[PATCH] D137821: Handle register spill in BranchRelaxation pass

[Xiaodong Liu via Phabricator via llvm-commits]

XiaodongLoong created this revision.
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When the range of the unconditional branch is overflow, the indirect
branch way is used. The case when there is no scavenged register for
indirect branch needs to spill register to stack.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D137821

Files:
  llvm/lib/Target/LoongArch/LoongArchFrameLowering.cpp
  llvm/lib/Target/LoongArch/LoongArchInstrInfo.cpp
  llvm/lib/Target/LoongArch/LoongArchMachineFunctionInfo.h
  llvm/test/CodeGen/LoongArch/branch-relaxation-spill-32.ll
  llvm/test/CodeGen/LoongArch/branch-relaxation-spill-64.ll
  llvm/test/CodeGen/LoongArch/branch-relaxation.ll

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