write python emulator from RDNA3 psuedocode in pdf (#13841)

* 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

CLAUDE.md

@@ -79,7 +79,7 @@ VIZ=1 python -c "from tinygrad import Tensor; Tensor.ones(10).sum().realize()"
 
 ## Common Environment Variables
 
-- `DEBUG=1-4` - Increasing verbosity
+- `DEBUG=1-7` - Increasing verbosity (7 shows assembly output)
 - `VIZ=1` - Enable graph visualization
 - `SPEC=1` - Enable UOp spec verification
 - `NOOPT=1` - Disable optimizations
@@ -100,6 +100,14 @@ VIZ=1 python -c "from tinygrad import Tensor; Tensor.ones(10).sum().realize()"
 - Run tests before proposing commits
 - Test with `SPEC=2` when modifying UOp-related code
 
+## Auto-generated Files (DO NOT EDIT)
+
+The following files are auto-generated and should never be edited manually:
+- `extra/assembly/rdna3/autogen/gen_pcode.py` - Generated by `python -m extra.assembly.rdna3.pcode`
+- `extra/assembly/rdna3/autogen/__init__.py` - Generated from AMD ISA definitions
+
+To add missing instruction implementations, add them to `extra/assembly/rdna3/emu.py` instead.
+
 ## Style Notes
 
 - 2-space indentation, 150 char line limit