[all-commits] [llvm/llvm-project] 96f265: [SandboxVec][LoadStoreVec] Support constant vector...

[Anshil Gandhi via All-commits]

  Branch: refs/heads/users/gandhi56/sandbox-vectorizer/load-store-vec/mixed-type-constant-vec
  Home:   https://github.com/llvm/llvm-project
  Commit: 96f265760f10d415c84461a1b6005965457264b9
      https://github.com/llvm/llvm-project/commit/96f265760f10d415c84461a1b6005965457264b9
  Author: Anshil Gandhi <gandhi21299 at gmail.com>
  Date:   2026-09-23 (Wed, 23 Sep 2026)

  Changed paths:
    M llvm/include/llvm/SandboxIR/Constant.h
    M llvm/include/llvm/SandboxIR/Type.h
    M llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/Passes/LoadStoreVec.h
    M llvm/include/llvm/Transforms/Vectorize/SandboxVectorizer/VecUtils.h
    M llvm/lib/SandboxIR/Constant.cpp
    M llvm/lib/Transforms/Vectorize/SandboxVectorizer/Passes/LoadStoreVec.cpp
    M llvm/test/Transforms/SandboxVectorizer/Passes/LoadStoreVec/load_store_vec.ll
    M llvm/test/Transforms/SandboxVectorizer/Passes/LoadStoreVec/load_store_vec_mixed_types.ll
    M llvm/unittests/SandboxIR/SandboxIRTest.cpp

  Log Message:
  -----------
  [SandboxVec][LoadStoreVec] Support constant vectors of mixed types

createConstantVector() previously packed the constant store operands
as-is, which only worked when every store had the same element type.
Take the lane type from VecUtils::getCombinedVectorTypeFor() instead and
reinterpret each constant's bits as that type, going through an integer
of matching width via ptrtoint/inttoptr/bitcast. Constants wider than a
lane (e.g. an i64 in an <N x i32>) are split across several lanes in
memory order. Bail out when a constant cannot be reinterpreted, such as
a non-integral pointer or a relocatable address that needs splitting.

Also flatten vector-typed ConstantPointerNull into per-lane nulls, and
bail out on the remaining vector constants such as poison rather than
packing them into the result.

Co-authored-by: Cursor <cursoragent at cursor.com>



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