[eh] branchfolding inf recursion with EH enabled

[asl]

Bugzilla Link	1228
Resolution	FIXED
Resolved on	Feb 22, 2010 12:52
Version	trunk
OS	All
Blocks	#964
Attachments	Failed bytecode

Extended Description

Attached bytecode (probably) cycles and consumes all available memory.

Reproduce with:

ulimit -v 512000
llc -enable-eh locale.bc

[asl]

assigned to @lattner

[asl]

Err, not bytecode, but llc cycles :)

[llvmbot]

BranchFolding::OptimizeBlock recursing infinitely. Likely problem handling landing pad. This code is
currently evolving.

[llvmbot]

another testcase, from the Ada runtime

[asl]

Updated testcase
Bytecode is not valid anymore due to format change. Attaching source.

[lattner]

Fixed, patch here:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070430/048754.html

Testcase here:
CodeGen/Generic/2007-04-30-LandingPadBranchFolding.ll

-Chris

[llvmbot]

mentioned in issue #964