8 commits

Author	SHA1	Message	Date
Quentin Carbonneaux	7de34d3454	no mul->shl as it confuses address matching ... Additionally, the strength-reduction for small powers of two is handled by amd64/emit.c now.	2024-06-19 10:58:17 +02:00
Quentin Carbonneaux	96f18be71d	simplify 8*x as well as x*8	2024-06-18 16:59:42 +02:00
Quentin Carbonneaux	0631bc4fec	prevent bogus simplifications	2024-06-17 13:24:22 +02:00
Quentin Carbonneaux	e7ebdc8fb6	qbe has its own magic	2024-06-17 13:17:39 +02:00
Roland Paterson-Jones	7a19de5cf4	Simplify int mul/udiv/urem of 2^N into shl/shr/and. ... Passes the "standard" test suite. (cproc bootstrap, hare[c] make test, roland units, linpack/coremark run) However linpack benchmark is now notably slower. Coremark is ~2% faster. As noticed before, linmark timing is dubious, and maybe my cheap (AMD) laptop prefers mul to shl.	2024-06-16 21:42:17 +02:00
Quentin Carbonneaux	26c1c30b7d	new blit instruction	2022-12-14 23:18:26 +01:00
Quentin Carbonneaux	2c2db15995	do sign/zero extensions removal in copy.c	2017-02-25 15:14:12 -05:00
Quentin Carbonneaux	df61decee5	start a new simplification pass	2017-02-24 15:52:56 -05:00