https://bugs.llvm.org/show_bug.cgi?id=48362
Bug ID: 48362
Summary: opt -jump-threading hangs
Product: new-bugs
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: mikael.hol...@ericsson.com
CC: htmldevelo...@gmail.com, llvm-bugs@lists.llvm.org
Created attachment 24227
--> https://bugs.llvm.org/attachment.cgi?id=24227&action=edit
bbi-50589_reduced.ll reproducer
Reproduce with:
opt -o - bbi-50589_reduced.ll -S -jump-threading
It doesn't seem to terminate.
This starts happening after 5486e00dc3e3:
[InstSimplify] remove poison-unsafe insertelement of undef value
PR45481:
https://bugs.llvm.org/show_bug.cgi?id=45481
SDAG has an identical transform to this, so there's little
chance of any real-world impact. OTOH, that means we are
effectively sweeping the bug out of sight because poison
exists in codegen too.
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