[all-commits] [llvm/llvm-project] 713496: [SystemZ/z/OS] Add XPLINK dynamic stack allocation

[Kai Nacke via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 713496d9c9088387f143c521d8f981bfe2be92ad
      https://github.com/llvm/llvm-project/commit/713496d9c9088387f143c521d8f981bfe2be92ad
  Author: Kai Nacke <kai.nacke at de.ibm.com>
  Date:   2022-02-14 (Mon, 14 Feb 2022)

  Changed paths:
    M llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
    M llvm/lib/Target/SystemZ/SystemZISelLowering.h
    M llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp
    M llvm/test/CodeGen/SystemZ/zos-prologue-epilog.ll

  Log Message:
  -----------
  [SystemZ/z/OS] Add XPLINK dynamic stack allocation

With XPLINK, dynamic stack allocations requires calling
a runtime function, which allocates the stack memory,
moves the register save area, and returns the new
stack pointer.

Reviewed By: uweigand

Differential Revision: https://reviews.llvm.org/D119732