[all-commits] [llvm/llvm-project] d7cd42: [LoongArch] Implement mayBeEmittedAsTailCall for t...

[wanglei via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d7cd42192216939b29a06093be7b296050856d7a
      https://github.com/llvm/llvm-project/commit/d7cd42192216939b29a06093be7b296050856d7a
  Author: wanglei <wanglei at loongson.cn>
  Date:   2023-01-12 (Thu, 12 Jan 2023)

  Changed paths:
    M llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
    M llvm/lib/Target/LoongArch/LoongArchISelLowering.h
    M llvm/test/CodeGen/LoongArch/bnez-beqz.ll
    A llvm/test/CodeGen/LoongArch/duplicate-returns-for-tailcall.ll

  Log Message:
  -----------
  [LoongArch] Implement mayBeEmittedAsTailCall for tail call optimization

Implements TargetLowering callback `mayBeEmittedAsTailCall` that enables
CodeGenPrepare to duplicate returns when they might enable a tail-call.

Reviewed By: xen0n, MaskRay

Differential Revision: https://reviews.llvm.org/D141257