[all-commits] [llvm/llvm-project] 442f06: [AArch64AsmParser] Support (xxx), lsl 16 after #80571

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 442f066fc464e953b7783230e95ccf2a67ebfb38
      https://github.com/llvm/llvm-project/commit/442f066fc464e953b7783230e95ccf2a67ebfb38
  Author: Fangrui Song <i at maskray.me>
  Date:   2024-02-19 (Mon, 19 Feb 2024)

  Changed paths:
    M llvm/lib/Target/AArch64/AsmParser/AArch64AsmParser.cpp
    M llvm/test/MC/AArch64/arm64-optional-hash.s

  Log Message:
  -----------
  [AArch64AsmParser] Support (xxx), lsl 16 after #80571

An immediate integer operand not prefixed with # can also be followed
by "lsl". Parse "lsl".
In the wild, edk2 ArmPkg/Include/AsmMacroIoLibV8.h has
`movz      Reg, (Val) >> 16, lsl #16`.

Note: our support for paren expression not prefixed with # is not very
good. For example, `adds x3, x4, (1024>>0), lsl 12` fails to be parsed.



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