Fix ir2 conversion of unused casts.
commit6f37ac8c7c8a9c66c8e95870e1cefafcc2a249d7
authorStas Boukarev <stassats@gmail.com>
Tue, 17 Oct 2017 11:27:40 +0000 (17 14:27 +0300)
committerStas Boukarev <stassats@gmail.com>
Tue, 17 Oct 2017 17:27:51 +0000 (17 20:27 +0300)
tree4651e10f3483f92cc458dd45921a2dd3b65bc5ad
parent97119373157518ddfdedf681ef6b728d06241481
Fix ir2 conversion of unused casts.

MAY-DELETE-VESTIGIAL-EXIT may prevent an unused cast from being
deleted.

Fixes lp#1723990
src/compiler/ir2tran.lisp
tests/compiler-2.pure.lisp