[all-commits] [llvm/llvm-project] 6fb7cd: [X86] Recognize POP/ADD/SUB modifying rsp in getSP...

[Daniel Zabawa via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6fb7cdff3d90c565b87a253ff7dbd36319879111
      https://github.com/llvm/llvm-project/commit/6fb7cdff3d90c565b87a253ff7dbd36319879111
  Author: Daniel Zabawa <daniel.zabawa at intel.com>
  Date:   2024-11-14 (Thu, 14 Nov 2024)

  Changed paths:
    M llvm/lib/Target/X86/X86InstrInfo.cpp
    M llvm/lib/Target/X86/X86MachineFunctionInfo.cpp
    M llvm/lib/Target/X86/X86MachineFunctionInfo.h
    A llvm/test/CodeGen/X86/pr114265.mir

  Log Message:
  -----------
  [X86] Recognize POP/ADD/SUB modifying rsp in getSPAdjust. (#114265)

This code assumed only PUSHes would appear in call sequences. However,
if calls require frame-pointer/base-pointer spills, only the PUSH
operations inserted by spillFPBP will be recognized, and the adjustments
to frame object offsets in prologepilog will be incorrect.

This change correctly reports the SP adjustment for POP and ADD/SUB to
rsp, and an assertion for unrecognized instructions that modify rsp.



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