[LLVMdev] Error compiling simple loop, Casting.h used by Polly

[Ryan Taylor]

clang:
/home/ryan/llvm/llvm_core/llvm-3.0/include/llvm/Support/Casting.h:194:
typename cast_retty<PHINode, ilist_iterator<Instruction> >::ret_type
llvm::cast(const llvm::ilist_iterator<llvm::Instruction> &): Assertion
`isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed.
0  clang           0x0000000001b3618f
1  clang           0x0000000001b366a9
2  libpthread.so.0 0x00007f5b07d3bc60
3  libc.so.6       0x00007f5b07026d05 gsignal + 53
4  libc.so.6       0x00007f5b0702aab6 abort + 390
5  libc.so.6       0x00007f5b0701f7c5 __assert_fail + 245
6  LLVMPolly.so    0x00007f5b06dae9b8
7  clang           0x0000000001ad97cf
llvm::FPPassManager::runOnFunction(llvm::Function&) + 351
8  clang           0x0000000001ad9059
llvm::FunctionPassManagerImpl::run(llvm::Function&) + 329
9  clang           0x0000000001ad8edb
llvm::FunctionPassManager::run(llvm::Function&) + 139
10 clang           0x000000000076cd6c
clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions
const&, clang::TargetOptions const&, clang::LangOptions const&,
llvm::Module*, clang::BackendAction, llvm::raw_ostream*) + 5004
11 clang           0x000000000076ad83
12 clang           0x0000000000884700 clang::ParseAST(clang::Sema&, bool) +
448
13 clang           0x000000000076a1fb clang::CodeGenAction::ExecuteAction()
+ 859
14 clang           0x000000000062b63d
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 957
15 clang           0x00000000006147d7
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 2247
16 clang           0x000000000060b81f cc1_main(char const**, char const**,
char const*, void*) + 2991
17 clang           0x0000000000610c35 main + 757
18 libc.so.6       0x00007f5b07011eff __libc_start_main + 255
19 clang           0x000000000060abad
Stack dump:
0.    Program arguments: /usr/local/bin/clang -cc1 -triple
x86_64-unknown-linux-gnu -emit-llvm -disable-free -main-file-name loop1.c
-mrelocation-model static -masm-verbose -mconstructor-aliases
-munwind-tables -target-cpu x86-64 -target-linker-version 2.21.0.20110327
-momit-leaf-frame-pointer -coverage-file loop1.c.ll -resource-dir
/usr/local/bin/../lib/clang/3.1 -fmodule-cache-path
/var/tmp/clang-module-cache -internal-isystem /usr/local/include
-internal-isystem /usr/local/bin/../lib/clang/3.1/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include
-O3 -fdebug-compilation-dir /home/ryan/llvm/llvm_core/llvm-3.0
-ferror-limit 19 -fmessage-length 100 -mstackrealign -fgnu-runtime
-fobjc-runtime-has-arc -fobjc-runtime-has-weak -fobjc-fragile-abi
-fdiagnostics-show-option -fcolor-diagnostics -load
/home/ryan/llvm/llvm_core/llvm-3.0/tools/polly/Release+Asserts/lib/LLVMPolly.so
-mllvm -polly -o loop1.c.ll -x c loop1.c
1.    <eof> parser at end of file
2.    Per-function optimization
3.    Running pass 'Polly - Prepare code for polly' on function '@func'
clang: error: unable to execute command: Aborted
clang: error: clang frontend command failed due to signal (use -v to see
invocation)
clang: note: diagnostic msg: Please submit a bug report to
http://llvm.org/bugs/ and include command line arguments and all diagnostic
information.
clang: note: diagnostic msg: Preprocessed source(s) and associated run
script(s) are located at:
clang: note: diagnostic msg: /tmp/loop1-xX24bI.i
clang: note: diagnostic msg: /tmp/loop1-xX24bI.sh

This code was running fine earlier today before I "up"'d the svn checkout
for everything (polly, clang, llvm) and reinstalled updated cloog. I have
attached a test case.

I am compiling with this:

clang -Xclang -load -Xclang ${PATH_TO_POLLY_LIB}LLVMPolly.so $1 -mllvm
-polly -O3 -S -emit-llvm
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