================
@@ -3799,10 +3799,29 @@ bool Compiler<Emitter>::VisitOffsetOfExpr(const
OffsetOfExpr *E) {
continue;
}
+ if (IndexT == PT_IntAP || IndexT == PT_IntAPS) {
+ // AP types (e.g. __uint128_t, __int128) cannot be safely cast to
----------------
marlus wrote:
Done. Added CastNoOverflow in Opcodes.td (with a new APOnlyTypeClass covering
IntAP/IntAPS), implemented it in Interp.h (pops AP value, rejects if
isNegative() || getActiveBits() > 63, pushes as Sint64), and updated
Compiler.cpp to emit visit + CastNoOverflow for AP types. Small values like
(__uint128_t)1 now work correctly, and values that don't fit in int64_t fail
constant evaluation.
https://github.com/llvm/llvm-project/pull/204139
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