LLC Produced executables randomly crash

[lattner]

Bugzilla Link	4
Resolution	FIXED
Resolved on	Feb 22, 2010 12:42
Version	trunk
OS	Linux
Depends On	llvm/llvm-bugzilla-archive#41

Extended Description

For an unknown reason, LLC produced executables randomly segfault. This does
not effect the JIT.

[llvmbot]

I am not seeing this behavior on x86 linux. Could you supply a testcase?

[llvmbot]

Assuming this was just a test bug. Moving right along...

[lattner]

This is not a test bug. See the nightly tester for examples. 254.gap is an
example that fairly consistently fails with LLC, but works fine with the JIT.

[llvmbot]

oh, ok. Submit a better bug report next time. :-P

[llvmbot]

chris says this happens mostly on fhourstones and gap

[llvmbot]

Confirmed, I am seeing this on fhourstones (llc build), about 30% of the time.

[llvmbot]

This may have to do with bug 41, which is currently being looked at.

[lattner]

One half of the fix:
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20031013/008071.html

[lattner]

The fix for Bug 41 seems to have fixed fhourstones, but GAP still fails with LLC
and not the JIT.

[lattner]

The nondeterminism seems gone for good, so I'm closing this bug. However, there
are still problems. sigh

[llvmbot]

mentioned in issue llvm/llvm-bugzilla-archive#5198

[llvmbot]

mentioned in issue llvm/llvm-bugzilla-archive#26723