Regression(277905): Assertion failed: (index < Probs.size() && "Not a current successor!"), function getProbabilityIterator, when building chromium for chromecast

[Quuxplusone]

Bugzilla Link	PR28894
Status	RESOLVED FIXED
Importance	P normal
Reported by	Nico Weber (nicolasweber@gmx.de)
Reported on	2016-08-07 15:04:13 -0700
Last modified on	2017-01-27 18:43:23 -0800
Version	trunk
Hardware	PC All
CC	hans@chromium.org, kyle+llvm@iteratee.net, llvm-bugs@lists.llvm.org
Fixed by commit(s)
Attachments	SkLightingImageFilter-29432f.zip (608368 bytes, application/zip)
Blocks
Blocked by
See also

Sorry about the huge regression range. I'll try to narrow it down.

Assertion failed: (index < Probs.size() && "Not a current successor!"),
function getProbabilityIterator, file
/b/build/slave/mac_upload_clang/build/src/third_party/llvm/lib/CodeGen/MachineBasicBlock.cpp,
line 1184.
Stack dump:
0.  Program arguments: /Users/thakis/src/chrome/src/third_party/llvm-
build/Release+Asserts/bin/clang -cc1 -triple thumbv7--linux-android -emit-obj -
disable-free -main-file-name SkLightingImageFilter.cpp -mrelocation-model pic -
pic-level 2 -mthread-model posix -relaxed-aliasing -fmath-errno -masm-verbose -
mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu cortex-a8 -
target-feature +soft-float-abi -target-feature -fp-only-sp -target-feature -d16
-target-feature +vfp3 -target-feature -fp16 -target-feature -vfp4 -target-
feature -fp-armv8 -target-feature +neon -target-feature -crypto -target-abi
aapcs-linux -mfloat-abi soft -target-linker-version 253.3 -dwarf-column-info -
debug-info-kind=line-tables-only -dwarf-version=4 -debugger-tuning=gdb -
ffunction-sections -fdata-sections -coverage-file
/Users/thakis/src/chrome/src/out/gn/obj/skia/skia/SkLightingImageFilter.o -
resource-dir /Users/thakis/src/chrome/src/third_party/llvm-
build/Release+Asserts/bin/../lib/clang/4.0.0 -dependency-file
obj/skia/skia/SkLightingImageFilter.o.d -MT
obj/skia/skia/SkLightingImageFilter.o -isystem
../../third_party/android_tools/ndk/sources/cxx-stl/llvm-libc++/libcxx/include -
isystem ../../third_party/android_tools/ndk/sources/cxx-stl/llvm-
libc++abi/libcxxabi/include -isystem
../../third_party/android_tools/ndk/sources/android/support/include -D
V8_DEPRECATION_WARNINGS -D ENABLE_NOTIFICATIONS -D ENABLE_BROWSER_CDMS -D
ENABLE_PLUGINS=1 -D ENABLE_SPELLCHECK=1 -D USE_BROWSER_SPELLCHECKER=1 -D
USE_OPENSSL_CERTS=1 -D NO_TCMALLOC -D USE_EXTERNAL_POPUP_MENU=1 -D
ENABLE_WEBRTC=1 -D DISABLE_NACL -D USE_PROPRIETARY_CODECS -D
SAFE_BROWSING_DB_REMOTE -D CHROMIUM_BUILD -D ENABLE_WEBVR -D
FIELDTRIAL_TESTING_ENABLED -D CR_CLANG_REVISION=277909-1 -D
_FILE_OFFSET_BITS=64 -D ANDROID -D HAVE_SYS_UIO_H -D ANDROID_NDK_VERSION=r10e -
D __GNU_SOURCE=1 -D __compiler_offsetof=__builtin_offsetof -D nan=__builtin_nan
-D _DEBUG -D DYNAMIC_ANNOTATIONS_ENABLED=1 -D WTF_USE_DYNAMIC_ANNOTATIONS=1 -D
SK_IGNORE_DW_GRAY_FIX -D SK_IGNORE_LINEONLY_AA_CONVEX_PATH_OPTS -D
SK_SUPPORT_GPU=1 -D SK_BUILD_FOR_ANDROID -D USE_CHROMIUM_SKIA -D
SK_ARM_HAS_NEON -D SK_GAMMA_APPLY_TO_A8 -D SK_GAMMA_EXPONENT=1.4 -D
SK_GAMMA_CONTRAST=0.0 -D SK_DEFAULT_FONT_CACHE_LIMIT=1048576 -D XML_STATIC -I
../.. -I gen -I ../../skia/config -I ../../skia/ext -I
../../third_party/skia/include/c -I ../../third_party/skia/include/config -I
../../third_party/skia/include/core -I ../../third_party/skia/include/effects -
I ../../third_party/skia/include/images -I ../../third_party/skia/include/lazy -
I ../../third_party/skia/include/pathops -I ../../third_party/skia/include/pdf -
I ../../third_party/skia/include/pipe -I ../../third_party/skia/include/ports -
I ../../third_party/skia/include/utils -I ../../third_party/skia/include/gpu -I
