https://llvm.org/bugs/show_bug.cgi?id=26688
Bug ID: 26688
Summary: Assert in LoopUnroll.cpp: Loops should be in LCSSA
form after loop-unroll.
Product: tools
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: opt
Assignee: unassignedb...@nondot.org
Reporter: karl-johan.karls...@ericsson.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Created attachment 15929
--> https://llvm.org/bugs/attachment.cgi?id=15929&action=edit
Reproducer: ./opt -S -loop-rotate -licm -instcombine -loop-unroll
./loopunroll.ll -o -
$ ./opt -S -loop-rotate -licm -instcombine -loop-unroll ./loopunroll.ll -o -
opt: ../lib/Transforms/Utils/LoopUnroll.cpp:604: bool
llvm::UnrollLoop(llvm::Loop *, unsigned int, unsigned int, bool, bool, unsigned
int, llvm::LoopInfo *, llvm::ScalarEvolution *, llvm::DominatorTree *,
llvm::AssumptionCache *, bool): Assertion `OuterL->isLCSSAForm(*DT) && "Loops
should be in LCSSA form after loop-unroll."' failed.
0 opt 0x00000000016a1138
llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40
1 opt 0x000000000169f906 llvm::sys::RunSignalHandlers() + 54
2 opt 0x00000000016a1c6a
3 libpthread.so.0 0x00007f3231779340
4 libc.so.6 0x00007f32309a1cc9 gsignal + 57
5 libc.so.6 0x00007f32309a50d8 abort + 328
6 libc.so.6 0x00007f323099ab86
7 libc.so.6 0x00007f323099ac32
8 opt 0x00000000016f3844
9 opt 0x00000000015848c9
10 opt 0x0000000000f1ad7f
llvm::LPPassManager::runOnFunction(llvm::Function&) + 799
11 opt 0x00000000012cfc78
llvm::FPPassManager::runOnFunction(llvm::Function&) + 344
12 opt 0x00000000012cfebb
llvm::FPPassManager::runOnModule(llvm::Module&) + 43
13 opt 0x00000000012d0375
llvm::legacy::PassManagerImpl::run(llvm::Module&) + 869
14 opt 0x000000000062036e main + 8670
15 libc.so.6 0x00007f323098cec5 __libc_start_main + 245
16 opt 0x000000000060f96c
Stack dump:
0. Program arguments: ./opt -S -loop-rotate -licm -instcombine
-loop-unroll ./loopunroll.ll -o -
1. Running pass 'Function Pass Manager' on module './loopunroll.ll'.
2. Running pass 'Loop Pass Manager' on function '@fn1'
3. Running pass 'Unroll loops' on basic block '%bb4'
Aborted (core dumped)
--
You are receiving this mail because:
You are on the CC list for the bug.
_______________________________________________
llvm-bugs mailing list
llvm-bugs@lists.llvm.org
http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
