https://llvm.org/bugs/show_bug.cgi?id=28670
Bug ID: 28670
Summary: GVNHoist pass uses a large amount of memory and
appears to hang due to large increase in buildtime
Product: libraries
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Scalar Optimizations
Assignee: unassignedb...@nondot.org
Reporter: alina.sbir...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Created attachment 16795
--> https://llvm.org/bugs/attachment.cgi?id=16795&action=edit
Sample testcase
The recently added GVNHoist pass causes certain Halide tests to take forever
making Halide unusable.
More details on discussion: https://reviews.llvm.org/D22639
Adding a sample testcase generated by Halide.
Test using "opt -gvn-hoist gvnhoist_small.bc".
An even larger testcase can be found here:
https://drive.google.com/open?id=0B01oOnN8VyO8MnpIdlpBcmRybmc
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