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added patterns for stackheight mechanism

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eck 1990-07-19 17:22:56 +00:00
parent 43b01a70a0
commit b23125354b
1 changed files with 18 additions and 1 deletions
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19
mach/i86/ncg/table
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@ -2719,7 +2719,24 @@ pat loc cmu zne $1<256 && $1>=0 && $2==2 call loccmuzxx("jne")
* Group 13 : Branch Instructions *
*******************************************************************/
pat bra
pat lab stackheight($1)==2 && !fallthrough($1)
with STACK
gen labeldef $1 yields ax
pat lab stackheight($1)==2 && fallthrough($1)
with ACC STACK
gen labeldef $1 yields ax
pat lab stackheight($1)!=2
with STACK
kills ALL
gen labeldef $1
pat bra stackheight($1)==2
with ACC STACK
gen jmp {label,$1}
pat bra stackheight($1)!=2
with STACK
gen jmp {label,$1}