* fix correct indentation in UOp pretty_print for repeated references
When a UOp was referenced multiple times, the walrus operator notation
(e.g., x0:=) was correctly used for the first occurrence, but subsequent
references had misaligned indentation due to an extra space character.
Fix indentation misalignment in pretty_print() when UOps are referenced
multiple times.
* add simple unit tests for UOp repr
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Co-authored-by: chenyu <chenyu@fastmail.com>
* write python emulator from RDNA3 psuedocode in pdf
* emu2
* more emu
* working
* more psueod
* progress
* cleanups
* delete junk
* delete stale files
* just emu
* work
* emu compare
* bemu
* cleanups and more failures
* revert bench emu
* fix emu cmp
* four tests fail
* bugfixes
* dsl
* ext
* refactor
* dsl
* div scale fix
* test_emu
* fix emu tests
* pcode
* test pcode
* top imports
* fix test_emu to use run_asm
* emu tests on real hardware
* more tests
* more emu tests
* more
* work
* work
* bug fix
* bugfixes
* fix fp16 gemm
* all ops tests pass in emulator
* fix llvm tests
* fix a few more tests
* fix mockgpu timeout
`UOp.render()` crashed with `IndexError: tuple index out of range` when
the UOp graph contained a `VECTORIZE` with empty `src=()`. This occurs
when reshaping to scalar shape `()`, e.g., `Tensor.ones(4).sum()`.
The bug was in the renderer's VECTORIZE pattern: `all_same(())` returns
`True` (vacuous truth), causing the code to access `x.src[0]` on an
empty tuple.
- Fix `IndexError` when calling `UOp.render()` on graphs containing
empty `VECTORIZE` nodes.
- Add test for empty `VECTORIZE` rendering.
* having fun with python asm dsl
* rdna3
* meh
* all in rdna3
* work
* more work
* work
* integration
* tests
* simpler
* simpler
* asm
* better
* simpler
* progress
* emu
* simpler
* emu
* tests
* types
* vopd
* cleaups
* work
* memory ranges
* add tracing
* refactors
* run_asm exit
* more readable
* compare to remu
* test gemm
* bug + stale
* more tests
* refactor
* tests fix
* more ins
* more instructions
* refactor
* faster
* match case
* match case
* simpler
* work
* tests
* run_asm
* work
* bug fixes
* more emu
* alu/emu
* refactor
* no pipeline emu yet
* alu direct
* fix
* bugfixes + new test
* fix exceptions in emulators
* update gen.py
* pylint
* no pdf
* improve bench_emu
* speedups
* cleanups
* more tests
* 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
