https://bugs.llvm.org/show_bug.cgi?id=44002
Bug ID: 44002
Summary: Segfault in X86TargetLowering::PerformDAGCombine
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Backend: X86
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected]
Created attachment 22813
--> https://bugs.llvm.org/attachment.cgi?id=22813&action=edit
reduced reproducer and run script
Hi there,
the x86 code generation of clang/LLVM crashed on my source code. I was using
LLVM 9.0 but could also reproduce the problem with llvm/trunk 375507.
I used C-Reduce [0] to obtain a minimal input file triggering the bug. Then I
used bugpoint as described in [1] to get a reduced/simplified bitcode which
kills llc.
Attached are files with the following:
* reduced source code
* script to reproduce the crash
* clang-9 stack dump
* clang-10 stack dump (llvm/trunk 375507)
* simplified llvm bit code which crashes llc
[0]: https://github.com/csmith-project/creduce
[1]: https://llvm.org/docs/HowToSubmitABug.html#code-generator-bugs
Best
Lennart
--
You are receiving this mail because:
You are on the CC list for the bug._______________________________________________
llvm-bugs mailing list
[email protected]
https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
