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use __builtin_prefetch for clang/gcc

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-05-08 19:09:59 +01:00
parent ad6e128cab
commit 41072e3125
1 changed files with 4 additions and 0 deletions
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4
src/sat/sat_solver.cpp
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@ -792,7 +792,11 @@ namespace sat {
}
if (m_config.m_propagate_prefetch) {
#if defined(__GLUC__) || defined(__clang__)
__builtin_prefetch((const char*)(&*(m_watches[l.index()].c_ptr()));
#else
_mm_prefetch((const char*)(&*(m_watches[l.index()].c_ptr())), _MM_HINT_T1);
#endif
}
SASSERT(!l.sign() || m_phase[v] == NEG_PHASE);