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[clang][bytecode] Fix ia32_addcarry/subborrow (#137642)

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RHS is followed by another Pointer.
This commit is contained in:
Timm Baeder
2025-04-28 17:44:19 +02:00
committed by GitHub
parent d7e631c7cd
commit c52fdbe697
1 changed files with 11 additions and 9 deletions
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20
clang/lib/AST/ByteCode/InterpBuiltin.cpp
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@@ -1413,6 +1413,7 @@ static bool interp__builtin_ia32_pext(InterpState &S, CodePtr OpPC,
return true;
}
/// (CarryIn, LHS, RHS, Result)
static bool interp__builtin_ia32_addcarry_subborrow(InterpState &S,
CodePtr OpPC,
const InterpFrame *Frame,
@@ -1423,16 +1424,17 @@ static bool interp__builtin_ia32_addcarry_subborrow(InterpState &S,
!Call->getArg(2)->getType()->isIntegerType())
return false;
APSInt CarryIn = peekToAPSInt(
S.Stk, *S.getContext().classify(Call->getArg(0)),
align(primSize(*S.getContext().classify(Call->getArg(2)))) +
align(primSize(*S.getContext().classify(Call->getArg(1)))) +
align(primSize(*S.getContext().classify(Call->getArg(0)))));
PrimType CarryInT = *S.getContext().classify(Call->getArg(0));
PrimType LHST = *S.getContext().classify(Call->getArg(1));
PrimType RHST = *S.getContext().classify(Call->getArg(2));
unsigned PtrSize = align(primSize(PT_Ptr));
APSInt CarryIn =
peekToAPSInt(S.Stk, CarryInT,
PtrSize + align(primSize(RHST)) + align(primSize(LHST)) +
align(primSize(CarryInT)));
APSInt LHS = peekToAPSInt(
S.Stk, *S.getContext().classify(Call->getArg(1)),
align(primSize(*S.getContext().classify(Call->getArg(2)))) +
align(primSize(*S.getContext().classify(Call->getArg(1)))));
APSInt RHS = peekToAPSInt(S.Stk, *S.getContext().classify(Call->getArg(2)));
S.Stk, LHST, PtrSize + align(primSize(RHST)) + align(primSize(LHST)));
APSInt RHS = peekToAPSInt(S.Stk, RHST, PtrSize + align(primSize(RHST)));
bool IsAdd = BuiltinOp == clang::X86::BI__builtin_ia32_addcarryx_u32 ||
BuiltinOp == clang::X86::BI__builtin_ia32_addcarryx_u64;