…lvm#173849)

The masking rewrite in `foldBitCeil` assumes a power-of-two bitwidth.

For non-power-of-two integer types, `(-ctlz) & (BitWidth - 1)` is not
equivalent to `BitWidth - ctlz` and can miscompile.

This patch restricts the transform to power-of-two bitwidths. 

Alive2 proof: https://alive2.llvm.org/ce/z/i2E6zT

Fixes llvm#173787

…th `bool` operands in C23 (llvm#171070)

Closes [llvm#170596](llvm#170596)

---------

Co-authored-by: EugeneZelenko <eugene.zelenko@gmail.com>
Co-authored-by: Baranov Victor <bar.victor.2002@gmail.com>

…lvm#173815)

)

)

…73429)

This is already handled, but misses opportunities. Test cases
where the input is known positive or negative.

…vm#173056)

Co-authored-by: Kareem Ergawy <kareem.ergawy@amd.com>

…73430)

Teach exp handling that positive inputs cannot introduce overflow,
and negative inputs cannot introduce underflow.

…#173431)

Fixes an MSCV build issue after the C++20 fix in
llvm#169772. See the [failure
log](https://productionresultssa1.blob.core.windows.net/actions-results/604d315e-edbd-401f-9a85-9ec5fcbc4996/workflow-job-run-99b94847-47a4-5b95-9933-44db3e32a2a7/logs/job/job-logs.txt?rsct=text%2Fplain&se=2025-12-24T11%3A16%3A19Z&sig=3leOtxGMlJmAMzOCtakzD8%2FOQCXF2HfflooR%2Bm%2Bt7Ng%3D&ske=2025-12-24T21%3A53%3A06Z&skoid=ca7593d4-ee42-46cd-af88-8b886a2f84eb&sks=b&skt=2025-12-24T09%3A53%3A06Z&sktid=398a6654-997b-47e9-b12b-9515b896b4de&skv=2025-11-05&sp=r&spr=https&sr=b&st=2025-12-24T11%3A06%3A14Z&sv=2025-11-05)
in the IREE downstream project.

Making IsRandomAccess, IsBidirectional public ensures that they are
always accessible, avoiding the access-related SFINAE ambiguity that
causes different compilers to handle this differently.

The build is passing after this change:
https://github.com/iree-org/iree/actions/runs/20485132054/job/58865989220?pr=22979

…73432)

I'm working on optimizing out the tail sequences in the
implementations of the 4 different flavors of pow. These
include chains of selects on the various edge cases.

Related to llvm#64870