[PATCH] D99585: [X86] add dwarf information for loop stack probe

[YangKeao via Phabricator via llvm-commits]

YangKeao created this revision.
Herald added subscribers: pengfei, hiraditya.
YangKeao requested review of this revision.
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This patch only contains the implementation for 64-bit
architecture. Because `r11d` cannot be used in 32-bit
architecture and I don't know why (and in which step)
the r11d register is rewritten to work on 32-bit 😢, but it
doesn't cover dwarf annotation.

As discussed in D98789 <https://reviews.llvm.org/D98789>, we cannot find a register unconditionally
safe in 32-bit, so I left this problem for further discussion.
nagisa's D98999 <https://reviews.llvm.org/D98999> is an attemption to solve this problem.

Signed-off-by: YangKeao <keao.yang at yahoo.com>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D99585

Files:
  llvm/lib/Target/X86/X86FrameLowering.cpp
  llvm/lib/Target/X86/X86FrameLowering.h
  llvm/test/CodeGen/X86/stack-clash-large.ll

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