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Optimize $random concatenates/selects (#3114).

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This commit is contained in:
Wilson Snyder
2021-11-28 14:17:28 -05:00
parent ffdc0afe5f
commit 692306ef44
7 changed files with 113 additions and 7 deletions
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include/verilated.cpp
-5
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@@ -308,16 +308,11 @@ vluint64_t vl_rand64() VL_MT_SAFE {
return result;
}
#ifndef VL_NO_LEGACY
// VL_RANDOM_W currently unused as $random always 32 bits, left for backwards compatibility
// LCOV_EXCL_START
WDataOutP VL_RANDOM_W(int obits, WDataOutP outwp) VL_MT_SAFE {
for (int i = 0; i < VL_WORDS_I(obits); ++i) outwp[i] = vl_rand64();
// Last word is unclean
return outwp;
}
// LCOV_EXCL_STOP
#endif
IData VL_RANDOM_SEEDED_II(IData seed) VL_MT_SAFE {
Verilated::threadContextp()->randSeed(static_cast<int>(seed));