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  1. JDK
  2. JDK-8277132

C2: assert(!def_outside->member(r)) failed: Use of external LRG overlaps the same LRG defined in this block

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      (synopsis is provisional until the cause is found)

      Attached Fuzzer test fails on x86_32:

      $ ../build/linux-x86-server-fastdebug/images/jdk/bin/java -XX:-TieredCompilation Test

      # Internal Error (/home/shade/trunks/jdk/src/hotspot/share/opto/live.cpp:110), pid=1008749, tid=1008757
      # assert(!def_outside->member(r)) failed: Use of external LRG overlaps the same LRG defined in this block

      Current CompileTask:
      C2: 126 15 % Test::vMeth1 @ 112 (243 bytes)

      Stack: [0xd137f000,0xd1400000], sp=0xd13fd360, free space=504k
      Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
      V [libjvm.so+0x1001d84] PhaseLive::compute(unsigned int)+0xb04
      V [libjvm.so+0x7aa1d3] PhaseChaitin::Register_Allocate()+0x923
      V [libjvm.so+0x8f77c8] Compile::Code_Gen()+0x368
      V [libjvm.so+0x90120f] Compile::Compile(ciEnv*, ciMethod*, int, bool, bool, bool, bool, bool, DirectiveSet*)+0x145f
      V [libjvm.so+0x7346cc] C2Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x84c
      V [libjvm.so+0x913cc5] CompileBroker::invoke_compiler_on_method(CompileTask*)+0x1665
      V [libjvm.so+0x9149d9] CompileBroker::compiler_thread_loop()+0x689
      V [libjvm.so+0x93d9eb] CompilerThread::thread_entry(JavaThread*, JavaThread*)+0x2b
      V [libjvm.so+0x16852c8] JavaThread::thread_main_inner()+0x658
      V [libjvm.so+0x1685845] JavaThread::run()+0x435
      V [libjvm.so+0x168c47e] Thread::call_run()+0xfe
      V [libjvm.so+0x12968b3] thread_native_entry(Thread*)+0x123
      C [libpthread.so.0+0x8635] start_thread+0xf5

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              Assignee:
              shade Aleksey Shipilev
              Reporter:
              shade Aleksey Shipilev
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                Created:
                Updated: