llvm-project

f977cd24 - [InstCombine] Use `isa<ConstantPointerNull>` for null pointer checks (#197722)

[InstCombine] Use `isa<ConstantPointerNull>` for null pointer checks (#197722) Make InstCombine pointer-null checks use `isa<ConstantPointerNull>` rather than generic zero checks, and fold inttoptr comparisons against the DataLayout null pointer value.