================
@@ -2105,6 +2111,81 @@ static bool isOneByteCharacterType(QualType T) {
return T->isCharType() || T->isChar8Type();
}
+static bool interp__builtin_load8(InterpState &S, CodePtr OpPC,
+ const InterpFrame *Frame,
+ const CallExpr *Call, bool IsBigEndian,
+ bool IsAligned) {
+ Pointer Ptr = S.Stk.pop<Pointer>();
+
+ if (Ptr.isZero()) {
+ S.FFDiag(S.Current->getSource(OpPC), diag::note_constexpr_access_null)
+ << AK_Read;
+ return false;
+ }
+
+ if (!isReadable(Ptr) && !Ptr.isOnePastEnd())
+ return false;
+
+ if (IsAligned) {
+ CharUnits RequiredAlign =
+ S.getASTContext().getTypeAlignInChars(Call->getType());
+ CharUnits BaseAlignment =
+ getBaseAlignment(S.getASTContext(), getLValueBase(Ptr));
+ CharUnits PtrOffset = Ptr.toAPValue(S.getASTContext()).getLValueOffset();
----------------
tbaederr wrote:
You should not convert a pointer to an APValue unless absolutely necessary.
`Pointer::computeLayoutOffset()` should work here.
https://github.com/llvm/llvm-project/pull/203666
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