[llvm-bugs] [Bug 35723] New: Expect TermInst on constantint or blockaddress to be folded

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=35723

            Bug ID: 35723
           Summary: Expect TermInst on constantint or blockaddress to be
                    folded
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: ruttenberg at reservoir.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 19587
  --> https://bugs.llvm.org/attachment.cgi?id=19587&action=edit
Reproducer

The attached pogram gets an assertion failure when compiled with -O > 0.  This
is a new bug since the May 2017 trunk.  The program is doing vary common stuff,
so I think this is an important bug.

$ ../llvm-targets/bin/clang -O1 -S x.c
clang-6.0:
/home/ruttenberg/reservoir/px/llvm/llvm/lib/Transforms/Scalar/SCCP.cpp:1933:
bool runIPSCCP(llvm::Module&, const llvm::DataLayout&, const
llvm::TargetLibraryInfo*): Assertion `Folded && "Expect TermInst on constantint
or blockaddress to be folded"' failed.

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