https://llvm.org/bugs/show_bug.cgi?id=28521
Bug ID: 28521
Summary: LLVM bug or sth else?
Product: libraries
Version: 3.8
Hardware: Other
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: ARM
Assignee: unassignedb...@nondot.org
Reporter: tulip...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Created attachment 16728
--> https://llvm.org/bugs/attachment.cgi?id=16728&action=edit
Function dump and full assembly files
I've got a problem with a piece of LLVM generated code (from Rust) that crashes
with a SIGILL on my ARM Linux system (it's about memory and not unsupported
instructions) and I'm not sure if it's reasonable to blame llvm codegen.
The crashing code comes from using the `-Z orbit` option and it runs fine when
compiled without.
It gets interesting because the crash doesn't reproduce under valgrind or qemu.
I'm attaching assembly dumps of the function from the crashing/working
versions, the main difference in short:
str r0, [r0, r8]!
vs
str r1, [r0, r8]!
Any ideas welcome, thanks!
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