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Fix optimizer bug.

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This commit is contained in:
Stephen Chung
2021-07-01 12:27:29 +08:00
parent a0f51a1a39
commit 8c802dcd58
3 changed files with 31 additions and 1 deletions
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8
src/optimize.rs
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@@ -297,8 +297,14 @@ fn optimize_stmt_block(
Stmt::Noop(pos)
};
}
// { ...; stmt; noop } -> done
[.., ref second_last_stmt, Stmt::Noop(_)]
if second_last_stmt.returns_value() => {}
if second_last_stmt.returns_value() =>
{
break
}
// { ...; stmt_that_returns; pure_non_value_stmt } -> { ...; stmt_that_returns; noop }
// { ...; stmt; pure_non_value_stmt } -> { ...; stmt }
[.., ref second_last_stmt, ref last_stmt]
if !last_stmt.returns_value() && is_pure(last_stmt) =>
{