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* type left-over parts of parameters as arrays of "stack slot alignment" if

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they're an exact multiple of the ialignment size on LLVM. This prevents
    both overalignment (e.g. remainder of 8 individual bytes on ARM
    would be aligned to 8 bytes instead of 4 if typed as int64) and
    underalignment (e.g. 32 bytes remainder of a record that needs to be
    aligned to 8 bytes would be aligned to 1 or 4 bytes if types as
    array of resp. bytes or longints)

git-svn-id: trunk@41444 -
This commit is contained in:
Jonas Maebe 2019-02-24 19:58:47 +00:00
parent bc77aad3d9
commit e829596750
1 changed files with 16 additions and 2 deletions
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18
compiler/llvm/llvmdef.pas
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@ -118,7 +118,8 @@ implementation
fmodule, fmodule,
symtable,symconst,symsym, symtable,symconst,symsym,
llvmsym,hlcgobj, llvmsym,hlcgobj,
defutil,blockutl,cgbase,paramgr; defutil,blockutl,cgbase,paramgr,
cpubase;
{****************************************************************** {******************************************************************
@ -923,6 +924,7 @@ implementation
retloc: pcgparalocation; retloc: pcgparalocation;
usedef: tdef; usedef: tdef;
valueext: tllvmvalueextension; valueext: tllvmvalueextension;
paraslots,
i: longint; i: longint;
sizeleft: asizeint; sizeleft: asizeint;
begin begin
@ -983,7 +985,19 @@ implementation
end end
end end
else else
retdeflist[i]:=retloc^.def; begin
if retloc^.def.typ<>floatdef then
begin
paraslots:=sizeleft div cgpara.Alignment;
if (paraslots>1) and
((paraslots*cgpara.Alignment)=sizeleft) then
retdeflist[i]:=carraydef.getreusable(cgsize_orddef(int_cgsize(cgpara.Alignment)),paraslots)
else
retdeflist[i]:=retloc^.def;
end
else
retdeflist[i]:=retloc^.def;
end;
inc(i); inc(i);
retloc:=retloc^.next; retloc:=retloc^.next;
until not assigned(retloc); until not assigned(retloc);