[PATCH] D45543: [globalisel] Add a combiner helpers for extending loads and use them in a pre-legalize combiner for AArch64

[Daniel Sanders via Phabricator via llvm-commits]

dsanders updated this revision to Diff 160708.
dsanders marked 14 inline comments as done.
dsanders added a comment.

Rebased

Fixed the various nits

Fixed a problem where the pass manager couldn't schedule 'Function Alias
Analysis Results' which was apparently required by 'AArch64 Instruction
Selection' according to the pass manager... except it wasn't. The actual problem
was that we weren't preserving the StackProtector pass.

I've also added preservation of the CFG analyses while I was fixing the pass
manager issue above.


Repository:
  rL LLVM

https://reviews.llvm.org/D45543

Files:
  include/llvm/CodeGen/GlobalISel/Combiner.h
  include/llvm/CodeGen/GlobalISel/CombinerHelper.h
  include/llvm/CodeGen/GlobalISel/CombinerInfo.h
  include/llvm/CodeGen/GlobalISel/MachineIRBuilder.h
  lib/CodeGen/GlobalISel/Combiner.cpp
  lib/CodeGen/GlobalISel/CombinerHelper.cpp
  lib/Target/AArch64/AArch64.h
  lib/Target/AArch64/AArch64PreLegalizerCombiner.cpp
  lib/Target/AArch64/AArch64TargetMachine.cpp
  lib/Target/AArch64/CMakeLists.txt
  test/CodeGen/AArch64/GlobalISel/arm64-fallback.ll
  test/CodeGen/AArch64/GlobalISel/gisel-commandline-option.ll
  test/CodeGen/AArch64/GlobalISel/prelegalizercombiner-extending-loads.mir
  test/CodeGen/AArch64/O0-pipeline.ll

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