[Bug lto/55113] internal compiler error: in emit_library_call_value_1, at calls.c:3739
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55113 --- Comment #3 from Patrick Oppenlander patrick at motec dot com.au 2012-11-21 02:33:28 UTC --- My apologies -- I haven't been receiving notification emails from bugzilla for some reason so I didn't see your comments. I'll attach the preprocessed source in a few minutes. The object files were compiled with -Os
[Bug lto/55112] internal compiler error: in simplify_subreg, at simplify-rtx.c:5424
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55112 --- Comment #4 from Patrick Oppenlander patrick at motec dot com.au 2012-11-21 02:58:22 UTC --- Compiling with -O0 changes the ICE to: internal compiler error: in emit_move_insn, at expr.c:3435
[Bug lto/55112] internal compiler error: in simplify_subreg, at simplify-rtx.c:5424
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55112 --- Comment #5 from Patrick Oppenlander patrick at motec dot com.au 2012-11-21 03:04:27 UTC --- Please ignore my last comment. It was meant for bug 55113.
[Bug lto/55113] internal compiler error: in emit_library_call_value_1, at calls.c:3739
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55113 --- Comment #4 from Patrick Oppenlander patrick at motec dot com.au 2012-11-21 03:05:26 UTC --- Compiling with -O0 changes the ICE to: internal compiler error: in emit_move_insn, at expr.c:3435
[Bug lto/55113] internal compiler error: in emit_library_call_value_1, at calls.c:3739
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55113 --- Comment #5 from Patrick Oppenlander patrick at motec dot com.au 2012-11-21 03:11:33 UTC --- Created attachment 28747 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28747 Preprocessed source
[Bug lto/55113] internal compiler error: in emit_library_call_value_1, at calls.c:3739
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55113 --- Comment #6 from Patrick Oppenlander patrick at motec dot com.au 2012-11-21 03:12:20 UTC --- Preprocessed source added. Compile with: powerpc-eabispe-gcc -fno-builtin -fshort-double -Os -flto=jobserver -std=gnu99 -nostdlib -fuse-linker-plugin -o test etpu_port_E.c tpu_E.c to reproduce the bug. Thanks, and sorry again for the delay.
[Bug lto/55112] internal compiler error: in simplify_subreg, at simplify-rtx.c:5424
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55112 --- Comment #6 from Patrick Oppenlander patrick at motec dot com.au 2012-11-21 05:44:50 UTC --- Created attachment 28750 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28750 Test case
[Bug lto/55112] internal compiler error: in simplify_subreg, at simplify-rtx.c:5424
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55112 --- Comment #7 from Patrick Oppenlander patrick at motec dot com.au 2012-11-21 05:45:51 UTC --- Test code added. Compile with powerpc-eabispe-gcc -fshort-double -flto=jobserver -nostdlib -o test eqadc_E.c to reproduce the bug. Looks like it is related to -f-short-double. Thanks, Patrick
[Bug lto/55112] New: internal compiler error: in simplify_subreg, at simplify-rtx.c:5424
