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* RemoveSuperfluousMove should not mess with moves targetting lr or pc

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git-svn-id: trunk@22185 -
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florian 2012-08-22 19:51:31 +00:00
parent 93eb20d407
commit f3f5be2af1
1 changed files with 4 additions and 0 deletions
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4
compiler/arm/aoptcpu.pas
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@ -282,6 +282,10 @@ Implementation
if MatchInstruction(movp, A_MOV, [taicpu(p).condition], [PF_None]) and
(taicpu(movp).ops=2) and {We can't optimize if there is a shiftop}
MatchOperand(taicpu(movp).oper[1]^, taicpu(p).oper[0]^.reg) and
{ don't mess with moves to pc }
(taicpu(movp).oper[0]^.reg<>NR_PC) and
{ don't mess with moves to lr }
(taicpu(movp).oper[0]^.reg<>NR_R14) and
{There is a special requirement for MUL and MLA, oper[0] and oper[1] are not allowed to be the same}
not (
(taicpu(p).opcode in [A_MLA, A_MUL]) and