[PATCH] D122959: [ARM] Only update the successor edges for immediate predecessors of PrologueMBB.

[John Brawn via Phabricator via llvm-commits]

john.brawn added a comment.

In D122959#3475470 <https://reviews.llvm.org/D122959#3475470>, @ZhiyaoMa98 wrote:

> I would like to add a test, but I do not know how. My understanding is that I will need to create an example that PrologueMBB has non-immediate predecessors. Is there any example I can follow? Thanks!

It may be easiest to start with the original file they you saw the segfault. Adding "--emit llvm-ir" to the rustc command-line will cause a .ll file to be produced, then doing "bugpoint -run-llc file.ll" should hopefully reduce that down to a simple test case.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D122959/new/

https://reviews.llvm.org/D122959