[all-commits] [llvm/llvm-project] c8bfed: Reland 7691790dfd1011d08f5468f63952d7690755aad4 wi...

[Krzysztof Parzyszek via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: c8bfed05e21f945b5ac71cd01d62e2854a8ddcf9
      https://github.com/llvm/llvm-project/commit/c8bfed05e21f945b5ac71cd01d62e2854a8ddcf9
  Author: Krzysztof Parzyszek <kparzysz at quicinc.com>
  Date:   2020-02-28 (Fri, 28 Feb 2020)

  Changed paths:
    M llvm/lib/Target/Hexagon/HexagonISelLowering.cpp
    M llvm/lib/Target/Hexagon/HexagonISelLowering.h
    M llvm/lib/Target/Hexagon/HexagonISelLoweringHVX.cpp
    M llvm/test/CodeGen/Hexagon/autohvx/isel-hvx-pred-bitcast.ll
    A llvm/test/CodeGen/Hexagon/autohvx/isel-store-bitcast-v128i1.ll
    M llvm/test/CodeGen/Hexagon/hvx-bitcast-v64i1.ll
    M llvm/test/CodeGen/Hexagon/store-vector-pred.ll

  Log Message:
  -----------
  Reland 7691790dfd1011d08f5468f63952d7690755aad4 with a MSAN fix

In some cases when HexagonTargetLowering::allowsMemoryAccess returned
true, it did not set the "Fast" argument, leaving it uninitialized.

[Hexagon] Improve casting of boolean HVX vectors to scalars

- Mark memory access for bool vectors as disallowed in target lowering.
  This will prevent combining bitcasts of bool vectors with stores.
- Replace the actual bitcasting code with a faster version.
- Handle casting of v16i1 to i16.