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Fix: cmp.l A,A is not the same as tst.l A

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ceriel 1990-09-25 14:59:28 +00:00
parent 5eb4a8d88f
commit 4c8596ee05
1 changed files with 9 additions and 4 deletions
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13
mach/m68020/top/table
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@ -79,11 +79,16 @@ move.w DREG,DREG2 : NO32 A,DREG2 : move.w DREG2,DREG
move.l DREG,DREG2 : ANY A,DREG2 : move.l DREG2,DREG
{no_part(DREG2,A)} -> ANY A,DREG : move.l DREG,DREG2 ;
/* change some compares to tests */
cmp.w A,A -> tst.w A ;
cmp.l A,A -> tst.l A ;
cmp.b A,A -> tst.b A ;
cmp.b A,A : beq LAB -> bra LAB ;
cmp.w A,A : beq LAB -> bra LAB ;
cmp.l A,A : beq LAB -> bra LAB ;
/* cannot delete cmp's because they affect condition codes (obvious, but ... )*/
cmp.b A,A : bne LAB -> cmp.b A,A ;
cmp.w A,A : bne LAB -> cmp.w A,A ;
cmp.l A,A : bne LAB -> cmp.l A,A ;
/* change some compares to tests */
cmp.w #0,D : beq LAB -> tst.w D : beq LAB ;
cmp.w #0,D : bne LAB -> tst.w D : bne LAB ;
cmp.w #0,D : blt LAB -> tst.w D : blt LAB ;