../../third_party/skia/src/gpu -I ../../third_party/skia/include/private -I
../../third_party/skia/include/client/android -I
../../third_party/skia/src/core -I ../../third_party/skia/src/image -I
../../third_party/skia/src/opts -I ../../third_party/skia/src/pdf -I
../../third_party/skia/src/ports -I ../../third_party/skia/src/sfnt -I
../../third_party/skia/src/utils -I ../../third_party/skia/src/lazy -I
../../third_party/zlib -I
../../third_party/android_tools/ndk/sources/android/cpufeatures -I
../../third_party/expat/files/lib -I ../../third_party/freetype-android/include
-I ../../third_party/freetype-android/src/include -isysroot
../../third_party/android_tools/ndk/platforms/android-16/arch-arm -internal-
isystem ../../third_party/android_tools/ndk/platforms/android-16/arch-
arm/usr/local/include -internal-isystem
/Users/thakis/src/chrome/src/third_party/llvm-
build/Release+Asserts/bin/../lib/clang/4.0.0/include -internal-externc-isystem
../../third_party/android_tools/ndk/platforms/android-16/arch-arm/include -
internal-externc-isystem ../../third_party/android_tools/ndk/platforms/android-
16/arch-arm/usr/include -Os -Werror -Wall -Wno-unused-variable -Wno-missing-
field-initializers -Wno-unused-parameter -Wno-c++11-narrowing -Wno-covered-
switch-default -Wno-deprecated-register -Wno-unneeded-internal-declaration -Wno-
inconsistent-missing-override -Wno-shift-negative-value -Wno-undefined-var-
template -Wno-nonportable-include-path -Wno-undefined-bool-conversion -Wno-
tautological-undefined-compare -Wno-deprecated -std=gnu++11 -fdebug-compilation-
dir /Users/thakis/src/chrome/src/out/gn -ferror-limit 19 -fmessage-length 248 -
fvisibility hidden -fvisibility-inlines-hidden -femulated-tls -stack-protector
1 -stack-protector-buffer-size 4 -fallow-half-arguments-and-returns -fno-rtti -
fno-signed-char -fno-threadsafe-statics -fobjc-runtime=gcc -fdiagnostics-show-
option -fcolor-diagnostics -vectorize-loops -vectorize-slp -o
obj/skia/skia/SkLightingImageFilter.o -x c++
../../third_party/skia/src/effects/SkLightingImageFilter.cpp
1.  <eof> parser at end of file
2.  Code generation
3.  Running pass 'Function Pass Manager' on module
'../../third_party/skia/src/effects/SkLightingImageFilter.cpp'.
4.  Running pass 'If Converter' on function
'@_ZNK12_GLOBAL__N_120SpecularLightingType5lightERK8SkPoint3S3_S3_'
clang: error: unable to execute command: Abort trap: 6
clang: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 4.0.0 (trunk 277909)
Target: arm--linux-android
Thread model: posix
InstalledDir: /Users/thakis/src/chrome/src/out/gn/../../third_party/llvm-
build/Release+Asserts/bin
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:
********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang: note: diagnostic msg:
/var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/SkLightingImageFilter-29432f.cpp
clang: note: diagnostic msg:
/var/folders/c5/8d7sdn1x2mg92mj0rndghhdr0000gn/T/SkLightingImageFilter-29432f.sh
clang: note: diagnostic msg:

[Quuxplusone]

Attached SkLightingImageFilter-29432f.zip (608368 bytes, application/zip): repro

[Quuxplusone]

It's due to r277905.

[Quuxplusone]

Nicos-MBP:llvm-rw thakis$ svn merge -c -277905 .
--- Reverse-merging r277905 into '.':
U    lib/CodeGen/IfConversion.cpp
U    test/CodeGen/Thumb2/thumb2-ifcvt1.ll
--- Recording mergeinfo for reverse merge of r277905 into '.':
 U   .
Nicos-MBP:llvm-rw thakis$ svn commit -m 'Revert r277905, it caused PR28894'
Sending        lib/CodeGen/IfConversion.cpp
Sending        test/CodeGen/Thumb2/thumb2-ifcvt1.ll
Transmitting file data ..
Committed revision 277962.

[Quuxplusone]

See also bug 28883, a possible dupe.

[Quuxplusone]

Sounds like this was fixed by reverting.