[Bug rtl-optimization/60818] ICE in validate_condition_mode on powerpc*-linux-gnu*

[glaubitz at physik dot fu-berlin.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60818

John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> changed:

           What    |Removed                     |Added
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                 CC|                            |glaubitz at physik dot fu-berlin.d
                   |                            |e

--- Comment #12 from John Paul Adrian Glaubitz <glaubitz at physik dot fu-berlin.de> ---
Hi!

We just recently started seeing this issue in Debian, however, only for the
powerpc-linux-gnuspe targets, i.e. e500v2 (Debian architecture: powerpcspe)
[1]:

g++ -c -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/qt4-x11-4.8.7+dfsg=.
-fstack-protector-strong -Wformat -Werror=format-security -Wdate-time
-D_FORTIFY_SOURCE=2 -std=gnu++98 -I/usr/include/freetype2 -pthread
-I/usr/include/glib-2.0 -I/usr/lib/powerpc-linux-gnuspe/glib-2.0/include -O2
-fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -D_REENTRANT -fPIC
-DQT_SHARED -DQT_BUILD_CORE_LIB -DQT_NO_USING_NAMESPACE -DQT_NO_CAST_TO_ASCII
-DQT_ASCII_CAST_WARNINGS -DQT3_SUPPORT -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER
-DELF_INTERPRETER=\"/lib/ld.so.1\" -DQLIBRARYINFO_EPOCROOT -DQT_USE_ICU
-DHB_EXPORT=Q_CORE_EXPORT -DQT_NO_DEBUG -D_LARGEFILE64_SOURCE
-D_LARGEFILE_SOURCE -I../../mkspecs/linux-g++ -I. -I../../include
-I../../include/QtCore -I.rcc/release-shared -Iglobal -I../../tools/shared
-I../3rdparty/harfbuzz/src -I../3rdparty/md5 -I../3rdparty/md4
-I.moc/release-shared -o .obj/release-shared/qtextboundaryfinder.o
tools/qtextboundaryfinder.cpp
tools/qtextboundaryfinder.cpp: In member function 'bool
QTextBoundaryFinder::isAtBoundary() const':
tools/qtextboundaryfinder.cpp:444:1: internal compiler error: in
validate_condition_mode, at config/rs6000/rs6000.c:17958
 }
 ^
0x109c5aab validate_condition_mode(rtx_code, machine_mode)
        ../../src/gcc/config/rs6000/rs6000.c:17957
0x10b438df branch_comparison_operator(rtx_def*, machine_mode)
        ../../src/gcc/config/rs6000/predicates.md:1125
0x10b43b13 branch_positive_comparison_operator(rtx_def*, machine_mode)
        ../../src/gcc/config/rs6000/predicates.md:1204
0x10b5bad7 recog_72
        ../../src/gcc/config/rs6000/altivec.md:643
0x10bb7f3b recog_for_combine_1
        ../../src/gcc/combine.c:10945
0x10bbd4ff recog_for_combine
        ../../src/gcc/combine.c:11142
0x10bcb0c7 try_combine
        ../../src/gcc/combine.c:3503
0x10bcec7f combine_instructions
        ../../src/gcc/combine.c:1475
0x10bcec7f rest_of_handle_combine
        ../../src/gcc/combine.c:14356
0x10bcec7f execute
        ../../src/gcc/combine.c:14399
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-6/README.Bugs> for instructions.
g++ -c -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/qt4-x11-4.8.7+dfsg=.
-fstack-protector-strong -Wformat -Werror=format-security -Wdate-time
-D_FORTIFY_SOURCE=2 -std=gnu++98 -I/usr/include/freetype2 -pthread
-I/usr/include/glib-2.0 -I/usr/lib/powerpc-linux-gnuspe/glib-2.0/include -O2
-fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -D_REENTRANT -fPIC
-DQT_SHARED -DQT_BUILD_CORE_LIB -DQT_NO_USING_NAMESPACE -DQT_NO_CAST_TO_ASCII
-DQT_ASCII_CAST_WARNINGS -DQT3_SUPPORT -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER
-DELF_INTERPRETER=\"/lib/ld.so.1\" -DQLIBRARYINFO_EPOCROOT -DQT_USE_ICU
-DHB_EXPORT=Q_CORE_EXPORT -DQT_NO_DEBUG -D_LARGEFILE64_SOURCE
-D_LARGEFILE_SOURCE -I../../mkspecs/linux-g++ -I. -I../../include
-I../../include/QtCore -I.rcc/release-shared -Iglobal -I../../tools/shared
-I../3rdparty/harfbuzz/src -I../3rdparty/md5 -I../3rdparty/md4
-I.moc/release-shared -o .obj/release-shared/qtimeline.o tools/qtimeline.cpp
g++ -c -g -O2 -fdebug-prefix-map=/<<BUILDDIR>>/qt4-x11-4.8.7+dfsg=.
-fstack-protector-strong -Wformat -Werror=format-security -Wdate-time
-D_FORTIFY_SOURCE=2 -std=gnu++98 -I/usr/include/freetype2 -pthread
-I/usr/include/glib-2.0 -I/usr/lib/powerpc-linux-gnuspe/glib-2.0/include -O2
-fvisibility=hidden -fvisibility-inlines-hidden -Wall -W -D_REENTRANT -fPIC
-DQT_SHARED -DQT_BUILD_CORE_LIB -DQT_NO_USING_NAMESPACE -DQT_NO_CAST_TO_ASCII
-DQT_ASCII_CAST_WARNINGS -DQT3_SUPPORT -DQT_MOC_COMPAT -DQT_USE_QSTRINGBUILDER
-DELF_INTERPRETER=\"/lib/ld.so.1\" -DQLIBRARYINFO_EPOCROOT -DQT_USE_ICU
-DHB_EXPORT=Q_CORE_EXPORT -DQT_NO_DEBUG -D_LARGEFILE64_SOURCE
-D_LARGEFILE_SOURCE -I../../mkspecs/linux-g++ -I. -I../../include
-I../../include/QtCore -I.rcc/release-shared -Iglobal -I../../tools/shared
-I../3rdparty/harfbuzz/src -I../3rdparty/md5 -I../3rdparty/md4
-I.moc/release-shared -o .obj/release-shared/qvector.o tools/qvector.cpp
Preprocessed source stored into /tmp/ccg5tpbm.out file, please attach this to
your bugreport.

I'm attaching the pre-processed source in case that might be useful. Odd that
despite this bug being so old, it just surfaced on Debian powerpcspe recently.

Thanks,
Adrian

> [1] https://buildd.debian.org/status/fetch.php?pkg=qt4-x11&arch=powerpcspe&ver=4%3A4.8.7%2Bdfsg-9&stamp=1476330034