[PATCH] D149315: [ARM] Don't allocate memory if free space in segmented stack is just enough.

[Zhiyao Ma via Phabricator via llvm-commits]

ZhiyaoMa98 created this revision.
ZhiyaoMa98 added reviewers: john.brawn, efriedma.
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Assuming that the stack grows downwards, it is fine if the stack pointer is exactly at the stacklet boundary. We should use less-or-equal condition when deciding whether to skip new memory allocation.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D149315

Files:
  llvm/lib/Target/ARM/ARMFrameLowering.cpp
  llvm/test/CodeGen/ARM/debug-segmented-stacks.ll
  llvm/test/CodeGen/ARM/segmented-stacks-dynamic.ll
  llvm/test/CodeGen/ARM/segmented-stacks.ll
  llvm/test/CodeGen/Thumb/segmented-stacks-dynamic.ll
  llvm/test/CodeGen/Thumb/segmented-stacks.ll
  llvm/test/CodeGen/Thumb2/segmented-stacks.ll

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