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Wire VDMFMA virtual intrinsics into the kernel configuration pipeline so they are automatically selected for skinny GEMMs (M<=8). Add e2e tests verifying correctness on ROCM hardware. Key changes: - IREEGPUAttrs.cpp: Extend getVirtualIntrinsics to return VDMFMA intrinsics from compatible 16x16 MFMA base intrinsics - ConfigUtils.cpp: Derive VDMFMA candidates in getMmaScheduleFromProblem with M-size guard to prevent selection for large M - GPUPackToIntrinsics.cpp: Add MmaInterfaceAttr fallback for VirtualMMA in getPackedSizes - config_tile_and_fuse.mlir: Add skinny GEMM config selection tests - skinny_gemm_vdmfma.mlir: E2E ROCM correctness tests Signed-off-by: Eric Feng <Eric.Feng@amd.com>
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ci-extra: test_torch