* remove ExecItem and merge it with ScheduleItem
* less diff
* fix issues
* min diff
* don't change bufs in _lower
* min diff
* update
* revert
* fixes
* diff
* support custom UOp kernels
* no number
* multioutput works
* backward kernel runs
* move kernel class
* grad later
* work
* no tags in kernel graph
* test arange
* arange + contig
* delete comment
* split pm_cleanups
* update test_schedule
* shrink when we remove bufferize
* dont do shrink if shape is empty
* update tests
* remove *1 from metadata
* deal with the noop bufferize
* only noop on cvar
* cleanup
* fix if
* rename
* test_schedule independent of RANGEIFY flag
* comment for expectedFailure + test_cast_padded_view
* test_cast_padded_const works
* don't use full_shape it's fine
* add todos for the rest
* remove GroupOp.Meta and st_arg
* inline axis_arg
* only allow .buffer on reshapes (or the buffer)
* gate is the other way
* still want can_pad?
* use op_in_backward_slice_with_self
* .buffer is recursive
* lint
* pathlib there
* rtoposort is fast, can replace rangeify with this
* fast rangeify
* work
* fast rangeify works for mnist
* should work
* progress
* pad fix
* FAST
* tests passing
* don't delete those shape ops
* put in rangeify map
* ending ranges fix
* tests
* mstack/mselect no hacks
* move to indexing.py
* touch up tests + add comments
* disable failing test
* actually make the file readable
* failing
* error
* update test_clone_doesnt_dedup to use base
* new_flat_buffer passes
* fix test_reorder_expand
* remove the view stuff
* remove that test, we don't want this view const behavior
* test_setitem_becomes_subbuffer is good
* enable cleanup_dead_axes
* don't mess with user contig
* correct tag behavior
* double reshape isn't correct
* block on assign too
* skip messing with symbolic
* Fix tests
* disable RANGEIFY=2
* test w rangeify
* enable RANGEIFY=1 test_assign
* work
* rangeify=0 asserts this ast
* remove that
* beta test, it's correct though
* skip multi
* matches torch/np output
* memcopy without memcopy
* can remove this
* rangeify isn't silently wrong anymore
* diff cleanup
* use UOp toposort instead of global tags
* actual assert TestRangeifyAssign
* step
* work
* this isn't optimizing away now
* some todos
* test fusion schedule
* typo
* dedup idxs
* cleaner
* pre
* work
* diff
