10 Commits

Author	SHA1	Message	Date
Zachary Snow	eda9a34ad5	add simplification assumption for reversed sized ranges	2021-07-16 16:32:11 -04:00
Zachary Snow	2f860ff220	fix trivial hash collisions ... Data.Hashable can produce hashes differing little in their upper bits if only the last character of the string is changed. Because we were using the upper bits of the hash in shortHash, this could lead to avoidable hash collisions. This change includes minor simplification optimizations which surfaced this collision in the existing struct_ident_scope test.	2021-07-07 20:14:11 -04:00
Zachary Snow	465060ce4f	fold concatenations of number literals	2021-02-11 17:36:05 -05:00
Zachary Snow	5c2632982e	simplify substitution avoids shadowing	2021-02-07 14:08:19 -05:00
Zachary Snow	b8759776ca	limited progress on typeof signedness ... - ensure concats and repeats stay unsigned - defer unbased-unsized conversion to enable cast semantics - disable inaccurate folding of binary operations of based numbers - fix typeof and size cast binop signedness logic - fix typeof $unsigned and $signed - test harness allows production of `integer unsigned`	2021-02-01 10:17:50 -05:00
Zachary Snow	d137fd3d68	fix premature elaboration of single element patterns	2020-12-07 16:23:29 -07:00
Zachary Snow	7f0c33ab4e	constant fold adjacent adds through association	2020-08-16 14:28:13 -04:00
Zachary Snow	8a8b089a92	assume 0-based sized ranges are non-negative	2020-08-16 13:44:40 -04:00
Zachary Snow	b2291a2046	use explicit size for large folded constants	2020-07-12 18:06:37 -06:00
Zachary Snow	d88c516d33	enhanced handling of number literals ... - number literals are parsed rather than stored as strings - fix array query functions used on non-trivial number literals - more efficient expression simplification recursion - expanded constant folding scenarios	2020-07-12 15:06:27 -06:00