[LLVMdev] new stage2/stage3 comparison failures (original) (raw)

Silviu Baranga Silviu.Baranga at arm.com
Thu Jul 9 11:52:01 PDT 2015

Hi Jack,

r241673 introduced some non-determinism which could account for what you are seeing, and should have been fixed in r241809.

This was seen by at least one buildbot: http://bb.pgr.jp/builders/clang-3stage-i686-linux/builds/2726

Thanks, Silviu

From: llvmdev-bounces at cs.uiuc.edu [llvmdev-bounces at cs.uiuc.edu] On Behalf Of Jack Howarth [howarth.mailing.lists at gmail.com] Sent: 09 July 2015 18:00 To: LLVM Developers Mailing List Subject: [LLVMdev] new stage2/stage3 comparison failures

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): lib/Analysis/CMakeFiles/LLVMAnalysis.dir/DependenceAnalysis.cpp.o lib/AsmParser/CMakeFiles/LLVMAsmParser.dir/LLLexer.cpp.o lib/Bitcode/Reader/CMakeFiles/LLVMBitReader.dir/BitcodeReader.cpp.o 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 projects/compiler-rt/lib/asan/CMakeFiles/RTAsan.osx.dir/asan_activation.cc.o projects/compiler-rt/lib/asan/CMakeFiles/RTAsan.osx.dir/asan_allocator.cc.o projects/compiler-rt/lib/asan/CMakeFiles/RTAsan.osx.dir/asan_debugging.cc.o projects/compiler-rt/lib/asan/CMakeFiles/RTAsan.osx.dir/asan_fake_stack.cc.o projects/compiler-rt/lib/asan/CMakeFiles/RTAsan.osx.dir/asan_flags.cc.o projects/compiler-rt/lib/asan/CMakeFiles/RTAsan.osx.dir/asan_globals.cc.o projects/compiler-rt/lib/asan/CMakeFiles/RTAsan.osx.dir/asan_interceptors.cc.o projects/compiler-rt/lib/asan/CMakeFiles/RTAsan.osx.dir/asan_linux.cc.o projects/compiler-rt/lib/asan/CMakeFiles/RTAsan.osx.dir/asan_mac.cc.o 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tools/clang/lib/Frontend/Rewrite/CMakeFiles/clangRewriteFrontend.dir/RewriteObjC.cpp.o tools/clang/lib/Lex/CMakeFiles/clangLex.dir/HeaderSearch.cpp.o tools/clang/lib/Sema/CMakeFiles/clangSema.dir/SemaOverload.cpp.o tools/clang/lib/Serialization/CMakeFiles/clangSerialization.dir/ASTReader.cpp.o tools/clang/lib/Serialization/CMakeFiles/clangSerialization.dir/ASTReaderDecl.cpp.o tools/clang/lib/Serialization/CMakeFiles/clangSerialization.dir/ASTWriter.cpp.o tools/clang/lib/Serialization/CMakeFiles/clangSerialization.dir/ASTWriterDecl.cpp.o tools/clang/lib/Serialization/CMakeFiles/clangSerialization.dir/ASTWriterStmt.cpp.o tools/clang/lib/Serialization/CMakeFiles/clangSerialization.dir/GlobalModuleIndex.cpp.o tools/clang/tools/extra/clang-tidy/CMakeFiles/clangTidy.dir/ClangTidy.cpp.o tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/ClangAttrEmitter.cpp.o tools/clang/utils/TableGen/CMakeFiles/clang-tblgen.dir/NeonEmitter.cpp.o tools/llvm-config/BuildVariables.inc tools/llvm-config/CMakeFiles/llvm-config.dir/llvm-config.cpp.o tools/llvm-readobj/CMakeFiles/llvm-readobj.dir/ARMAttributeParser.cpp.o tools/polly/lib/CMakeFiles/Polly.dir/Analysis/ScopInfo.cpp.o tools/polly/lib/CMakeFiles/Polly.dir/External/isl/imath/gmp_compat.c.o tools/polly/lib/CMakeFiles/Polly.dir/External/isl/isl_polynomial.c.o tools/polly/lib/CMakeFiles/Polly.dir/JSON/json_reader.cpp.o tools/polly/lib/CMakeFiles/Polly.dir/JSON/json_writer.cpp.o utils/TableGen/CMakeFiles/llvm-tblgen.dir/AsmMatcherEmitter.cpp.o utils/TableGen/CMakeFiles/llvm-tblgen.dir/AsmWriterEmitter.cpp.o utils/TableGen/CMakeFiles/llvm-tblgen.dir/AsmWriterInst.cpp.o utils/TableGen/CMakeFiles/llvm-tblgen.dir/CodeEmitterGen.cpp.o utils/TableGen/CMakeFiles/llvm-tblgen.dir/CodeGenDAGPatterns.cpp.o 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 utils/TableGen/CMakeFiles/llvm-tblgen.dir/InstrInfoEmitter.cpp.o utils/TableGen/CMakeFiles/llvm-tblgen.dir/RegisterInfoEmitter.cpp.o /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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