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55112 Bug #: 55112 Summary: internal compiler error: in simplify_subreg, at simplify-rtx.c:5424 Classification: Unclassified Product: gcc Version: 4.7.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: lto AssignedTo: unassig...@gcc.gnu.org ReportedBy: patr...@motec.com.au Using cross compile gcc (x86_64-powerpc-eabispe) the following command line results in an internal compiler error. I've attached the problem object file. Hope this is enough information, thanks. patrick@gtr:~/bug/report1$ powerpc-eabispe-gcc -v -Os -flto=jobserver -nostdlib -o test bug.o Using built-in specs. COLLECT_GCC=powerpc-eabispe-gcc COLLECT_LTO_WRAPPER=/home/patrick/src/e7/toolchain/stage2/bin/../libexec/gcc/powerpc-eabispe/4.7.2/lto-wrapper Target: powerpc-eabispe Configured with: /z/src/e7/toolchain/src/gcc-4.7.2/configure --prefix=/z/src/e7/toolchain/stage2 --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=powerpc-eabispe --enable-languages=c,c++ --with-sysroot=/z/src/e7/toolchain/../prex_sysroot --disable-nls --disable-werror --with-newlib --with-gmp=/z/src/e7/toolchain/stage2 --with-mpfr=/z/src/e7/toolchain/stage2 --disable-shared --disable-debug --disable-libssp --with-cpu=8540 Thread model: single gcc version 4.7.2 (GCC) COMPILER_PATH=/home/patrick/src/e7/toolchain/stage2/bin/../libexec/gcc/powerpc-eabispe/4.7.2/:/home/patrick/src/e7/toolchain/stage2/bin/../libexec/gcc/:/home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/powerpc-eabispe/4.7.2/../../../../powerpc-eabispe/bin/ LIBRARY_PATH=/home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/powerpc-eabispe/4.7.2/:/home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/:/home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/powerpc-eabispe/4.7.2/../../../../powerpc-eabispe/lib/ COLLECT_GCC_OPTIONS='-v' '-Os' '-flto=jobserver' '-nostdlib' '-o' 'test' '-mcpu=8540' /home/patrick/src/e7/toolchain/stage2/bin/../libexec/gcc/powerpc-eabispe/4.7.2/collect2 -plugin /home/patrick/src/e7/toolchain/stage2/bin/../libexec/gcc/powerpc-eabispe/4.7.2/liblto_plugin.so -plugin-opt=/home/patrick/src/e7/toolchain/stage2/bin/../libexec/gcc/powerpc-eabispe/4.7.2/lto-wrapper -plugin-opt=-fresolution=/tmp/ccTv6kV7.res -flto=jobserver --sysroot=/z/src/e7/toolchain/../prex_sysroot --eh-frame-hdr -V -dn -Bstatic -o test -L/home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/powerpc-eabispe/4.7.2 -L/home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc -L/home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/powerpc-eabispe/4.7.2/../../../../powerpc-eabispe/lib bug.o GNU ld (GNU Binutils) 2.22 Supported emulations: elf32ppc elf32ppclinux elf32ppcsim powerpc-eabispe-gcc @/tmp/ccu1YKNX.args Using built-in specs. COLLECT_GCC=powerpc-eabispe-gcc Target: powerpc-eabispe Configured with: /z/src/e7/toolchain/src/gcc-4.7.2/configure --prefix=/z/src/e7/toolchain/stage2 --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=powerpc-eabispe --enable-languages=c,c++ --with-sysroot=/z/src/e7/toolchain/../prex_sysroot --disable-nls --disable-werror --with-newlib --with-gmp=/z/src/e7/toolchain/stage2 --with-mpfr=/z/src/e7/toolchain/stage2 --disable-shared --disable-debug --disable-libssp --with-cpu=8540 Thread model: single gcc version 4.7.2 (GCC) COLLECT_GCC_OPTIONS='-c' '-msdata=none' '-mno-spe' '-mcpu=8540' '-v' '-Os' '-nostdlib' '-mcpu=8540' '-dumpdir' './' '-dumpbase' 'test.wpa' '-fltrans-output-list=/tmp/cc4GjAt6.ltrans.out' '-fwpa' '-fresolution=/tmp/ccTv6kV7.res' /home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/../../libexec/gcc/powerpc-eabispe/4.7.2/lto1 -quiet -dumpdir ./ -dumpbase test.wpa -msdata=none -mno-spe -mcpu=8540 -mcpu=8540 -auxbase bug -Os -version -fltrans-output-list=/tmp/cc4GjAt6.ltrans.out -fwpa -fresolution=/tmp/ccTv6kV7.res @/tmp/ccfQPfB6 GNU GIMPLE (GCC) version 4.7.2 (powerpc-eabispe) compiled by GNU C version 4.7.2, GMP version 5.0.1, MPFR version 3.1.1, MPC version 0.9 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 GNU GIMPLE (GCC) version 4.7.2 (powerpc-eabispe) compiled by GNU C version 4.7.2, GMP version 5.0.1, MPFR version 3.1.1, MPC version 0.9 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
