[all-commits] [llvm/llvm-project] 2876b3: [SelectionDAG] Always preserve offset in MachinePo...

[Eli Friedman via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 2876b3eef3881a2a6304afc34465c597ac31cec9
      https://github.com/llvm/llvm-project/commit/2876b3eef3881a2a6304afc34465c597ac31cec9
  Author: Eli Friedman <efriedma at quicinc.com>
  Date:   2020-04-14 (Tue, 14 Apr 2020)

  Changed paths:
    M llvm/include/llvm/CodeGen/MachineMemOperand.h
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-load-constant-32bit.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-load-constant.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-load-flat.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-load-global.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-load-local.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-load-private.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-sextload-constant-32bit.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-store-global.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-store.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-zextload-constant-32bit.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.amdgcn.s.buffer.load.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/regbankselect-amdgcn.s.buffer.load.ll
    M llvm/test/CodeGen/ARM/GlobalISel/arm-legalize-load-store.mir
    M llvm/test/CodeGen/PowerPC/aix-cc-abi.ll
    M llvm/test/CodeGen/X86/GlobalISel/legalize-memop-scalar-32.mir
    M llvm/test/CodeGen/X86/GlobalISel/legalize-undef.mir
    M llvm/unittests/CodeGen/GlobalISel/LegalizerTest.cpp

  Log Message:
  -----------
  [SelectionDAG] Always preserve offset in MachinePointerInfo

Previously, getWithOffset() would drop the offset if the base was null.
Because of this, MachineMemOperand would return the wrong result from
getAlign() in these cases.  MachineMemOperand stores the alignment of
the pointer without the offset.

A bunch of MIR tests changed because we print the offset now.

Split off from D77687.

Differential Revision: https://reviews.llvm.org/D78049