[llvm-bugs] [Bug 25443] New: [Polly] Stack overflow with invariant load hoisting

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=25443

            Bug ID: 25443
           Summary: [Polly] Stack overflow with invariant load hoisting
           Product: Projects
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Polly
          Assignee: polly-dev at googlegroups.com
          Reporter: tobias at grosser.es
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Created attachment 15243
  --> https://llvm.org/bugs/attachment.cgi?id=15243&action=edit
Test case

With git-svn-id: https://llvm.org/svn/llvm-project/polly/trunk@252375 and
polly-opt -polly-codegen -polly-process-unprofitable the attached test case
gives me a stack overflow in the invariant-load-hoisting:

#323 0x00007fffefca2383 in
IslNodeBuilder::preloadInvariantEquivClass(std::tuple<llvm::SCEV const*,
std::forward_list<polly::MemoryAccess*, std::allocator<polly::MemoryAccess*> >,
isl_set*> const&) ()
   from /home/grosser/Projects/polly/cmake_opt/lib/../lib/libPolly.so
#324 0x00007fffefca20dd in IslNodeBuilder::materializeValue(isl_id*) ()
   from /home/grosser/Projects/polly/cmake_opt/lib/../lib/libPolly.so
#325 0x00007fffefca2e52 in
IslNodeBuilder::preloadInvariantLoad(polly::MemoryAccess const&, isl_set*) ()
   from /home/grosser/Projects/polly/cmake_opt/lib/../lib/libPolly.so
#326 0x00007fffefca23ae in
IslNodeBuilder::preloadInvariantEquivClass(std::tuple<llvm::SCEV const*,
std::forward_list<polly::MemoryAccess*, std::allocator<polly::MemoryAccess*> >,
isl_set*> const&) ()
   from /home/grosser/Projects/polly/cmake_opt/lib/../lib/libPolly.so
#327 0x00007fffefca2383 in
IslNodeBuilder::preloadInvariantEquivClass(std::tuple<llvm::SCEV const*,
std::forward_list<polly::MemoryAccess*, std::allocator<polly::MemoryAccess*> >,
isl_set*> const&) ()
   from /home/grosser/Projects/polly/cmake_opt/lib/../lib/libPolly.so
#328 0x00007fffefca20dd in IslNodeBuilder::materializeValue(isl_id*) ()
   from /home/grosser/Projects/polly/cmake_opt/lib/../lib/libPolly.so
#329 0x00007fffefca2e52 in
IslNodeBuilder::preloadInvariantLoad(polly::MemoryAccess const&, isl_set*) ()
   from /home/grosser/Projects/polly/cmake_opt/lib/../lib/libPolly.so
#330 0x00007fffefca23ae in
IslNodeBuilder::preloadInvariantEquivClass(std::tuple<llvm::SCEV const*,
std::forward_list<polly::MemoryAccess*, std::allocator<polly::MemoryAccess*> >,
isl_set*> const&) ()
   from /home/grosser/Projects/polly/cmake_opt/lib/../lib/libPolly.so
#331 0x00007fffefca2383 in
IslNodeBuilder::preloadInvariantEquivClass(std::tuple<llvm::SCEV const*,
std::forward_list<polly::MemoryAccess*, std::allocator<polly::MemoryAccess*> >,
isl_set*> const&) ()
   from /home/grosser/Projects/polly/cmake_opt/lib/../lib/libPolly.so
#332 0x00007fffefca20dd in IslNodeBuilder::materializeValue(isl_id*) ()
   from /home/grosser/Projects/polly/cmake_opt/lib/../lib/libPolly.so
#333 0x00007fffefca2e52 in
IslNodeBuilder::preloadInvariantLoad(polly::MemoryAccess const&, isl_set*) ()
   from /home/grosser/Projects/polly/cmake_opt/lib/../lib/libPolly.so
#334 0x00007fffefca23ae in
IslNodeBuilder::preloadInvariantEquivClass(std::tuple<llvm::SCEV const*,
std::forward_list<polly::MemoryAccess*, std::allocator<polly::MemoryAccess*> >,
isl_set*> const&) ()
   from /home/grosser/Projects/polly/cmake_opt/lib/../lib/libPolly.so
#335 0x00007fffefca2383 in
IslNodeBuilder::preloadInvariantEquivClass(std::tuple<llvm::SCEV const*,
std::forward_list<polly::MemoryAccess*, std::allocator<polly::MemoryAccess*> >,
isl_set*> const&) ()
   from /home/grosser/Projects/polly/cmake_opt/lib/../lib/libPolly.so

This is a LNT test case reduced from MultiSource/Applications/JM/ldecod

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