[LLVMdev] new stage2/stage3 comparison failures
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
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tools/clang/lib/Frontend/Rewrite/CMakeFiles/clangRewriteFrontend.dir/RewriteModernObjC.cpp.o
tools/clang/lib/Frontend/Rewrite/CMakeFiles/clangRewriteFrontend.dir/RewriteObjC.cpp.o
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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
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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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