aaron.ballman added inline comments.
================ Comment at: lib/Sema/SemaExpr.cpp:11067 + + // Do not diagnose 2 ^ 64, but allow special case (2 ^ 64) - 1. + if (SubLHS && SubRHS && (LeftSideValue != 2 || RightSideValue != 64)) ---------------- aaron.ballman wrote: > This comment explains what the code does, but not why it does it. Given that > we're adding special cases, I think more comments here explaining why this is > valuable would be appreciated. Thank you, the comments helped! But they also raised another question for me. What's special about 2^64? Why not (2^16) - 1 or other common power-of-two values? I would have expected 8, 16, 32, and 64 to be handled similarly. CHANGES SINCE LAST ACTION https://reviews.llvm.org/D66397/new/ https://reviews.llvm.org/D66397 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
