[llvm-bugs] [Bug 40919] New: llvm::sroa::AllocaSliceRewriter::visitLoadInst assertion Non-byte-multiple bit width

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=40919

            Bug ID: 40919
           Summary: llvm::sroa::AllocaSliceRewriter::visitLoadInst
                    assertion Non-byte-multiple bit width
           Product: libraries
           Version: 8.0
          Hardware: All
                OS: All
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: andrew at ziglang.org
                CC: llvm-bugs at lists.llvm.org

Created attachment 21534
  --> https://bugs.llvm.org/attachment.cgi?id=21534&action=edit
sroa-crash.ll, gzipped

$ /store/local/llvm8-debug/bin/opt -O3 sroa-crash.ll |
/store/local/llvm8-debug/bin/llc 
opt: /store/dev/llvm-project/llvm/lib/Transforms/Scalar/SROA.cpp:2529: bool
llvm::sroa::AllocaSliceRewriter::visitLoadInst(llvm::LoadInst&): Assertion
`LI.getType()->getIntegerBitWidth() == DL.getTypeStoreSizeInBits(LI.getType())
&& "Non-byte-multiple bit width"' failed.
Stack dump:
0.      Program arguments: /store/local/llvm8-debug/bin/opt -O3 sroa-crash.ll 
1.      Running pass 'CallGraph Pass Manager' on module 'sroa-crash.ll'.
2.      Running pass 'SROA' on function '@testIntSerializerDeserializer'
 #0 0x0000000003caa7aa llvm::sys::PrintStackTrace(llvm::raw_ostream&)
/store/dev/llvm-project/llvm/lib/Support/Unix/Signals.inc:495:0
 #1 0x0000000003caa83d PrintStackTraceSignalHandler(void*)
/store/dev/llvm-project/llvm/lib/Support/Unix/Signals.inc:559:0
 #2 0x0000000003ca8719 llvm::sys::RunSignalHandlers()
/store/dev/llvm-project/llvm/lib/Support/Signals.cpp:69:0
 #3 0x0000000003caa26c SignalHandler(int)
/store/dev/llvm-project/llvm/lib/Support/Unix/Signals.inc:358:0
 #4 0x00007f6bcc355dd0 __restore_rt
(/nix/store/2kcrj1ksd2a14bm5sky182fv2xwfhfap-glibc-2.26-131/lib/libpthread.so.0+0x11dd0)
 #5 0x00007f6bcb0c1264 __GI_raise
(/nix/store/2kcrj1ksd2a14bm5sky182fv2xwfhfap-glibc-2.26-131/lib/libc.so.6+0x34264)
 #6 0x00007f6bcb0c2665 __GI_abort
(/nix/store/2kcrj1ksd2a14bm5sky182fv2xwfhfap-glibc-2.26-131/lib/libc.so.6+0x35665)
 #7 0x00007f6bcb0b9ce7 __assert_fail_base
(/nix/store/2kcrj1ksd2a14bm5sky182fv2xwfhfap-glibc-2.26-131/lib/libc.so.6+0x2cce7)
 #8 0x00007f6bcb0b9d92
(/nix/store/2kcrj1ksd2a14bm5sky182fv2xwfhfap-glibc-2.26-131/lib/libc.so.6+0x2cd92)
 #9 0x0000000003b21330
llvm::sroa::AllocaSliceRewriter::visitLoadInst(llvm::LoadInst&)
/store/dev/llvm-project/llvm/lib/Transforms/Scalar/SROA.cpp:2527:0
#10 0x0000000003b2c537 llvm::InstVisitor<llvm::sroa::AllocaSliceRewriter,
bool>::visitLoad(llvm::LoadInst&)
/store/dev/llvm-project/llvm/include/llvm/IR/Instruction.def:172:0
#11 0x0000000003b2915b llvm::InstVisitor<llvm::sroa::AllocaSliceRewriter,
bool>::visit(llvm::Instruction&)
