asb wrote: In case anyone was wondering how this is handled in SelectionDAG, I believe it's covered by CallLoweringInfo ultimately determining if an arg is sext/zext through CallBase::paramHasAttr, which does indeed check both the callsite and the called function (if it's a direct call of course). Indeed, I think you could just switch to using paramHasAttr in this patch and get the desired behaviour (which seems to be what ARMFastISel does in its `SelectCall` implementation).
Although this does fix a real bug, I'd strongly advise that a bug be filed against whatever code generated produced a call lacking the matching signext/zeroext attribute as the caller. I don't believe that in general LLVM is particularly well tested or robust against such inconsistencies, so it's likely to run into bugs. https://github.com/llvm/llvm-project/pull/77281 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
