[PATCH] D87061: Handle masked loads and stores in MemoryLocation/Dependence

[Florian Hahn via Phabricator via llvm-commits]

fhahn added a comment.

I think this introduces the following crash when running `opt -gvn` on the IR below

  Assertion failed: (isa<X>(Val) && "cast<Ty>() argument of incompatible type!"), function cast, file /llvm-project/llvm/include/llvm/Support/Casting.h, line 269.
  PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace.
  Stack dump:
  0.	Program arguments:  bin/opt -gvn bugpoint-reduced-simplified.ll
  1.	Running pass 'Function Pass Manager' on module 'bugpoint-reduced-simplified.ll'.
  2.	Running pass 'Global Value Numbering' on function '@test'
  0  opt                      0x000000010d35b688 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) + 40
  1  opt                      0x000000010d35a438 llvm::sys::RunSignalHandlers() + 248
  2  opt                      0x000000010d35bc76 SignalHandler(int) + 262
  3  libsystem_platform.dylib 0x00007fff6d8fd5fd _sigtramp + 29
  4  libsystem_platform.dylib 000000000000000000 _sigtramp + 18446603338678020640
  5  libsystem_c.dylib        0x00007fff6d7d3808 abort + 120
  6  libsystem_c.dylib        0x00007fff6d7d2ac6 err + 0
  7  opt                      0x000000010e6da773 llvm::GVN::ValueTable::lookupOrAddCall(llvm::CallInst*) (.cold.7) + 35
  8  opt                      0x000000010d031435 llvm::GVN::ValueTable::lookupOrAddCall(llvm::CallInst*) + 3381
  9  opt                      0x000000010d02f3c0 llvm::GVN::ValueTable::lookupOrAdd(llvm::Value*) + 896
  10 opt                      0x000000010d03aeb7 llvm::GVN::processInstruction(llvm::Instruction*) + 695
  11 opt                      0x000000010d03c044 llvm::GVN::processBlock(llvm::BasicBlock*) + 564
  12 opt                      0x000000010d03b750 llvm::GVN::iterateOnFunction(llvm::Function&) + 112
  13 opt                      0x000000010d0329ab llvm::GVN::runImpl(llvm::Function&, llvm::AssumptionC



  @file_mask = external global [8 x i64], align 32
  
  define dso_local fastcc void @test() unnamed_addr #0 {
  entry:
    %wide.masked.load.1.i = tail call <4 x i64> @llvm.masked.load.v4i64.p0v4i64(<4 x i64>* nonnull bitcast (i64* getelementptr inbounds ([8 x i64], [8 x i64]* @file_mask, i64 0, i64 7) to <4 x i64>*), i32 8, <4 x i1> <i1 true, i1 false, i1 false, i1 false>, <4 x i64> undef) #2
    %.pre392.i = load i64, i64* getelementptr inbounds ([8 x i64], [8 x i64]* @file_mask, i64 0, i64 7), align 8
    %or156.4.i = or i64 %.pre392.i, undef
    %wide.masked.load614.1.i = tail call <4 x i64> @llvm.masked.load.v4i64.p0v4i64(<4 x i64>* nonnull bitcast (i64* getelementptr inbounds ([8 x i64], [8 x i64]* @file_mask, i64 0, i64 7) to <4 x i64>*), i32 8, <4 x i1> <i1 true, i1 false, i1 false, i1 false>, <4 x i64> undef) #2
    unreachable
  }
  
  ; Function Attrs: argmemonly nounwind readonly willreturn
  declare <4 x i64> @llvm.masked.load.v4i64.p0v4i64(<4 x i64>*, i32 immarg, <4 x i1>, <4 x i64>)


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  https://reviews.llvm.org/D87061/new/

https://reviews.llvm.org/D87061