Files
clang-p2996/llvm/test/CodeGen/AMDGPU
Matt Arsenault e892705d74 GlobalISel: Do not change register types in lowerLoad
Adjusting the load register type is a widenScalar type action, not a
lowering. lowerLoad should be reserved for operations that change the
memory access size, such as unaligned load decomposition. With this
trying to adjust the register type, it was hard to avoid infinite
loops in the legalizer. Adds a bandaid to avoid regressing a few
AArch64 tests, but I'm not sure what the exact condition is and
there's probably a cleaner way to do this.

For AMDGPU this regresses handling of some cases for unaligned loads,
but the way this is currently working is a pretty ugly hack.
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+==============================================================================+
| How to organize the lit tests                                                |
+==============================================================================+

- If you write a test for matching a single DAG opcode or intrinsic, it should
  go in a file called {opcode_name,intrinsic_name}.ll (e.g. fadd.ll)

- If you write a test that matches several DAG opcodes and checks for a single
  ISA instruction, then that test should go in a file called {ISA_name}.ll (e.g.
  bfi_int.ll

- For all other tests, use your best judgement for organizing tests and naming
  the files.

+==============================================================================+
| Naming conventions                                                           |
+==============================================================================+

- Use dash '-' and not underscore '_' to separate words in file names, unless
  the file is named after a DAG opcode or ISA instruction that has an
  underscore '_' in its name.