[Bug lto/55112] internal compiler error: in simplify_subreg, at simplify-rtx.c:5424
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55112 --- Comment #1 from Patrick Oppenlander patrick at motec dot com.au 2012-10-28 22:18:32 UTC --- Created attachment 28549 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28549 Problem object file
[Bug lto/55113] New: internal compiler error: in emit_library_call_value_1, at calls.c:3739
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55113 Bug #: 55113 Summary: internal compiler error: in emit_library_call_value_1, at calls.c:3739 Classification: Unclassified Product: gcc Version: 4.7.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: lto AssignedTo: unassig...@gcc.gnu.org ReportedBy: patr...@motec.com.au Created attachment 28550 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28550 Problem object files Using cross-compile gcc (x86_64 to powerpc) the following command line results in an internal compiler error. I have attached the problem object files (couldn't reduce beyond these two). Hope this is enough information, thanks. patrick@gtr:~/bug/report2$ powerpc-eabispe-gcc -v -Os -flto=jobserver -nostdlib -o test *.o Using built-in specs. COLLECT_GCC=powerpc-eabispe-gcc COLLECT_LTO_WRAPPER=/home/patrick/src/e7/toolchain/stage2/bin/../libexec/gcc/powerpc-eabispe/4.7.2/lto-wrapper Target: powerpc-eabispe Configured with: /z/src/e7/toolchain/src/gcc-4.7.2/configure --prefix=/z/src/e7/toolchain/stage2 --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=powerpc-eabispe --enable-languages=c,c++ --with-sysroot=/z/src/e7/toolchain/../prex_sysroot --disable-nls --disable-werror --with-newlib --with-gmp=/z/src/e7/toolchain/stage2 --with-mpfr=/z/src/e7/toolchain/stage2 --disable-shared --disable-debug --disable-libssp --with-cpu=8540 Thread model: single gcc version 4.7.2 (GCC) COMPILER_PATH=/home/patrick/src/e7/toolchain/stage2/bin/../libexec/gcc/powerpc-eabispe/4.7.2/:/home/patrick/src/e7/toolchain/stage2/bin/../libexec/gcc/:/home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/powerpc-eabispe/4.7.2/../../../../powerpc-eabispe/bin/ LIBRARY_PATH=/home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/powerpc-eabispe/4.7.2/:/home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/:/home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/powerpc-eabispe/4.7.2/../../../../powerpc-eabispe/lib/ COLLECT_GCC_OPTIONS='-v' '-Os' '-flto=jobserver' '-nostdlib' '-o' 'test' '-mcpu=8540' /home/patrick/src/e7/toolchain/stage2/bin/../libexec/gcc/powerpc-eabispe/4.7.2/collect2 -plugin /home/patrick/src/e7/toolchain/stage2/bin/../libexec/gcc/powerpc-eabispe/4.7.2/liblto_plugin.so -plugin-opt=/home/patrick/src/e7/toolchain/stage2/bin/../libexec/gcc/powerpc-eabispe/4.7.2/lto-wrapper -plugin-opt=-fresolution=/tmp/ccXmIQW9.res -flto=jobserver --sysroot=/z/src/e7/toolchain/../prex_sysroot --eh-frame-hdr -V -dn -Bstatic -o test -L/home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/powerpc-eabispe/4.7.2 -L/home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc -L/home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/powerpc-eabispe/4.7.2/../../../../powerpc-eabispe/lib bug0.o bug1.o GNU ld (GNU Binutils) 2.22 Supported emulations: elf32ppc elf32ppclinux elf32ppcsim powerpc-eabispe-gcc @/tmp/ccMr3FEZ.args Using built-in specs. COLLECT_GCC=powerpc-eabispe-gcc Target: powerpc-eabispe Configured with: /z/src/e7/toolchain/src/gcc-4.7.2/configure --prefix=/z/src/e7/toolchain/stage2 --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=powerpc-eabispe --enable-languages=c,c++ --with-sysroot=/z/src/e7/toolchain/../prex_sysroot --disable-nls --disable-werror --with-newlib --with-gmp=/z/src/e7/toolchain/stage2 --with-mpfr=/z/src/e7/toolchain/stage2 --disable-shared --disable-debug --disable-libssp --with-cpu=8540 Thread model: single gcc version 4.7.2 (GCC) COLLECT_GCC_OPTIONS='-c' '-msdata=none' '-mno-spe' '-mcpu=8540' '-v' '-Os' '-nostdlib' '-mcpu=8540' '-dumpdir' './' '-dumpbase' 'test.wpa' '-fltrans-output-list=/tmp/cc06h8H9.ltrans.out' '-fwpa' '-fresolution=/tmp/ccXmIQW9.res' /home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/../../libexec/gcc/powerpc-eabispe/4.7.2/lto1 -quiet -dumpdir ./ -dumpbase test.wpa -msdata=none -mno-spe -mcpu=8540 -mcpu=8540 -auxbase bug0 -Os -version -fltrans-output-list=/tmp/cc06h8H9.ltrans.out -fwpa -fresolution=/tmp/ccXmIQW9.res @/tmp/ccZssqpa GNU GIMPLE (GCC) version 4.7.2 (powerpc-eabispe) compiled by GNU C version 4.7.2, GMP version 5.0.1, MPFR version 3.1.1, MPC version 0.9 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 GNU GIMPLE (GCC) version 4.7.2 (powerpc-eabispe) compiled by GNU C version 4.7.2, GMP version 5.0.1, MPFR version 3.1.1, MPC version 0.9 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
[Bug lto/55113] internal compiler error: in emit_library_call_value_1, at calls.c:3739
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55113 --- Comment #7 from Patrick Oppenlander patrick at motec dot com.au 2013-03-25 05:41:48 UTC --- Still present in 4.8 etpu/etpu_port.c: In function 'tpu_port_status_get.isra.26': etpu/etpu_port.c:326:2: internal compiler error: in emit_library_call_value_1, at calls.c:3757 Please submit a full bug report, with preprocessed source if appropriate. See http://gcc.gnu.org/bugs.html for instructions. make: *** [/tmp/ccad0BqF.ltrans2.ltrans.o] Error 1 lto-wrapper: make returned 2 exit status /home/patrick/src/e7/toolchain/stage2/bin/../lib/gcc/powerpc-eabispe/4.8.0/../../../../powerpc-eabispe/bin/ld: lto-wrapper failed collect2: error: ld returned 1 exit status
[Bug lto/55112] internal compiler error: in simplify_subreg, at simplify-rtx.c:5424
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55112 Patrick Oppenlander patrick at motec dot com.au changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution||FIXED --- Comment #8 from Patrick Oppenlander patrick at motec dot com.au 2013-03-25 05:51:28 UTC --- Cannot reproduce with 4.8.0.
[Bug lto/55113] ICE in emit_library_call_value_1, at calls.c:3757
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55113 Patrick Oppenlander patrick at motec dot com.au changed: What|Removed |Added Attachment #28550|0 |1 is obsolete|| Attachment #28747|0 |1 is obsolete|| --- Comment #8 from Patrick Oppenlander patrick at motec dot com.au --- Created attachment 30264 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=30264action=edit Reduced test case Compile with: powerpc-eabispe-gcc -fshort-double -flto -nostdlib -o test bug.c to reproduce the bug.
