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[JumpThreading] compilation hang with -jump-threading-across-loop-headers #42851

Open Quuxplusone opened 4 years ago

Quuxplusone commented 4 years ago
Bugzilla Link PR43881
Status NEW
Importance P enhancement
Reported by Jonas Paulsson (paulsson@linux.vnet.ibm.com)
Reported on 2019-11-02 05:09:50 -0700
Last modified on 2019-11-02 05:10:07 -0700
Version trunk
Hardware PC Linux
CC llvm-bugs@lists.llvm.org, paulsson@linux.vnet.ibm.com
Fixed by commit(s)
Attachments tc_jumphtreadloopheaders.bc (4076 bytes, application/octet-stream)
Blocks
Blocked by
See also 
Created attachment 22764
reduced testcase

clang -cc1 -triple s390x-ibm-linux -S -O3 -w -mllvm -jump-threading-across-loop-
headers -o - -x ir tc_jumphtreadloopheaders.bc -emit-llvm
Quuxplusone commented 4 years ago

Attached tc_jumphtreadloopheaders.bc (4076 bytes, application/octet-stream): reduced testcase