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florian 2022-11-29 23:20:23 +01:00
parent 2c3b78682a
commit a1a2549cf1
1 changed files with 4 additions and 1 deletions
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5
compiler/x86/aoptx86.pas
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@ -23,7 +23,7 @@ unit aoptx86;
{$i fpcdefs.inc} {$i fpcdefs.inc}
{ $define DEBUG_AOPTCPU} {$define DEBUG_AOPTCPU}
{$ifdef EXTDEBUG} {$ifdef EXTDEBUG}
{$define DEBUG_AOPTCPU} {$define DEBUG_AOPTCPU}
@ -9451,6 +9451,8 @@ unit aoptx86;
smaller code, but won't account for x + y causing an overflow). [Kit] smaller code, but won't account for x + y causing an overflow). [Kit]
} }
DebugMsg(SPeepholeOptimization + 'MovMov*Shr2MovMov*Rcr', p);
if (getsupreg(taicpu(hp2).oper[1]^.reg) = getsupreg(taicpu(hp1).oper[1]^.reg)) then if (getsupreg(taicpu(hp2).oper[1]^.reg) = getsupreg(taicpu(hp1).oper[1]^.reg)) then
{ Change first MOV command to have the same register as the final output } { Change first MOV command to have the same register as the final output }
taicpu(p).oper[1]^.reg := taicpu(hp1).oper[1]^.reg taicpu(p).oper[1]^.reg := taicpu(hp1).oper[1]^.reg
@ -13692,6 +13694,7 @@ unit aoptx86;
- It is possible to set memory operands using this method, but this creates an even greater false dependency, so don't do this at all - It is possible to set memory operands using this method, but this creates an even greater false dependency, so don't do this at all
} }
taicpu(p).opcode := A_OR; taicpu(p).opcode := A_OR;
DebugMsg(SPeepholeOptimization + 'Mov-12Or-1',p);
Result := True; Result := True;
end; end;
else else