[all-commits] [llvm/llvm-project] bc747c: [SystemZ][z/OS] Fix incorrect codegen for ADA_ENTR...

[tltao via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bc747c3e1377e3e262d901cefcae2f563c895bb5
      https://github.com/llvm/llvm-project/commit/bc747c3e1377e3e262d901cefcae2f563c895bb5
  Author: tltao <tony.le.tao at gmail.com>
  Date:   2024-08-01 (Thu, 01 Aug 2024)

  Changed paths:
    M llvm/lib/Target/SystemZ/SystemZAsmPrinter.cpp
    M llvm/lib/Target/SystemZ/SystemZInstrInfo.td
    A llvm/test/CodeGen/SystemZ/Large/large-ada-01.py
    A llvm/test/CodeGen/SystemZ/Large/large-ada-02.py

  Log Message:
  -----------
  [SystemZ][z/OS] Fix incorrect codegen for ADA_ENTRY pseudo instruction (#101415)

The current MCInstBuilder for generating an ALGFI when loading something
from the ADA is incorrect and will crash the compiler.

r0 must also be excluded from the registers returned as the result,
since it is treated as the value "0" on z/OS.

Also add some tests to properly test the paths where LLILF and ALGFI are
generated.

---------

Co-authored-by: Tony Tao <tonytao at ca.ibm.com>



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