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* x86-64: sign/zero extend arguments only if it is an external call as

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FPC generated code follows the ABI
This commit is contained in:
florian 2021-08-23 00:20:48 +02:00
parent ef31e8c2ed
commit bab7dcece1
1 changed files with 5 additions and 2 deletions
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7
compiler/x86_64/cpupara.pas
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@ -57,7 +57,7 @@ unit cpupara;
systems,
globals,defutil,
symtable,symutil,
cpupi,
procinfo,cpupi,
cgx86,cgobj,cgcpu;
const
@ -1809,12 +1809,15 @@ unit cpupara;
be compatible with the system compiler clang
(which extends on the caller side).
Exception: if the call is not external, then we can follow the ABI as FPC
generated code follows the ABI
Not for LLVM, since there the zero/signext
attributes by definition only apply to the
caller side }
{$ifndef LLVM}
if not(target_info.system in systems_darwin) and
(side=calleeside) and
((side=calleeside) or (([po_weakexternal,po_external]*p.procoptions)=[])) and
(hp.paraloc[side].intsize in [1,2]) then
begin
paraloc^.def:=hp.paraloc[side].def