Branch: refs/heads/blead
Home: https://github.com/Perl/perl5
Commit: 7015de19863573066cc75ff79721681082895466
https://github.com/Perl/perl5/commit/7015de19863573066cc75ff79721681082895466
Author: Richard Leach <richardle...@users.noreply.github.com>
Date: 2024-12-16 (Mon, 16 Dec 2024)
Changed paths:
M lib/B/Deparse.pm
M lib/B/Deparse.t
M op.c
Log Message:
-----------
op_scope/newCONDOP: Optimise away empty else blocks in OP_COND_EXPR
This commit comprises two main changes:
* Not wrapping a bare OP_STUB in an enter/leave pair (Perl_op_scope)
* Checking for a bare OP_STUB in the `falseop` argument when building
an OP_COND_EXPR and then freeing it, rather than adding it as a
sibling to the `first` and `trueop` branches.
The main benefits of this are:
* lower memory usage due to unnecessary OP removal
* faster execution due to unnecessary OPs not being executed
There are also some small changes to Deparse.pm and an additional
Deparse.t test.
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