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Tim Renouf
44e42cf0f2
Summary: Since the changes to introduce vec3 and vec5, INSERT_VECTOR for these sizes has been marked "expand", which made LegalizeDAG lower it to loads and stores via a stack slot. The code got optimized a bit later, but the now-unused stack slot was never deleted. This commit avoids that problem by custom lowering INSERT_SUBVECTOR into an EXTRACT_VECTOR_ELT and INSERT_VECTOR_ELT for each element in the subvector to insert. V2: Addressed review comments re test. Differential Revision: https://reviews.llvm.org/D63160 Change-Id: I9e3c13e36f68cfa3431bb9814851cc1f673274e1 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@365148 91177308-0d34-0410-b5e6-96231b3b80d8
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