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Add support for generating LLVM vector predication intrinsics. (#7111)
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Add support for generating llvm.vp.* intrinsics. This is particularly
useful for RISC V, but it may be a simpler, better optimized path, for
Halide vector operations in general.

Add support for a maximum vector size that might be larger than the
native vector size. RISC V vector LMUL support is an example of an
architecture supporting this.
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Zalman Stern committed Oct 25, 2022
1 parent 44102c0 commit 9163310
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