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[LLVMGPU] Legalize ND vectors to 1D vectors#23853

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Groverkss wants to merge 3 commits intoiree-org:mainfrom
Groverkss:legalize-nd-vectors
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[LLVMGPU] Legalize ND vectors to 1D vectors#23853
Groverkss wants to merge 3 commits intoiree-org:mainfrom
Groverkss:legalize-nd-vectors

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@Groverkss Groverkss commented Mar 19, 2026

Just testing if there are any regressions

ci-extra: test_torch

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Some notes on missing test coverage:

  • No pipeline tests for mxfp4 cdna4 matmuls. Only caught by e2e tests and not by LLVMGPU pipeline tests
  • No CUDA ld_matrix/mma.sync LLVMGPU pipeline tests

When I say pipeline, I mean we have nothing that tests if we lower correctly to nvvm/rocdl.

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