/store/dev/llvm-project/llvm/include/llvm/IR/Instruction.def:172:0
#12 0x0000000003b26abf llvm::InstVisitor<llvm::sroa::AllocaSliceRewriter,
bool>::visit(llvm::Instruction*)
/store/dev/llvm-project/llvm/include/llvm/IR/InstVisitor.h:114:0
#13 0x0000000003b08d99 llvm::sroa::AllocaSliceRewriter::visit((anonymous
namespace)::Slice const*)
/store/dev/llvm-project/llvm/lib/Transforms/Scalar/SROA.cpp:2333:0
#14 0x0000000003b0db9a llvm::SROA::rewritePartition(llvm::AllocaInst&,
llvm::sroa::AllocaSlices&, llvm::sroa::Partition&)
/store/dev/llvm-project/llvm/lib/Transforms/Scalar/SROA.cpp:4130:0
#15 0x0000000003b0e4fb llvm::SROA::splitAlloca(llvm::AllocaInst&,
llvm::sroa::AllocaSlices&)
/store/dev/llvm-project/llvm/lib/Transforms/Scalar/SROA.cpp:4269:0
#16 0x0000000003b0f117 llvm::SROA::runOnAlloca(llvm::AllocaInst&)
/store/dev/llvm-project/llvm/lib/Transforms/Scalar/SROA.cpp:4420:0
#17 0x0000000003b0f7d9 llvm::SROA::runImpl(llvm::Function&,
llvm::DominatorTree&, llvm::AssumptionCache&)
/store/dev/llvm-project/llvm/lib/Transforms/Scalar/SROA.cpp:4513:0
#18 0x0000000003b25795
llvm::sroa::SROALegacyPass::runOnFunction(llvm::Function&)
/store/dev/llvm-project/llvm/lib/Transforms/Scalar/SROA.cpp:4570:0
#19 0x000000000343c716 llvm::FPPassManager::runOnFunction(llvm::Function&)
/store/dev/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1644:0
#20 0x0000000002b209ec (anonymous
namespace)::CGPassManager::RunPassOnSCC(llvm::Pass*, llvm::CallGraphSCC&,
llvm::CallGraph&, bool&, bool&)
/store/dev/llvm-project/llvm/lib/Analysis/CallGraphSCCPass.cpp:178:0
#21 0x0000000002b21978 (anonymous
namespace)::CGPassManager::RunAllPassesOnSCC(llvm::CallGraphSCC&,
llvm::CallGraph&, bool&)
/store/dev/llvm-project/llvm/lib/Analysis/CallGraphSCCPass.cpp:442:0
#22 0x0000000002b21c79 (anonymous
namespace)::CGPassManager::runOnModule(llvm::Module&)
/store/dev/llvm-project/llvm/lib/Analysis/CallGraphSCCPass.cpp:498:0
#23 0x000000000343cce6 (anonymous
namespace)::MPPassManager::runOnModule(llvm::Module&)
/store/dev/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1744:0
#24 0x000000000343d47e llvm::legacy::PassManagerImpl::run(llvm::Module&)
/store/dev/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1857:0
#25 0x000000000343d6ad llvm::legacy::PassManager::run(llvm::Module&)
/store/dev/llvm-project/llvm/lib/IR/LegacyPassManager.cpp:1889:0
#26 0x00000000015b8340 main
/store/dev/llvm-project/llvm/tools/opt/opt.cpp:835:0
#27 0x00007f6bcb0ae020 __libc_start_main
(/nix/store/2kcrj1ksd2a14bm5sky182fv2xwfhfap-glibc-2.26-131/lib/libc.so.6+0x21020)
#28 0x000000000157907a _start
/build/glibc-2.26/csu/../sysdeps/x86_64/start.S:122:0
        .text
        .file   "<stdin>"

        .section        ".note.GNU-stack","", at progbits
Aborted

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