Optimizations on mutable variables
Motivation and Context
Description
let mut <lhs> = <rhs> in <body> is inlined in <body> iif:
-
<lhs>is never mutated (the mutation (i.e.E_assign's) count is 0) -
<rhs>is pure
also (was a TODO from @tomjack, put I did not see any difference in the tests after this one):
let mut <lhs> = <rhs> in <body> is pure only iif:
-
<rhs>is pure -
<body>only impurities are assigns/deref of<lhs>
Types of changes
-
Bug fix (non-breaking change which fixes an issue) -
New feature (non-breaking change which adds functionality) -
Breaking change (fix or feature that would cause existing functionality to not work as expected) -
Performance improvement (non-breaking change that improves performance) -
None (change with no changelog)
Changelog
Apply michelson optimizations on mutable variables
Checklist:
-
Changes follow the existing coding style (use dune @fmtto check). -
Tests for the changes have been added (for bug fixes / feature). -
Documentation has been updated. -
Changelog description has been added (if appropriate). -
Examples in changed behaviour have been added to the changelog (for breaking change / feature).
Edited by Rémi