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Added some patterns to evaluate constant shifts

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ceriel 1988-06-22 13:47:57 +00:00
parent 83a22b318c
commit ec40d28c25
1 changed files with 8 additions and 0 deletions
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8
util/opt/patterns
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@ -179,6 +179,14 @@ ldc mli $1==1 && $2==2*w:
loc mlu $1==1 && $2==w:
ldc mlu $1==1 && $2==2*w:
loc sbi $1==1 && $2==w: dec
loc loc sli $3==w: loc ($1 << $2)
loc loc slu $3==w: loc ($1 << $2)
ldc loc sli $3==2*w: ldc ($1 << $2)
ldc loc slu $3==2*w: ldc ($1 << $2)
loc loc sri $3==w: loc ($1 >> $2)
loc loc sru $1 >= 0 && $3==w: loc ($1 >> $2)
ldc loc sri $3==2*w: ldc ($1 >> $2)
ldc loc sru $1 >= 0 && $3==2*w: ldc ($1 >> $2)
loc loe mlu $3==w: loe $2 loc $1 mlu w
loc lol mlu $3==w: lol $2 loc $1 mlu w
ldc lde mlu $3==2*w: lde $2 ldc $1 mlu 2*w