[Bug lto/55113] ICE in emit_library_call_value_1, at calls.c:3757
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55113 --- Comment #9 from Patrick Oppenlander patrick at motec dot com.au --- Compiling the new test case results in: patrick@gtr:~/Downloads/source$ powerpc-eabispe-gcc -v -fshort-double -flto -nostdlib -o test bug.c Using built-in specs. COLLECT_GCC=powerpc-eabispe-gcc COLLECT_LTO_WRAPPER=/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.1/lto-wrapper Target: powerpc-eabispe Configured with: /home/patrick/src/e7/toolchain/src/gcc-4.8.1/configure --prefix=/home/patrick/src/e7/toolchain/stage2 --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=powerpc-eabispe --enable-languages=c,c++ --with-sysroot=/home/patrick/src/e7/toolchain/../prex_sysroot --disable-nls --disable-werror --with-newlib --with-gmp=/home/patrick/src/e7/toolchain/stage2 --with-mpfr=/home/patrick/src/e7/toolchain/stage2 --disable-shared --disable-debug --disable-libssp --with-cpu=8540 Thread model: single gcc version 4.8.1 (GCC) COLLECT_GCC_OPTIONS='-v' '-fshort-double' '-flto' '-nostdlib' '-o' 'test' '-mcpu=8540' /home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.1/cc1 -quiet -v bug.c -quiet -dumpbase bug.c -mcpu=8540 -auxbase bug -version -fshort-double -flto -o /tmp/ccnCVRUu.s GNU C (GCC) version 4.8.1 (powerpc-eabispe) compiled by GNU C version 4.7.3, GMP version 5.0.1, MPFR version 3.1.2, MPC version 0.9 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring nonexistent directory /home/patrick/src/e7/toolchain/../prex_sysroot/usr/local/include #include ... search starts here: #include ... search starts here: /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.1/include /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.1/include-fixed /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.1/../../../../powerpc-eabispe/include /home/patrick/src/e7/toolchain/../prex_sysroot/usr/include End of search list. GNU C (GCC) version 4.8.1 (powerpc-eabispe) compiled by GNU C version 4.7.3, GMP version 5.0.1, MPFR version 3.1.2, MPC version 0.9 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: e48f86d0c3d6aa531e016751882fea57 COLLECT_GCC_OPTIONS='-v' '-fshort-double' '-flto' '-nostdlib' '-o' 'test' '-mcpu=8540' /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.1/../../../../powerpc-eabispe/bin/as -me500 -many -o /tmp/ccsCqBnU.o /tmp/ccnCVRUu.s COMPILER_PATH=/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.1/:/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.1/:/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/:/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.1/:/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/:/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.1/../../../../powerpc-eabispe/bin/ LIBRARY_PATH=/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.1/:/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.1/../../../../powerpc-eabispe/lib/ COLLECT_GCC_OPTIONS='-v' '-fshort-double' '-flto' '-nostdlib' '-o' 'test' '-mcpu=8540' /home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.1/collect2 -plugin /home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.1/liblto_plugin.so -plugin-opt=/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.1/lto-wrapper -plugin-opt=-fresolution=/tmp/ccXfXmRj.res -flto --sysroot=/home/patrick/src/e7/toolchain/../prex_sysroot --eh-frame-hdr -V -dn -Bstatic -o test -L/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.1 -L/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.1/../../../../powerpc-eabispe/lib /tmp/ccsCqBnU.o GNU ld (GNU Binutils) 2.23.1 Supported emulations: elf32ppc elf32ppclinux elf32ppcsim powerpc-eabispe-gcc @/tmp/ccKgHGUV.args Using built-in specs. COLLECT_GCC=powerpc-eabispe-gcc Target: powerpc-eabispe Configured with: /home/patrick/src/e7/toolchain/src/gcc-4.8.1/configure --prefix=/home/patrick/src/e7/toolchain/stage2 --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=powerpc-eabispe --enable-languages=c,c++ --with-sysroot=/home/patrick/src/e7/toolchain/../prex_sysroot --disable-nls --disable-werror --with-newlib --with-gmp=/home/patrick/src/e7/toolchain/stage2 --with-mpfr=/home/patrick/src/e7/toolchain/stage2 --disable-shared --disable-debug --disable-libssp --with-cpu=8540 Thread model: single gcc version 4.8.1 (GCC) COLLECT_GCC_OPTIONS='-c' '-mcpu=8540' '-v' '-nostdlib' '-mcpu=8540' '-dumpdir' './' '-dumpbase' 'test.wpa' '-fltrans-output-list=/tmp/ccBBf5pw.ltrans.out' '-fwpa' '-fresolution=/tmp/ccXfXmRj.res' /home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.1/lto1 -quiet -dumpdir ./ -dumpbase test.wpa -mcpu=8540 -mcpu=8540 -auxbase ccsCqBnU -version -fltrans-output-list=/tmp
[Bug lto/63215] New: LTO causes symbols for builtin functions to be omitted from object files
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63215
Bug ID: 63215
Summary: LTO causes symbols for builtin functions to be omitted
from object files
Product: gcc
Version: 4.9.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: patrick at motec dot com.au
-flto causes symbols for builtin functions to be omitted from object files.
