https://llvm.org/bugs/show_bug.cgi?id=27157
Bug ID: 27157
Summary: opt -O3 crashes with debug-only=loop-unroll
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Scalar Optimizations
Assignee: unassignedb...@nondot.org
Reporter: pauls...@linux.vnet.ibm.com
CC: llvm-bugs@lists.llvm.org,
michael.v.zolotuk...@gmail.com
Classification: Unclassified
Created attachment 16139
--> https://llvm.org/bugs/attachment.cgi?id=16139&action=edit
opt input
For the supplied test case, the LoopUnroll pass crashes in DT->verifyDomTree()
if debug output is enabled. This causes the verifyDomTree() function to be
called.
if (DT && !CompletelyUnroll)
DT->recalculate(*L->getHeader()->getParent());
else
DEBUG(DT->verifyDomTree()); <<<<<<<<<<<<<<<<<<
bin/opt ./reg-stack.bc -O3 -mtriple=s390x-linux-gnu -mcpu=z13
-debug-only=loop-unroll
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