[PATCH] D139378: Add noundef metadata to load instructions (preliminary 4 or 4)

[John McIver via Phabricator via cfe-commits]

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Add noundef attribute support when an rvalue is being stored into a vector/matrix lvalue.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D139378

Files:
  clang/lib/CodeGen/CGExpr.cpp
  clang/test/CodeGen/matrix-type-operators.c
  clang/test/CodeGenCXX/matrix-type-operators.cpp
  clang/test/CodeGenCXX/vector-noundef.cpp

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