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* don't do mul->shl optimizations when compiling with overflow checking

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* keep operand size sign information in shl/shr

git-svn-id: trunk@3566 -
This commit is contained in:
florian 2006-05-18 19:30:44 +00:00
parent 14965179c4
commit 55962cef95
1 changed files with 9 additions and 2 deletions
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11
compiler/x86_64/nx64mat.pas
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@ -165,14 +165,21 @@ implementation
op:=A_SHR; op:=A_SHR;
{ special treatment of 32bit values for backwards compatibility } { special treatment of 32bit values for backwards compatibility }
{ mul optimizations require to keep the sign (FK) }
if left.resulttype.def.size<=4 then if left.resulttype.def.size<=4 then
begin begin
opsize:=OS_32; if is_signed(left.resulttype.def) then
opsize:=OS_S32
else
opsize:=OS_32;
mask:=31; mask:=31;
end end
else else
begin begin
opsize:=OS_64; if is_signed(left.resulttype.def) then
opsize:=OS_S64
else
opsize:=OS_64;
mask:=63; mask:=63;
end; end;