https://bugs.llvm.org/show_bug.cgi?id=36954
Bug ID: 36954
Summary: [GVNSink] Seg Fault after deep recursion in
lookupOrAdd()
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: unassignedb...@nondot.org
Reporter: pauls...@linux.vnet.ibm.com
CC: llvm-bugs@lists.llvm.org
Created attachment 20144
--> https://bugs.llvm.org/attachment.cgi?id=20144&action=edit
reduced testcase
bin/opt -mtriple=s390x-linux-gnu -mcpu=z13 ./tc_gvnsink.ll -S -o /dev/null -O3
-enable-gvn-sink
#255 0x000002aa1f364dea (anonymous
namespace)::ValueTable::lookupOrAdd(llvm::Value*) (bin/opt+0xe64dea)
Stack dump:
0. Program arguments: bin/opt -mtriple=s390x-linux-gnu -mcpu=z13
./tc_gvnsink.ll -S -o /dev/null -O3 -enable-gvn-sink
1. Running pass 'CallGraph Pass Manager' on module './tc_gvnsink.ll'.
2. Running pass 'Early GVN sinking of Expressions' on function '@2'
Segmentation fault
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