weaselab/conflict-set
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Explain purpose for prefetches in getFirstChild

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Andrew Noyes
2024-11-15 16:29:42 -08:00
parent 3a34d3cecb
commit 661ffcd843
1 changed files with 2 additions and 0 deletions
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ConflictSet.cpp
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@@ -1406,10 +1406,12 @@ TaggedNodePointer getChildGeq(Node *self, int child) {
TaggedNodePointer getFirstChild(Node0 *) { return nullptr; } TaggedNodePointer getFirstChild(Node0 *) { return nullptr; }
TaggedNodePointer getFirstChild(Node3 *self) { TaggedNodePointer getFirstChild(Node3 *self) {
// Improves scan performance
__builtin_prefetch(self->children[1]); __builtin_prefetch(self->children[1]);
return self->children[0]; return self->children[0];
} }
TaggedNodePointer getFirstChild(Node16 *self) { TaggedNodePointer getFirstChild(Node16 *self) {
// Improves scan performance
__builtin_prefetch(self->children[1]); __builtin_prefetch(self->children[1]);
return self->children[0]; return self->children[0];
} }