[PATCH] D20220: [PEI, AArch64] Use empty spaces in stack area for local stack slot allocation.

[Geoff Berry via llvm-commits]

gberry created this revision.
gberry added reviewers: t.p.northover, qcolombet, MatzeB.
gberry added subscribers: llvm-commits, mcrosier, rengolin.
Herald added a subscriber: aemerson.

If the target requests it, use emptry spaces in the fixed and
callee-save stack area to allocate local stack objects.

AArch64: Change last callee-save reg stack object alignment instead of
size to leave a gap to take advantage of above change.

http://reviews.llvm.org/D20220

Files:
  include/llvm/Target/TargetFrameLowering.h
  lib/CodeGen/PrologEpilogInserter.cpp
  lib/Target/AArch64/AArch64FrameLowering.cpp
  lib/Target/AArch64/AArch64FrameLowering.h
  lib/Target/AArch64/AArch64MachineFunctionInfo.h
  test/CodeGen/AArch64/aarch64-dynamic-stack-layout.ll
  test/CodeGen/AArch64/arm64-hello.ll

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