d0p1/ack
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

replace more multiplies by shifts

Browse source
This commit is contained in:
ceriel 1989-03-02 18:56:05 +00:00
parent 3ab954e38c
commit ac2b7f8d44
1 changed files with 20 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
util/opt/patterns
View file

@ -8,8 +8,10 @@ dec loc sbi $3==w: loc $2+1 sbi w
ldc adi ldc sbi $2==2*w && $4==2*w: ldc $1-$3 adi 2*w
loc adi loc adi $2==w && $4==w: loc $1+$3 adi w
ldc adi ldc adi $2==2*w && $4==2*w: ldc $1+$3 adi 2*w
/*
loc adi loc mli $2==w && $4==w: loc $3 mli w loc $1*$3 adi w
loc adi loc sli $2==w && $4==w && $3==1: loc $3 sli w loc 2*$1 adi w
*/
adp $1==0:
adp adp : adp $1+$2
adp lof : lof $1+$2
@ -219,6 +221,22 @@ loc mlu $1==32 && $2==w: loc 5 slu w
loc mlu $1==64 && $2==w: loc 6 slu w
loc mlu $1==128 && $2==w: loc 7 slu w
loc mlu $1==256 && $2==w: loc 8 slu w
ldc mli $1==2 && $2==2*w: loc 1 sli 2*w
ldc mli $1==4 && $2==2*w: loc 2 sli 2*w
ldc mli $1==8 && $2==2*w: loc 3 sli 2*w
ldc mli $1==16 && $2==2*w: loc 4 sli 2*w
ldc mli $1==32 && $2==2*w: loc 5 sli 2*w
ldc mli $1==64 && $2==2*w: loc 6 sli 2*w
ldc mli $1==128 && $2==2*w: loc 7 sli 2*w
ldc mli $1==256 && $2==2*w: loc 8 sli 2*w
ldc mlu $1==2 && $2==2*w: loc 1 slu 2*w
ldc mlu $1==4 && $2==2*w: loc 2 slu 2*w
ldc mlu $1==8 && $2==2*w: loc 3 slu 2*w
ldc mlu $1==16 && $2==2*w: loc 4 slu 2*w
ldc mlu $1==32 && $2==2*w: loc 5 slu 2*w
ldc mlu $1==64 && $2==2*w: loc 6 slu 2*w
ldc mlu $1==128 && $2==2*w: loc 7 slu 2*w
ldc mlu $1==256 && $2==2*w: loc 8 slu 2*w
loc adi !defined($2): adi $1
loc sbi !defined($2): sbi $1
loc mli !defined($2): mli $1
@ -367,8 +385,10 @@ loc sbi loc sbi $2==w && $4==w: loc $1+$3 sbi w
ldc sbi ldc sbi $2==2*w && $4==2*w: ldc $1+$3 sbi 2*w
loc sbi loc adi $2==w && $4==w: loc $1-$3 sbi w
ldc sbi ldc adi $2==2*w && $4==2*w: ldc $1-$3 sbi 2*w
/*
loc sbi loc mli $2==w && $4==w: loc $3 mli w loc $1*$3 sbi w
loc sbi loc sli $2==w && $4==w && $3==1: loc $3 sli w loc 2*$1 sbi w
*/
teq teq : tne
teq tne : teq
teq zne : zeq $2