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author | JF Bastien <jfb@google.com> | 2014-06-18 06:33:23 +0000 |
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committer | JF Bastien <jfb@google.com> | 2014-06-18 06:33:23 +0000 |
commit | 02b4e6e7ab1ad79336d9f23f3644c90aecc8457a (patch) | |
tree | 8b967c714bd45e4ee587cefcdfb9ea407b41fbd2 /lib/Support | |
parent | 1d04a2324c4e86320b5452f5262782c569cd3315 (diff) | |
download | llvm-02b4e6e7ab1ad79336d9f23f3644c90aecc8457a.tar.gz llvm-02b4e6e7ab1ad79336d9f23f3644c90aecc8457a.tar.bz2 llvm-02b4e6e7ab1ad79336d9f23f3644c90aecc8457a.tar.xz |
Revert "Random Number Generator (llvm)"
This reverts commit cccba093090d127e0b6d17473b14c264c14c5259.
It causes build breakage.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211146 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support')
-rw-r--r-- | lib/Support/CMakeLists.txt | 1 | ||||
-rw-r--r-- | lib/Support/RandomNumberGenerator.cpp | 52 |
2 files changed, 0 insertions, 53 deletions
diff --git a/lib/Support/CMakeLists.txt b/lib/Support/CMakeLists.txt index eac95c262b..2438d729d8 100644 --- a/lib/Support/CMakeLists.txt +++ b/lib/Support/CMakeLists.txt @@ -41,7 +41,6 @@ add_llvm_library(LLVMSupport MD5.cpp PluginLoader.cpp PrettyStackTrace.cpp - RandomNumberGenerator.cpp Regex.cpp SmallPtrSet.cpp SmallVector.cpp diff --git a/lib/Support/RandomNumberGenerator.cpp b/lib/Support/RandomNumberGenerator.cpp deleted file mode 100644 index 5513982e7b..0000000000 --- a/lib/Support/RandomNumberGenerator.cpp +++ /dev/null @@ -1,52 +0,0 @@ -//===-- RandomNumberGenerator.cpp - Implement RNG class -------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements random number generation (RNG). -// The current implementation is NOT cryptographically secure as it uses -// the C++11 <random> facilities. -// -//===----------------------------------------------------------------------===// - -#define DEBUG_TYPE "rng" -#include "llvm/Support/RandomNumberGenerator.h" -#include "llvm/Support/CommandLine.h" -#include "llvm/Support/Debug.h" - -using namespace llvm; - -// Tracking BUG: 19665 -// http://llvm.org/bugs/show_bug.cgi?id=19665 -// -// Do not change to cl::opt<uint64_t> since this silently breaks argument parsing. -static cl::opt<unsigned long long> -Seed("rng-seed", cl::value_desc("seed"), - cl::desc("Seed for the random number generator"), cl::init(0)); - -RandomNumberGenerator::RandomNumberGenerator(StringRef Salt) { - DEBUG( - if (Seed == 0) - errs() << "Warning! Using unseeded random number generator.\n" - ); - - // Combine seed and salt using std::seed_seq. - // Entropy: Seed-low, Seed-high, Salt... - size_t Size = Salt.size() + 2; - uint32_t Data[Size]; - Data[0] = Seed; - Data[1] = Seed >> 32; - std::copy_n(Salt.begin(), Salt.size(), Data + 2); - - std::seed_seq SeedSeq(Data, Data + Size); - Generator.seed(SeedSeq); -} - -uint64_t RandomNumberGenerator::next(uint64_t Max) { - std::uniform_int_distribution<uint64_t> distribution(0, Max - 1); - return distribution(Generator); -} |