[llvm] [X86] SimplifyDemandedBitsForTargetNode - add handling for VPMADD52L/VPMADD52H (PR #155494)

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Wed Aug 27 04:00:08 PDT 2025

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XChy wrote:

> Building on this - please can you handle the vpmadd52(x,0,y) -> y fold in SimplifyDemandedBitsForTargetNode? If the lower 52bits of either multiplicand are known zero.

Sure, I will work on it after merging the knownbits patch.


https://github.com/llvm/llvm-project/pull/155494

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