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Added optimised rules for int<<8 and uint>>8 (which can be done with simple register shuffling rather than calling .sli).

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dtrg 2007-04-29 23:00:31 +00:00
parent 868b8c5075
commit df088c184b
1 changed files with 11 additions and 1 deletions
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12
mach/i80/ncg/table
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@ -728,12 +728,17 @@ gen xra a
mov %1.2,a
mvi a,{const1,0}
sbb %1.1
mov %1.1,a yields %1
mov %1.1,a yields %1
pat ngi $1==4
kills ALL
gen Call {label,".ngi4"}
pat loc sli ($1 == 8) && ($2 == 2)
with hl_or_de
gen move %1.2, %1.1
mvi %1.2, {const1,0} yields %1
pat sli $1==2
kills ALL
gen Call {label,".sli2"} yields de
@ -790,6 +795,11 @@ gen Call {label,".dvi4"}
pat slu leaving sli $1
pat loc sru ($1 == 8) && ($2 == 2)
with hl_or_de
gen move %1.1, %1.2
mvi %1.1, {const1,0} yields %1
pat sru $1==2
kills ALL
uses areg={const1,0}