From 1fc08f5e9ef733ef1ce6f363fecedc2260e78974 Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
Date: Sat, 14 Apr 2012 13:54:10 +0000
Subject: Vendor import of llvm trunk r154661:
http://llvm.org/svn/llvm-project/llvm/trunk@r154661
---
lib/Support/Hashing.cpp | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
create mode 100644 lib/Support/Hashing.cpp
(limited to 'lib/Support/Hashing.cpp')
diff --git a/lib/Support/Hashing.cpp b/lib/Support/Hashing.cpp
new file mode 100644
index 0000000..c69efb7
--- /dev/null
+++ b/lib/Support/Hashing.cpp
@@ -0,0 +1,29 @@
+//===-------------- lib/Support/Hashing.cpp -------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file provides implementation bits for the LLVM common hashing
+// infrastructure. Documentation and most of the other information is in the
+// header file.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/Hashing.h"
+
+using namespace llvm;
+
+// Provide a definition and static initializer for the fixed seed. This
+// initializer should always be zero to ensure its value can never appear to be
+// non-zero, even during dynamic initialization.
+size_t llvm::hashing::detail::fixed_seed_override = 0;
+
+// Implement the function for forced setting of the fixed seed.
+// FIXME: Use atomic operations here so that there is no data race.
+void llvm::set_fixed_execution_hash_seed(size_t fixed_value) {
+ hashing::detail::fixed_seed_override = fixed_value;
+}
--
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