[PATCH] D66320: [Bugpoint redesign] Added pass to reduce Basic Blocks

Thu Sep 19 13:03:03 PDT 2019

hctim added a comment.

Looks like this broke the sanitizer buildbots - I'll confirm that a revert fixes and will follow up with it:

  FAIL: LLVM :: Reduce/remove-bbs.ll (25951 of 33613)
  ******************** TEST 'LLVM :: Reduce/remove-bbs.ll' FAILED ********************
  Script:
  --
  : 'RUN: at line 4';   llvm-reduce --test "/usr/bin/python" --test-arg /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/Reduce/Inputs/remove-bbs.py /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/Reduce/remove-bbs.ll -o /b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/Reduce/Output/remove-bbs.ll.tmp
  : 'RUN: at line 5';   cat /b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/test/Reduce/Output/remove-bbs.ll.tmp | /b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/FileCheck -implicit-check-not=uninteresting /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/test/Reduce/remove-bbs.ll
  --
  Exit Code: 77

  Command Output (stderr):
  --
  *** Reducing Functions...
  ----------------------------
  Function Index Reference:
  	1: main
  ----------------------------
  Increasing granularity...
  Already at minimum size. Cannot reduce anymore.
  ----------------------------
  Increasing granularity...Success! New Chunks:
  	[1,2]
  	[3,4]
  ==2672==WARNING: MemorySanitizer: use-of-uninitialized-value
      #0 0x4d69bb in replaceBranchTerminator /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/tools/llvm-reduce/deltas/ReduceBasicBlocks.cpp:54:12
      #1 0x4d69bb in extractBasicBlocksFromModule(std::__1::vector<llvm::Chunk, std::__1::allocator<llvm::Chunk> >, llvm::Module*) /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/tools/llvm-reduce/deltas/ReduceBasicBlocks.cpp:114
      #2 0x4c61c9 in __invoke<void (*&)(std::__1::vector<llvm::Chunk, std::__1::allocator<llvm::Chunk> >, llvm::Module *), const std::__1::vector<llvm::Chunk, std::__1::allocator<llvm::Chunk> > &, llvm::Module *> /b/sanitizer-x86_64-linux-fast/build/libcxx_build_msan/include/c++/v1/type_traits:3501:1
      #3 0x4c61c9 in void std::__1::__invoke_void_return_wrapper<void>::__call<void (*&)(std::__1::vector<llvm::Chunk, std::__1::allocator<llvm::Chunk> >, llvm::Module*), std::__1::vector<llvm::Chunk, std::__1::allocator<llvm::Chunk> > const&, llvm::Module*>(void (*&)(std::__1::vector<llvm::Chunk, std::__1::allocator<llvm::Chunk> >, llvm::Module*), std::__1::vector<llvm::Chunk, std::__1::allocator<llvm::Chunk> > const&, llvm::Module*&&) /b/sanitizer-x86_64-linux-fast/build/libcxx_build_msan/include/c++/v1/__functional_base:348
      #4 0x4b7607 in operator() /b/sanitizer-x86_64-linux-fast/build/libcxx_build_msan/include/c++/v1/functional:1867:16
      #5 0x4b7607 in operator() /b/sanitizer-x86_64-linux-fast/build/libcxx_build_msan/include/c++/v1/functional:2473
      #6 0x4b7607 in llvm::runDeltaPass(llvm::TestRunner&, int, std::__1::function<void (std::__1::vector<llvm::Chunk, std::__1::allocator<llvm::Chunk> > const&, llvm::Module*)>) /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/tools/llvm-reduce/deltas/Delta.cpp:132
      #7 0x4d4170 in llvm::reduceBasicBlocksDeltaPass(llvm::TestRunner&) /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/tools/llvm-reduce/deltas/ReduceBasicBlocks.cpp:145:3
      #8 0x4ad562 in runDeltaPasses /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/tools/llvm-reduce/DeltaManager.h:28:3
      #9 0x4ad562 in main /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/tools/llvm-reduce/llvm-reduce.cpp:88
      #10 0x7f9ec536f2e0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202e0)
      #11 0x436ef9 in _start (/b/sanitizer-x86_64-linux-fast/build/llvm_build_msan/bin/llvm-reduce+0x436ef9)

  SUMMARY: MemorySanitizer: use-of-uninitialized-value /b/sanitizer-x86_64-linux-fast/build/llvm-project/llvm/tools/llvm-reduce/deltas/ReduceBasicBlocks.cpp:54:12 in replaceBranchTerminator

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D66320/new/

https://reviews.llvm.org/D66320