[all-commits] [llvm/llvm-project] 1feeec: [AArch64][GlobalISel] Make G_SEXT_INREG legal and ...

[AE via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 1feeecf224c6f5a62c284e1547866712f643a976
      https://github.com/llvm/llvm-project/commit/1feeecf224c6f5a62c284e1547866712f643a976
  Author: Amara Emerson <aemerson at apple.com>
  Date:   2020-06-19 (Fri, 19 Jun 2020)

  Changed paths:
    M llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp
    M llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-div.mir
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-ext.mir
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-itofp.mir
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-ptr-add.mir
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-rem.mir
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-sext.mir
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-shift.mir
    M llvm/test/CodeGen/AArch64/GlobalISel/legalize-undef.mir

  Log Message:
  -----------
  [AArch64][GlobalISel] Make G_SEXT_INREG legal and add selection support.

We were defaulting to the lower action for this, resulting in SHL+ASHR
sequences. On AArch64 we can do this in one instruction for an arbitrary
extension using SBFM as we do for G_SEXT.

Differential Revision: https://reviews.llvm.org/D81992