[amdgpu] Part1 add codegen #6469
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Issue: taichi-dev#6434 ### Brief Summary This part contains `CHI IR->LLVM IR` part. Similar to part0, the skeleton of this part is similar to `cuda`. Some important notes are following. 1. `ocml` is the math library like 'libdevice' in `nvidia`. It provides most of the functions we need. Remains such as `sgn`, and `abs` have been completed by hand codes 2. The kernel parameter passing part is different from the `CUDA`. `extra_args` is the only way that could be accepted by `device kernel.` 3. still uses jargon from `nvidia`.(e.g. `sm`, `block` and `grid`) Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
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Issue: #6434
Brief Summary
This part contains
CHI IR->LLVM IRpart. Similar to part0, the skeleton of this part is similar tocuda. Some important notes are following.ocmlis the math library like 'libdevice' innvidia. It provides most of the functions we need. Remains such assgn, andabshave been completed by hand codesCUDA.extra_argsis the only way that could be accepted bydevice kernel.nvidia.(e.g.sm,blockandgrid)