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304cb3c4c6
get_execution_seed returns a size_t which varies across platforms, but its users actually always feed it into a uint64_t role so it makes sense to be consistent. Mostly this is just a tidy-up, but it also apparently allows PCH files to be shared between Clang compilers built for 32-bit and 64-bit hosts. llvm-svn: 341113
30 lines
1.1 KiB
C++
30 lines
1.1 KiB
C++
//===-------------- lib/Support/Hashing.cpp -------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file provides implementation bits for the LLVM common hashing
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// infrastructure. Documentation and most of the other information is in the
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// header file.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/Hashing.h"
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using namespace llvm;
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// Provide a definition and static initializer for the fixed seed. This
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// initializer should always be zero to ensure its value can never appear to be
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// non-zero, even during dynamic initialization.
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uint64_t llvm::hashing::detail::fixed_seed_override = 0;
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// Implement the function for forced setting of the fixed seed.
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// FIXME: Use atomic operations here so that there is no data race.
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void llvm::set_fixed_execution_hash_seed(uint64_t fixed_value) {
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hashing::detail::fixed_seed_override = fixed_value;
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}
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