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ZAM support for "when" statements

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Vern Paxson 2023-06-16 16:12:56 -07:00 • committed by Arne Welzel
parent 558cec58ed
commit d89b39a0bb
7 changed files with 246 additions and 35 deletions
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18
src/script_opt/UseDefs.cc
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@ -301,13 +301,17 @@ UDs UseDefs::PropagateUDs(const Stmt* s, UDs succ_UDs, const Stmt* succ_stmt, bo
return UseUDs(s, succ_UDs);
case STMT_WHEN:
// ### Once we support compiling functions with "when"
// statements in them, we'll need to revisit this.
// For now, we don't worry about it (because the current
// "when" body semantics of deep-copy frames has different
// implications than potentially switching those shallow-copy
// frames).
return UseUDs(s, succ_UDs);
{
auto w = s->AsWhenStmt();
auto wi = w->Info();
auto uds = UD_Union(succ_UDs, ExprUDs(wi->Lambda().get()));
auto timeout = wi->TimeoutExpr();
if ( timeout )
uds = UD_Union(uds, ExprUDs(timeout.get()));
return CreateUDs(s, uds);
}
case STMT_SWITCH:
{