This reverts commit 03f57199.

We can't hide getFormattingLangOpts() as it's used by other tools.

There are a couple of open questions on what we should do for A14, so I'll
leave that off for now.

https://github.com/llvm/llvm-project/pull/81325#issuecomment-1937489565

Expand64BitShift was always dropping to generic shift legalization if the shift amount type was larger than i64, even if the constant shift amount was actually very small. I've adjusted the constant bounds checks to work with APInt types so we can always perform the comparison.

This results in the MVE long shift instructions being used more often, and it looks like this is preventing some additional combines from happening. This could be addressed in the future.

This came about while I was trying to extend the DAGTypeLegalizer::ExpandShift* helpers and need to move to consistently using the legal shift amount types instead of reusing the shift amount type from the original wider shift.

This patch makes all bit-fields in `DefaultedFunctionKind` of type `unsigned`, which brings `sizeof(DefaultedFunctionKind)` down from 8 to 4 when compiling Clang for Microsoft ABI.

This effectively reverts commit
9ff0cc7e

. For some reason "git revert"
lead to "no changes" after fixing conflicts, so a clean revert was not
possible.

The original issue (#57022) is no longer reproducible even with this
patch, so we can remove the suppression.

This is in line with our goal to make -Wenum-constexpr-conversion a
non-downgradeable error, see #59036.

Co-authored-by: Carlos Gálvez <carlos.galvez@zenseact.com>

Make all bit-fields of type `unsigned`, which reduces amoung of padding on Microsoft ABI, resulting in potentially lesser size of the object.

Make them all of the same `unsigned` type, which brings `sizeof(RawComment)` down from 12 to 4 when compiling Clang for Microsoft ABI.

The arithmetic and comparison operators are ill-formed when R1 or R2 is
not a std::ratio.

Fixes: https://github.com/llvm/llvm-project/issues/63753

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

I believe these should be selectable via tablegen patterns nowadays.

This helps the fp reductions, moving the constant operands to the RHS
which in turn helps simplify away fadd -0.0 and fmul 1.0.

First step in fixing #76772.

This PR considers the default branch as a case branch. This will give
the unreachable default branch fair consideration.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

This helps debuggers to display values in bit-fields in a more helpful way.

`RawRetainCountConversion` bit-field requires a new enumerator in `RetainCountConventionKind` to be annotated.