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* since extended values are represented as "array[1..10] of byte" in records

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for llvm in order to ensure that it doesn't allocate the ABI-specified
    size, we have to convert the resulting pointer to an array of 10 bytes
    into a pointer to extended when we subscript the record (like is already
    done for arrays)

git-svn-id: trunk@30720 -
This commit is contained in:
Jonas Maebe 2015-04-25 15:51:30 +00:00
parent b9138a1c90
commit 03a3136525
1 changed files with 7 additions and 5 deletions
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12
compiler/llvm/nllvmmem.pas
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@ -88,15 +88,17 @@ implementation
newbase:=hlcg.getaddressregister(current_asmdata.CurrAsmList,getpointerdef(llvmfielddef));
current_asmdata.CurrAsmList.concat(taillvm.getelementptr_reg_size_ref_size_const(newbase,getpointerdef(left.resultdef),location.reference,s32inttype,vs.llvmfieldnr,true));
reference_reset_base(location.reference,newbase,vs.offsetfromllvmfield,newalignment(location.reference.alignment,vs.fieldoffset));
{ in case of an 80 bits extended type, typecast from an array of 10
bytes (used because otherwise llvm will allocate the ABI-defined
size for extended, which is usually larger) into an extended }
if (llvmfielddef.typ=floatdef) and
(tfloatdef(llvmfielddef).floattype=s80real) then
hlcg.g_ptrtypecast_ref(current_asmdata.CurrAsmList,getpointerdef(getarraydef(u8inttype,10)),getpointerdef(s80floattype),location.reference);
{ if it doesn't match the requested field exactly (variant record),
adjust the type of the pointer }
if (vs.offsetfromllvmfield<>0) or
(llvmfielddef<>resultdef) then
begin
newbase:=hlcg.getaddressregister(current_asmdata.CurrAsmList,getpointerdef(resultdef));
hlcg.a_load_reg_reg(current_asmdata.CurrAsmList,getpointerdef(llvmfielddef),getpointerdef(resultdef),location.reference.base,newbase);
location.reference.base:=newbase;
end;
hlcg.g_ptrtypecast_ref(current_asmdata.CurrAsmList,getpointerdef(llvmfielddef),getpointerdef(resultdef),location.reference);
location.size:=def_cgsize(resultdef);
result:=true;
end;