[all-commits] [llvm/llvm-project] 3f1def: [clang codegen] Clean up handling of vectors with ...

[Eli Friedman via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 3f1defa6e2dfdea2a5980083de2b04068f640023
      https://github.com/llvm/llvm-project/commit/3f1defa6e2dfdea2a5980083de2b04068f640023
  Author: Eli Friedman <efriedma at quicinc.com>
  Date:   2020-03-24 (Tue, 24 Mar 2020)

  Changed paths:
    M clang/lib/CodeGen/CGDecl.cpp
    M clang/test/CodeGenCXX/auto-var-init.cpp

  Log Message:
  -----------
  [clang codegen] Clean up handling of vectors with trivial-auto-var-init.

The code was pretending to be doing something useful with vectors, but
really it was doing nothing: the element type of a vector is always a
scalar type, so constWithPadding would always just return the input constant.

Split off from D75661 so it can be reviewed separately.

While I'm here, also add testcase to show missing vector handling.

Differential Revision: https://reviews.llvm.org/D76528