search for: creduce_crash_testcase

In our fork of LLVM we often need to reduce a crash testcase for a specific assertion. After writing lots of "only give me this specific assertion" scripts like the above I decided to write a script that automates all this for me: <https://github.com/CTSRD-CHERI/clang/blob/master/utils/creduce_crash_testcase.py>. (It's called creduce_crash_test.py but it will actually use bugpoint -compile-custom if it detects that it is not a clang frontend crash). If you point the script at a clang crash reproducer .sh file it will infer the assertion message/llvm_unreachable/infinite loop (if it takes longer...

I'm not sure if this helps, but here it is in case it does. I typically use bugpoint in a way as to keep the actual failure that I'm after. For example, with the test case you've pasted, I was looking for a specific assert. So I used bugpoint this way: $ cat reduceme.sh #!/bin/bash llc -filetype=obj $1 2>&1 | grep 'Cannot lower calls with arbitrary operand bundles'