[llvm-bugs] [Bug 43292] New: newgvn crashes: Assertion `Result && "Should have found memory class"' failed.

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=43292

            Bug ID: 43292
           Summary: newgvn crashes: Assertion `Result && "Should have
                    found memory class"' failed.
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: cszide at 163.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 22488
  --> https://bugs.llvm.org/attachment.cgi?id=22488&action=edit
bugpoint-reduced-simplified.ll

$clang -v
clang version 10.0.0 (trunk 371487)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build8/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.4.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.4.0
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64

$opt -loop-unswitch -newgvn bugpoint-reduced-simplified.ll
WARNING: You're attempting to print out a bitcode file.
This is inadvisable as it may cause display problems. If
you REALLY want to taste LLVM bitcode first-hand, you
can force output with the `-f' option.

opt:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/lib/Transforms/Scalar/NewGVN.cpp:1649:
{anonymous}::CongruenceClass* {anonymous}::NewGVN::getMemoryClass(const
llvm::MemoryAccess*) const: Assertion `Result && "Should have found memory
class"' failed.
Stack dump:
0.      Program arguments:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build8/bin/opt
bugpoint-reduced-simplified.ll -loop-unswitch -newgvn 
1.      Running pass 'Function Pass Manager' on module
'bugpoint-reduced-simplified.bc'.
2.      Running pass 'Global Value Numbering' on function '@c'
 #0 0x000055c11ba05dba llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build8/bin/opt+0x275bdba)
 #1 0x000055c11ba03a94 llvm::sys::RunSignalHandlers()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build8/bin/opt+0x2759a94)
 #2 0x000055c11ba03bd2 SignalHandler(int)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build8/bin/opt+0x2759bd2)
 #3 0x00007f771d6b6890 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)
 #4 0x00007f771c368e97 raise
/build/glibc-OTsEL5/glibc-2.27/signal/../sysdeps/unix/sysv/linux/raise.c:51:0
 #5 0x00007f771c36a801 abort /build/glibc-OTsEL5/glibc-2.27/stdlib/abort.c:81:0
 #6 0x00007f771c35a39a __assert_fail_base
/build/glibc-OTsEL5/glibc-2.27/assert/assert.c:89:0
 #7 0x00007f771c35a412 (/lib/x86_64-linux-gnu/libc.so.6+0x30412)
 #8 0x000055c119afc785
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build8/bin/opt+0x852785)
 #9 0x000055c11b8966fb (anonymous
namespace)::NewGVN::iterateTouchedInstructions()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build8/bin/opt+0x25ec6fb)
#10 0x000055c11b89c589 (anonymous namespace)::NewGVN::runGVN()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build8/bin/opt+0x25f2589)
#11 0x000055c11b89e38f (anonymous
namespace)::NewGVNLegacyPass::runOnFunction(llvm::Function&) (.part.1393)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build8/bin/opt+0x25f438f)
#12 0x000055c11b34c5d9 llvm::FPPassManager::runOnFunction(llvm::Function&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build8/bin/opt+0x20a25d9)
#13 0x000055c11b34c6d1 llvm::FPPassManager::runOnModule(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build8/bin/opt+0x20a26d1)
#14 0x000055c11b34b831 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build8/bin/opt+0x20a1831)
#15 0x000055c119b3738f main
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build8/bin/opt+0x88d38f)
#16 0x00007f771c34bb97 __libc_start_main
/build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:344:0
#17 0x000055c119bae87a _start
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build8/bin/opt+0x90487a)
Aborted (core dumped)

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