ba (diff)
downloadsrc-8f3cadc28cb2bb9e8f9d69eeaaea1f57f2f7b2ab.tar.gz
src-8f3cadc28cb2bb9e8f9d69eeaaea1f57f2f7b2ab.zip
Vendor import of stripped compiler-rt trunk r366426 (just before the release_90vendor/compiler-rt/compiler-rt-trunk-r366426
Notes
Notes: svn path=/vendor/compiler-rt/dist/; revision=351282 svn path=/vendor/compiler-rt/compiler-rt-trunk-r366426/; revision=351283; tag=vendor/compiler-rt/compiler-rt-trunk-r366426
Diffstat (limited to 'lib/scudo/standalone/crc32_hw.cc')
-rw-r--r--lib/scudo/standalone/crc32_hw.cc19
1 files changed, 19 insertions, 0 deletions
diff --git a/lib/scudo/standalone/crc32_hw.cc b/lib/scudo/standalone/crc32_hw.cc
new file mode 100644
index 000000000000..f4dae7b5fea8
--- /dev/null
+++ b/lib/scudo/standalone/crc32_hw.cc
@@ -0,0 +1,19 @@
+//===-- crc32_hw.h ----------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "checksum.h"
+
+namespace scudo {
+
+#if defined(__SSE4_2__) || defined(__ARM_FEATURE_CRC32)
+u32 computeHardwareCRC32(u32 Crc, uptr Data) {
+ return static_cast<u32>(CRC32_INTRINSIC(Crc, Data));
+}
+#endif // defined(__SSE4_2__) || defined(__ARM_FEATURE_CRC32)
+
+} // namespace scudo