[LLVMdev] new stage2/stage3 comparison failures

Jack Howarth howarth.mailing.lists at gmail.com
Thu Jul 9 10:00:21 PDT 2015 

   Are any of the buildbots set up to validate the stage2/stage3
binaries on a 3 stage bootstrap of llvm/compiler-rt/libc++/polly? On
x86_64-apple-darwin using the fink packaging scripts of David Fang, I
have found that at some point after  r241513 the following differences
appear...

UNRESOLVED DIFFS (stage2 vs. stage3):
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  lib/Bitcode/Writer/CMakeFiles/LLVMBitWriter.dir/BitcodeWriter.cpp.o
  lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/AggressiveAntiDepBreaker.cpp.o
  lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/Analysis.cpp.o
  lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/LiveDebugVariables.cpp.o
  lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineModuleInfo.cpp.o
  lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/MachineScheduler.cpp.o
  lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/RegAllocGreedy.cpp.o
  lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/RegAllocPBQP.cpp.o
  lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/RegisterScavenging.cpp.o
  lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/SplitKit.cpp.o
  lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/StackColoring.cpp.o
  lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/TargetLoweringObjectFileImpl.cpp.o
  lib/IR/CMakeFiles/LLVMCore.dir/AsmWriter.cpp.o
  lib/IR/CMakeFiles/LLVMCore.dir/DIBuilder.cpp.o
  lib/IR/CMakeFiles/LLVMCore.dir/Function.cpp.o
  lib/IR/CMakeFiles/LLVMCore.dir/InlineAsm.cpp.o
  lib/MC/CMakeFiles/LLVMMC.dir/ELFObjectWriter.cpp.o
  lib/ProfileData/CMakeFiles/LLVMProfileData.dir/InstrProfReader.cpp.o
  lib/Support/CMakeFiles/LLVMSupport.dir/APFloat.cpp.o
  lib/Support/CMakeFiles/LLVMSupport.dir/APInt.cpp.o
  lib/Support/CMakeFiles/LLVMSupport.dir/CommandLine.cpp.o
  lib/Support/CMakeFiles/LLVMSupport.dir/ConvertUTFWrapper.cpp.o
  lib/Support/CMakeFiles/LLVMSupport.dir/DAGDeltaAlgorithm.cpp.o
  lib/Support/CMakeFiles/LLVMSupport.dir/FoldingSet.cpp.o
  lib/Support/CMakeFiles/LLVMSupport.dir/ScaledNumber.cpp.o
  lib/Support/CMakeFiles/LLVMSupport.dir/Statistic.cpp.o
  lib/Support/CMakeFiles/LLVMSupport.dir/Timer.cpp.o
  lib/TableGen/CMakeFiles/LLVMTableGen.dir/Record.cpp.o
  lib/Target/ARM/MCTargetDesc/CMakeFiles/LLVMARMDesc.dir/ARMUnwindOpAsm.cpp.o
  lib/Transforms/Instrumentation/CMakeFiles/LLVMInstrumentation.dir/AddressSanitizer.cpp.o
  lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/EarlyCSE.cpp.o
  lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/LoopStrengthReduce.cpp.o
  lib/Transforms/Vectorize/CMakeFiles/LLVMVectorize.dir/LoopVectorize.cpp.o
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  projects/compiler-rt/lib/interception/CMakeFiles/RTInterception.osx.dir/interception_type_test.cc.o
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  projects/compiler-rt/lib/lsan/CMakeFiles/RTLSanCommon.osx.dir/lsan_common_linux.cc.o
  projects/compiler-rt/lib/safestack/CMakeFiles/clang_rt.safestack_osx.dir/safestack.cc.o
  projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.osx.dir/sanitizer_allocator.cc.o
  projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.osx.dir/sanitizer_common.cc.o
  projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.osx.dir/sanitizer_common_libcdep.cc.o
  projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.osx.dir/sanitizer_coverage_libcdep.cc.o
  projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.osx.dir/sanitizer_coverage_mapping_libcdep.cc.o
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  projects/compiler-rt/lib/sanitizer_common/CMakeFiles/RTSanitizerCommon.osx.dir/sanitizer_libc.cc.o
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  tools/clang/lib/Frontend/Rewrite/CMakeFiles/clangRewriteFrontend.dir/RewriteObjC.cpp.o
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  tools/llvm-readobj/CMakeFiles/llvm-readobj.dir/ARMAttributeParser.cpp.o
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  utils/TableGen/CMakeFiles/llvm-tblgen.dir/CodeGenRegisters.cpp.o
  utils/TableGen/CMakeFiles/llvm-tblgen.dir/CodeGenSchedule.cpp.o
  utils/TableGen/CMakeFiles/llvm-tblgen.dir/CodeGenTarget.cpp.o
  utils/TableGen/CMakeFiles/llvm-tblgen.dir/FixedLenDecoderEmitter.cpp.o
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/sw/src/fink.build/llvm37-3.7.0-1/llvm-3.7.0.src
######## 3-STAGE BOOTSTRAP of llvm/clang FAILED

It been hard to pinpoint that exact point of regression because there
have been so many other bootstrap failures introduced and resolved in
between that commit and current trunk. Hopefully one of the buildbots
has been observing these as well.
           Jack

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