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* handle aligned assignments with size < sizeof(aint) properly, resolves #19355

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git-svn-id: trunk@17468 -
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florian 2011-05-15 13:47:26 +00:00
parent 54bbaa037e
commit f1b13dca19
1 changed files with 10 additions and 5 deletions
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15
compiler/ncgld.pas
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@ -567,6 +567,7 @@ implementation
otlabel,hlabel,oflabel : tasmlabel; otlabel,hlabel,oflabel : tasmlabel;
href : treference; href : treference;
releaseright : boolean; releaseright : boolean;
alignmentrequirement,
len : aint; len : aint;
r : tregister; r : tregister;
oldflowcontrol : tflowcontrol; oldflowcontrol : tflowcontrol;
@ -777,13 +778,17 @@ implementation
{ TODO: HACK: unaligned test, maybe remove all unaligned locations (array of char) from the compiler} { TODO: HACK: unaligned test, maybe remove all unaligned locations (array of char) from the compiler}
{ Use unaligned copy when the offset is not aligned } { Use unaligned copy when the offset is not aligned }
len:=left.resultdef.size; len:=left.resultdef.size;
if (right.location.reference.offset mod sizeof(aint)<>0) or
(left.location.reference.offset mod sizeof(aint)<>0) or { data smaller than an aint has less alignment requirements }
(right.resultdef.alignment<sizeof(aint)) or alignmentrequirement:=min(len,sizeof(aint));
if (right.location.reference.offset mod alignmentrequirement<>0) or
(left.location.reference.offset mod alignmentrequirement<>0) or
(right.resultdef.alignment<alignmentrequirement) or
((right.location.reference.alignment<>0) and ((right.location.reference.alignment<>0) and
(right.location.reference.alignment<sizeof(aint))) or (right.location.reference.alignment<alignmentrequirement)) or
((left.location.reference.alignment<>0) and ((left.location.reference.alignment<>0) and
(left.location.reference.alignment<sizeof(aint))) then (left.location.reference.alignment<alignmentrequirement)) then
cg.g_concatcopy_unaligned(current_asmdata.CurrAsmList,right.location.reference,left.location.reference,len) cg.g_concatcopy_unaligned(current_asmdata.CurrAsmList,right.location.reference,left.location.reference,len)
else else
cg.g_concatcopy(current_asmdata.CurrAsmList,right.location.reference,left.location.reference,len); cg.g_concatcopy(current_asmdata.CurrAsmList,right.location.reference,left.location.reference,len);