https://bugs.llvm.org/show_bug.cgi?id=36501
Bug ID: 36501
Summary: [NewGVN] Assertion "Value number changed after main
loop completed!" failed
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Created attachment 19949
--> https://bugs.llvm.org/attachment.cgi?id=19949&action=edit
reduced testcase
bin/opt -mtriple=s390x-linux-gnu -mcpu=z13 tc_newgvn_aftermainloop.ll -o
out.opt -tbaa -loop-rotate -licm -loop-unswitch -simplifycfg -instcombine
-loop-unroll -newgvn
opt: /home/ijonpan/llvm/llvm-dev-2/lib/Transforms/Scalar/NewGVN.cpp:3285: void
{anonymous}::NewGVN::verifyIterationSettled(llvm::Function&): Assertion
`BeforeCC->isEquivalentTo(AfterCC) && "Value number changed after main loop
completed!"' failed.
#0 0x0000000002cb51e0 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(bin/opt+0x2cb51e0)
...
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