[PATCH] D32622: ARM: Compute MaxCallFrame size early

[Matthias Braun via Phabricator via llvm-commits]

MatzeB updated this revision to Diff 97317.
MatzeB added a reviewer: ab.
MatzeB added a comment.

I had GlobalISel disabled in my earlier tests (cmake cache from times when it wasn't enabled yet).

I had to change GlobalISel to call TLI->finalizeLowering() late in InstructionSelect instead of after IRTranslator. While most ADJCALLSTACK/CALL instructions are already visible after IRTranslator we may miss operations getting implemented by library calls later. It also seems to delay freezing the reserved registers + extra adjustments until after ISel is finished. This also matches the current SelectionDAG behavior.

+Reviewers Ahmed because of the finalizeLowering/freezeReg movement.


Repository:
  rL LLVM

https://reviews.llvm.org/D32622

Files:
  include/llvm/CodeGen/MachineFrameInfo.h
  lib/CodeGen/GlobalISel/IRTranslator.cpp
  lib/CodeGen/GlobalISel/InstructionSelect.cpp
  lib/CodeGen/MachineFrameInfo.cpp
  lib/CodeGen/PrologEpilogInserter.cpp
  lib/Target/ARM/ARMBaseRegisterInfo.cpp
  lib/Target/ARM/ARMISelLowering.cpp
  lib/Target/ARM/ARMISelLowering.h
  test/CodeGen/ARM/alloca-align.ll

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