[all-commits] [llvm/llvm-project] c31217: StackProtector: Use RuntimeLibcalls to query libca...

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/stack-protector/use-runtime-libcalls-for-libcall-names
  Home:   https://github.com/llvm/llvm-project
  Commit: c312171fab37ce55ceed897d12b2b4217eda604e
      https://github.com/llvm/llvm-project/commit/c312171fab37ce55ceed897d12b2b4217eda604e
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2025-07-15 (Tue, 15 Jul 2025)

  Changed paths:
    M llvm/include/llvm/IR/RuntimeLibcalls.td
    M llvm/lib/CodeGen/StackProtector.cpp
    M llvm/lib/IR/RuntimeLibcalls.cpp
    A llvm/test/CodeGen/NVPTX/no-stack-protector-libcall-error.ll

  Log Message:
  -----------
  StackProtector: Use RuntimeLibcalls to query libcall names

The compiler should not introduce calls to arbitrary strings
that aren't defined in RuntimeLibcalls. Previously OpenBSD was
disabling the default __stack_chk_fail, but there was no record
of the alternative __stack_smash_handler function it emits instead.

This also avoids a random triple check in the pass.



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