[LLVMdev] opt -O3 causes Assertion `New->getType() == getType() && "replaceAllUses of value with new value of different type!"' failed

[Hal Finkel]

Milind,

Have you filed a bug on this? If not, can you please open a bug report (http://llvm.org/bugs)?

 -Hal

----- Original Message -----
> I am hitting an LLVM assertion from the llc tool iff the bitcode file
> is optimized at -O3 level by opt). -O1 and -O2 levels of opt do not
> cause this assert.
> 
>  LLVM version 3.4svn
>   DEBUG build with assertions.
>   Built Jul 14 2013 (15:39:08).
>   Default target: x86_64-unknown-linux-gnu
>   Host CPU: amdfam10
> 
> 
> I have attached the input bc file before -O3 optimization
> :bzip2.del.bc.tgz
> I have attached the input bc file after -O3 optimization :
> bzip2.del.opt.bc.tgz
> 
> 
> Command to run on -O3 optimized file: llc -cppgen=program
> bzip2.del.opt.bc
> 
> Call stack:
> 
> llc: Value.cpp:307: void
> llvm::Value::replaceAllUsesWith(llvm::Value*): Assertion
> `New->getType() == getType() && "replaceAllUses of value with new
> value of different type!"' failed.
> 0  llc             0x00000000014c716a
> llvm::sys::PrintStackTrace(_IO_FILE*) + 38
> 1  llc             0x00000000014c73d1
> 2  llc             0x00000000014c7718
> 3  libpthread.so.0 0x000000333060eb10
> 4  libc.so.6       0x000000332fa30265 gsignal + 53
> 5  libc.so.6       0x000000332fa31d10 abort + 272
> 6  libc.so.6       0x000000332fa296e6 __assert_fail + 246
> 7  llc             0x00000000014702df
> llvm::Value::replaceAllUsesWith(llvm::Value*) + 173
> 8  llc             0x00000000006b91e3
> llvm::BitcodeReaderValueList::ResolveConstantForwardRefs() + 1127
> 9  llc             0x00000000006b9d97
> llvm::BitcodeReader::ParseConstants() + 339
> 10 llc             0x00000000006bc634
> llvm::BitcodeReader::ParseFunctionBody(llvm::Function*) + 594
> 11 llc             0x00000000006c2d63
> llvm::BitcodeReader::Materialize(llvm::GlobalValue*, std::string*) +
> 411
> 12 llc             0x00000000006c290d
> llvm::BitcodeReader::MaterializeModule(llvm::Module*, std::string*) +
> 195
> 13 llc             0x000000000144898e
> llvm::Module::MaterializeAll(std::string*) + 78
> 14 llc             0x00000000014489b7
> llvm::Module::MaterializeAllPermanently(std::string*) + 29
> 15 llc             0x00000000006c367b
> llvm::ParseBitcodeFile(llvm::MemoryBuffer*, llvm::LLVMContext&,
> std::string*) + 93
> 16 llc             0x0000000000679302
> llvm::ParseIR(llvm::MemoryBuffer*, llvm::SMDiagnostic&,
> llvm::LLVMContext&) + 214
> 17 llc             0x000000000067958a llvm::ParseIRFile(std::string
> const&, llvm::SMDiagnostic&, llvm::LLVMContext&) + 374
> 18 llc             0x00000000006680f4
> 19 llc             0x0000000000668fed main + 199
> 20 libc.so.6       0x000000332fa1d994 __libc_start_main + 244
> 21 llc             0x0000000000666319
> Stack dump:
> 0.	Program arguments: llc -cppgen=program bzip2.del.opt.bc
> 
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> 

-- 
Hal Finkel
Assistant Computational Scientist
Leadership Computing Facility
Argonne National Laboratory