[LLVMbugs] [Bug 18384] New: ARM Test-suite regression

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=18384

            Bug ID: 18384
           Summary: ARM Test-suite regression
           Product: new-bugs
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: renato.golin at linaro.org
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

This error started after commit 198456 on our test-suite buildbot:

While deleting: label %for.cond115
An asserting value handle still pointed to this value!
UNREACHABLE executed at
/external/buildbot/clang-native-arm-lnt/llvm.src/lib/IR/Value.cpp:671!
Stack dump:
0.      Program arguments:
/external/buildbot/clang-native-arm-lnt/llvm.install.1/bin/clang -cc1 -triple
armv7-unknown-linux-gnueabihf -emit-obj -disable-free -main-file-name
macroblock.c -mrelocation-model static -fmath-errno -masm-verbose
-mconstructor-aliases -target-cpu cortex-a15 -target-abi aapcs-linux
-mfloat-abi hard -target-linker-version 2.22 -coverage-file
/external/buildbot/clang-native-arm-lnt/tests/nt/build/MultiSource/Applications/JM/lencod/Output/macroblock.llvm.o
-resource-dir
/external/buildbot/clang-native-arm-lnt/llvm.install.1/bin/../lib/clang/3.5 -D
__USE_LARGEFILE64 -D _FILE_OFFSET_BITS=64 -D _GNU_SOURCE -D __STDC_LIMIT_MACROS
-D NDEBUG -I
/external/buildbot/clang-native-arm-lnt/tests/nt/build/MultiSource/Applications/JM/lencod
-I
/external/buildbot/clang-native-arm-lnt/test-suite/MultiSource/Applications/JM/lencod
-I /external/buildbot/clang-native-arm-lnt/test-suite/include -I
../../../../include -internal-isystem /usr/local/include -internal-isystem
/external/buildbot/clang-native-arm-lnt/llvm.install.1/bin/../lib/clang/3.5/include
-internal-externc-isystem /usr/include/arm-linux-gnueabihf
-internal-externc-isystem /include -internal-externc-isystem /usr/include -O3
-fdebug-compilation-dir
/external/buildbot/clang-native-arm-lnt/tests/nt/build/MultiSource/Applications/JM/lencod
-ferror-limit 19 -fmessage-length 0 -mstackrealign -fno-signed-char
-fobjc-runtime=gcc -fdiagnostics-show-option -vectorize-loops -vectorize-slp -o
Output/macroblock.llvm.o -x c
/external/buildbot/clang-native-arm-lnt/test-suite/MultiSource/Applications/JM/lencod/macroblock.c 
1.      <eof> parser at end of file
2.      Per-module optimization passes
3.      Running pass 'CallGraph Pass Manager' on module
'/external/buildbot/clang-native-arm-lnt/test-suite/MultiSource/Applications/JM/lencod/macroblock.c'.
4.      Running pass 'Loop Pass Manager' on function '@IntraChromaRDDecision'
5.      Running pass 'Canonicalize natural loops' on basic block '%for.body117'
clang: error: unable to execute command: Aborted (core dumped)
clang: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 3.5 (trunk 198484)
Target: armv7l-unknown-linux-gnueabihf
Thread model: posix
clang: note: diagnostic msg: PLEASE submit a bug report to
http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and
associated run script.
clang: note: diagnostic msg: 
********************

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