[PATCH] D98884: [IR] Ignore bitcasts of function pointers which are only used as callees in callbase instruction

[David Zarzycki via Phabricator via llvm-commits]

davezarzycki added a comment.

I have an auto-bisecting cron job that has identified this change as a second-stage regression on Fedora 34 (x86-64). Basically llvm-tblgen crashes reliably:

  FAILED: lib/Target/X86/X86GenDAGISel.inc
  cd /tmp/_update_lc/t && /tmp/_update_lc/t/bin/llvm-tblgen -gen-dag-isel -I /home/dave/ro_s/lp/llvm/lib/Target/X86 -I/tmp/_update_lc/t/include -I/home/dave/ro_s/lp/llvm/include -I /home/dave/ro_s/lp/llvm/lib/Target -omit-comments /home/dave/ro_s/lp/llvm/lib/Target/X86/X86.td --write-if-changed -o lib/Target/X86/X86GenDAGISel.inc -d lib/Target/X86/X86GenDAGISel.inc.d
  PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace.
  Stack dump:
  0.  Program arguments: /tmp/_update_lc/t/bin/llvm-tblgen -gen-dag-isel -I /home/dave/ro_s/lp/llvm/lib/Target/X86 -I/tmp/_update_lc/t/include -I/home/dave/ro_s/lp/llvm/include -I /home/dave/ro_s/lp/llvm/lib/Target -omit-comments /home/dave/ro_s/lp/llvm/lib/Target/X86/X86.td --write-if-changed -o lib/Target/X86/X86GenDAGISel.inc -d lib/Target/X86/X86GenDAGISel.inc.d
  #0 0x000000000050b153 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/tmp/_update_lc/t/bin/llvm-tblgen+0x50b153)
  #1 0x00000000005094b2 llvm::sys::RunSignalHandlers() (/tmp/_update_lc/t/bin/llvm-tblgen+0x5094b2)
  #2 0x000000000050b4fa SignalHandler(int) Signals.cpp:0:0
  #3 0x00007ffff7fa6a00 __restore_rt sigaction.c:0:0
  #4 0x0000000000316a7d (/tmp/_update_lc/t/bin/llvm-tblgen+0x316a7d)

Is this issue known?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D98884/new/

https://reviews.llvm.org/D98884