http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58349
Bug ID: 58349
Summary: ARMv7: ICE in vect_determine_vectorization_factor, at
tree-vect-loop.c:349
Product: gcc
Version: 4.6.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: pascal.massimino at gmail dot com
Created attachment 30759
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30759&action=edit
preprocessed source to repro the ICE
[Got an ICE on ARMv7, and a suggestion to file a bug for it. Here it goes.]
The ICE disappeared when i changed the 'uint8_t' types to just 'int' in the
offending code.
The code is from the 'libwebp' open-source project:
http://git.chromium.org/webm/libwebp.git
Diagnostic:
gcc -v -save-temps -O3 -DNDEBUG -DWEBP_HAVE_PNG -DWEBP_HAVE_JPEG
-DWEBP_HAVE_TIFF -DWEBP_USE_THREAD -Wextra -Wold-style-definition
-Wmissing-prototypes -Wmissing-declarations -Wdeclaration-after-statement
-Wshadow -march=armv7-a -mfloat-abi=hard -mfpu=neon -mtune=cortex-a8 -Isrc/
-Wall -c src/dsp/upsampling.c -o src/dsp/upsampling.o
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabihf/4.6/lto-wrapper
Target: arm-linux-gnueabihf
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.6.3-1ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.6/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.6 --enable-shared --enable-linker-build-id
--with-system-zlib --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.6
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object
--enable-plugin --enable-objc-gc --enable-multilib --disable-sjlj-exceptions
--with-arch=armv7-a --with-float=hard --with-fpu=vfpv3-d16 --with-mode=thumb
--disable-werror --enable-checking=release --build=arm-linux-gnueabihf
--host=arm-linux-gnueabihf --target=arm-linux-gnueabihf
Thread model: posix
gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-O3' '-D' 'NDEBUG' '-D' 'WEBP_HAVE_PNG'
'-D' 'WEBP_HAVE_JPEG' '-D' 'WEBP_HAVE_TIFF' '-D' 'WEBP_USE_THREAD' '-Wextra'
'-Wold-style-definition' '-Wmissing-prototypes' '-Wmissing-declarations'
'-Wdeclaration-after-statement' '-Wshadow' '-march=armv7-a' '-mfloat-abi=hard'
'-mfpu=neon' '-mtune=cortex-a8' '-I' 'src/' '-Wall' '-c' '-o'
'src/dsp/upsampling.o' '-mthumb'
/usr/lib/gcc/arm-linux-gnueabihf/4.6/cc1 -E -quiet -v -I src/ -imultilib .
-imultiarch arm-linux-gnueabihf -D NDEBUG -D WEBP_HAVE_PNG -D WEBP_HAVE_JPEG -D
WEBP_HAVE_TIFF -D WEBP_USE_THREAD src/dsp/upsampling.c -march=armv7-a
-mfloat-abi=hard -mfpu=neon -mtune=cortex-a8 -mthumb -Wextra
-Wold-style-definition -Wmissing-prototypes -Wmissing-declarations
-Wdeclaration-after-statement -Wshadow -Wall -O3 -fpch-preprocess
-fstack-protector -o upsampling.i
ignoring nonexistent directory "/usr/local/include/arm-linux-gnueabihf"
ignoring nonexistent directory
"/usr/lib/gcc/arm-linux-gnueabihf/4.6/../../../../arm-linux-gnueabihf/include"
#include "..." search starts here:
#include <...> search starts here:
src/
/usr/lib/gcc/arm-linux-gnueabihf/4.6/include
/usr/local/include
/usr/lib/gcc/arm-linux-gnueabihf/4.6/include-fixed
/usr/include/arm-linux-gnueabihf
/usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-O3' '-D' 'NDEBUG' '-D' 'WEBP_HAVE_PNG'
'-D' 'WEBP_HAVE_JPEG' '-D' 'WEBP_HAVE_TIFF' '-D' 'WEBP_USE_THREAD' '-Wextra'
'-Wold-style-definition' '-Wmissing-prototypes' '-Wmissing-declarations'
'-Wdeclaration-after-statement' '-Wshadow' '-march=armv7-a' '-mfloat-abi=hard'
'-mfpu=neon' '-mtune=cortex-a8' '-I' 'src/' '-Wall' '-c' '-o'
'src/dsp/upsampling.o' '-mthumb'
/usr/lib/gcc/arm-linux-gnueabihf/4.6/cc1 -fpreprocessed upsampling.i -quiet
-dumpbase upsampling.c -march=armv7-a -mfloat-abi=hard -mfpu=neon
-mtune=cortex-a8 -mthumb -auxbase-strip src/dsp/upsampling.o -O3 -Wextra
-Wold-style-definition -Wmissing-prototypes -Wmissing-declarations
-Wdeclaration-after-statement -Wshadow -Wall -version -fstack-protector -o
upsampling.s
GNU C (Ubuntu/Linaro 4.6.3-1ubuntu5) version 4.6.3 (arm-linux-gnueabihf)
compiled by GNU C version 4.6.3, GMP version 5.0.2, MPFR version 3.1.0-p3,
MPC version 0.9
GGC heuristics: --param ggc-min-expand=91 --param ggc-min-heapsize=115799
GNU C (Ubuntu/Linaro 4.6.3-1ubuntu5) version 4.6.3 (arm-linux-gnueabihf)
compiled by GNU C version 4.6.3, GMP version 5.0.2, MPFR version 3.1.0-p3,
MPC version 0.9
GGC heuristics: --param ggc-min-expand=91 --param ggc-min-heapsize=115799
Compiler executable checksum: ffcbc490dd19d9f3c1e5842c6cc7a10d
src/dsp/upsampling.c: In function ‘Yuv444ToRgb565’:
src/dsp/upsampling.c:223:13: internal compiler error: in
vect_determine_vectorization_factor, at tree-vect-loop.c:349
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.6/README.Bugs> for instructions.
Preprocessed source stored into /tmp/ccGBzfRC.out file, please attach this to
your bugreport.
