[PATCH] D77767: Prevent stack coloring functions whith setjmp / longjmp

[Diogo N. Sampaio via Phabricator via llvm-commits]

dnsampaio created this revision.
dnsampaio added reviewers: eli.friedman, thanm.
Herald added subscribers: llvm-commits, hiraditya.
Herald added a project: LLVM.

In the the given example, a stack slot pointer shared between
two objectes is altered between the cal of setjmp and longjmp.
This pointer is spilled, so it does not get correctly restored.

Change-Id: I60ec010844f2a24ce01ceccf12eb5eba5ab94abb


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D77767

Files:
  llvm/lib/CodeGen/StackColoring.cpp
  llvm/test/CodeGen/ARM/no-stack-coloring-with-double-return.mir

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