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opt crash - Illegal Instruction #1239

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llvmbot opened this issue Aug 3, 2006 · 3 comments
Closed

opt crash - Illegal Instruction #1239

llvmbot opened this issue Aug 3, 2006 · 3 comments
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@llvmbot
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llvmbot commented Aug 3, 2006

Bugzilla Link 867
Resolution FIXED
Resolved on Feb 22, 2010 12:51
Version trunk
OS MacOS X
Attachments test case
Reporter LLVM Bugzilla Contributor

Extended Description

Bugpoint produced this while trying to reduce test case for

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00000010
0x035ce798 in llvm::isInstructionTriviallyDead (I=0xcb0e0e0) at Local.cpp:328
328 if (!I->mayWriteToMemory()) return true;

I am not sure this smaller test cause produces same crash or not. But in any case it causes Illegal
Instruction

$ opt lgc.bc -load-vn -gcse -simplifycfg
@lattner
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lattner commented Aug 3, 2006

verified, I'll take a look

@lattner
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lattner commented Aug 4, 2006

Fixed.  Patch here:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20060731/036482.html

Testcase here:
Transforms/SimplifyCFG/2006-08-03-Crash.ll

-Chris

@lattner
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lattner commented Aug 4, 2006

*** Bug llvm/llvm-bugzilla-archive#868 has been marked as a duplicate of this bug. ***

@llvmbot llvmbot transferred this issue from llvm/llvm-bugzilla-archive Dec 3, 2021
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