https://bugs.llvm.org/show_bug.cgi?id=51097
Bug ID: 51097
Summary: GVN crashes (possible cache bug)
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: unassignedb...@nondot.org
Reporter: jdoerf...@anl.gov
CC: lebedev...@gmail.com, llvm-bugs@lists.llvm.org,
wmo...@mit.edu
Created attachment 25025
--> https://bugs.llvm.org/attachment.cgi?id=25025&action=edit
dominance issue (reduced, still large)
The two attachments crash with different errors after gvn.
One is reduced by llvm-reduce from the other. Manually trimming
some otherwise trivial control flow, e.g. the following empty
diamond:
A: br undef, B, C,
B: br J
C: br J
J: br ...
will hide the bug.
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