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* widen cardinal+signed operations

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This commit is contained in:
peter 2003-06-03 21:04:43 +00:00
parent dc64b1b54f
commit 5197c95be6
1 changed files with 10 additions and 13 deletions
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23
compiler/nadd.pas
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@ -820,13 +820,10 @@ implementation
begin
if is_signed(ld) and
{ then rd = u32bit }
(nodetype in [addn,subn,muln]) and
{ convert positive constants to u32bit }
not(is_constintnode(left) and
(tordconstnode(left).value >= 0)) and
{ range/overflow checking on mixed signed/cardinal expressions }
{ is only possible if you convert everything to 64bit (JM) }
((aktlocalswitches * [cs_check_overflow,cs_check_range] <> []) and
(nodetype in [addn,subn,muln])) then
(tordconstnode(left).value >= 0)) then
begin
{ perform the operation in 64bit }
CGMessage(type_w_mixed_signed_unsigned);
@ -843,19 +840,17 @@ implementation
begin
if is_signed(ld) and
not(is_constintnode(left) and
(tordconstnode(left).value >= 0)) and
(cs_check_range in aktlocalswitches) then
(tordconstnode(left).value >= 0)) then
CGMessage(type_w_mixed_signed_unsigned2);
inserttypeconv(left,u32bittype);
end;
if is_signed(rd) and
{ then ld = u32bit }
(nodetype in [addn,subn,muln]) and
{ convert positive constants to u32bit }
not(is_constintnode(right) and
(tordconstnode(right).value >= 0)) and
((aktlocalswitches * [cs_check_overflow,cs_check_range] <> []) and
(nodetype in [addn,subn,muln])) then
(tordconstnode(right).value >= 0)) then
begin
{ perform the operation in 64bit }
CGMessage(type_w_mixed_signed_unsigned);
@ -872,8 +867,7 @@ implementation
begin
if is_signed(rd) and
not(is_constintnode(right) and
(tordconstnode(right).value >= 0)) and
(cs_check_range in aktlocalswitches) then
(tordconstnode(right).value >= 0)) then
CGMessage(type_w_mixed_signed_unsigned2);
inserttypeconv(right,u32bittype);
end;
@ -1959,7 +1953,10 @@ begin
end.
{
$Log$
Revision 1.91 2003-05-26 21:15:18 peter
Revision 1.92 2003-06-03 21:04:43 peter
* widen cardinal+signed operations
Revision 1.91 2003/05/26 21:15:18 peter
* disable string node optimizations for the moment
Revision 1.90 2003/05/26 19:38:28 peter