[all-commits] [llvm/llvm-project] 9544a3: A new option -print-on-crash that prints the IR as...

[jamieschmeiser via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9544a32287eccb42a4367cff9b5888855d6b8756
      https://github.com/llvm/llvm-project/commit/9544a32287eccb42a4367cff9b5888855d6b8756
  Author: Jamie Schmeiser <schmeise at ca.ibm.com>
  Date:   2021-03-23 (Tue, 23 Mar 2021)

  Changed paths:
    M llvm/include/llvm/Passes/StandardInstrumentations.h
    M llvm/lib/Passes/PassBuilder.cpp
    M llvm/lib/Passes/PassRegistry.def
    M llvm/lib/Passes/StandardInstrumentations.cpp
    A llvm/test/Other/print-on-crash.ll

  Log Message:
  -----------
  A new option -print-on-crash that prints the IR as it was upon entering the last pass when there is a crash.
Summary:
The IR is saved in its print form before each pass is started and a
signal handler is registered.  If the compilation crashes, the signal
handler will print the saved IR to dbgs().  This option
can be modified using -print-module-scope to get the IR for the complete
module.  Note that this option only works with the new pass manager.

Author: Jamie Schmeiser <schmeise at ca.ibm.com>
Reviewed By: aeubanks (Arthur Eubanks) yrouban (Yevgeny Rouban)
Differential Revision: https://reviews.llvm.org/D86657