Specifying -fno-builtin generates the symbols again.
This causes problems when these files are combined into an archive and used for
later linking as the linker can't resolve the symbols.
For example:
abs.c:
int abs(int j)
{
return j 0 ? -j : j;
}
Normal compile:
$ powerpc-eabispe-gcc -c abs.c -o abs.o
$ powerpc-eabispe-gcc-nm abs.o
T abs
Compile with lto:
$ powerpc-eabispe-gcc -flto -c abs.c -o abs_lto.o
$ powerpc-eabispe-gcc-nm abs_lto.o
/home/patrick/toolchain/lib/gcc/powerpc-eabispe/4.9.1/../../../../powerpc-eabispe/bin/nm:
abs_lto.o: no symbols
Compile with lto and no-builtin:
$ powerpc-eabispe-gcc -fno-builtin -flto -c abs.c -o abs_lto_nobuiltin.o
$ powerpc-eabispe-gcc-nm abs_lto_nobuiltin.o
T abs
Here is the output of gcc -v
$ powerpc-eabispe-gcc -v
Using built-in specs.
COLLECT_GCC=powerpc-eabispe-gcc
COLLECT_LTO_WRAPPER=/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.9.1/lto-wrapper
Target: powerpc-eabispe
Configured with: /home/patrick/src/e7/toolchain/src/gcc-4.9.1/configure
--prefix=/home/patrick/src/e7/toolchain/stage2 --build=x86_64-unknown-linux-gnu
--host=x86_64-unknown-linux-gnu --target=powerpc-eabispe
--enable-languages=c,c++
--with-sysroot=/home/patrick/src/e7/toolchain/../prex_sysroot --disable-nls
--disable-werror --with-newlib --with-gmp=/home/patrick/src/e7/toolchain/stage2
--with-mpfr=/home/patrick/src/e7/toolchain/stage2 --disable-shared
--disable-debug --disable-libssp --with-cpu=8540
Thread model: single
gcc version 4.9.1 (GCC)
[Bug lto/63215] LTO causes symbols for builtin functions to be omitted from object files
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63215 --- Comment #3 from Patrick Oppenlander patrick at motec dot com.au --- Thanks for the information! Is there a list of these functions somewhere? Is this somehow related to bug 60395? Thanks, Patrick
[Bug lto/55113] ICE with LTO and -fshort-double
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55113 --- Comment #12 from Patrick Oppenlander patrick at motec dot com.au --- (In reply to Andrew Pinski from comment #10) -fshort-double is what is causing the issue. Why are you using that option in the first place? It changes the ABI. We are using the option as it suits our e200z6 core very well. When it is in use GCC 4.4.3 generates efficient code using the scalar SPFP APU (efs* mnemonics). We don't have a hardware double-precision FPU, and no need for double precision math.
[Bug lto/60394] New: LTO link fails when -fno-builtin is specified
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60394 Bug ID: 60394 Summary: LTO link fails when -fno-builtin is specified Product: gcc Version: 4.8.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: lto Assignee: unassigned at gcc dot gnu.org Reporter: patrick at motec dot com.au Attached are three test cases which demonstrate: 1. Successful link with -Os -flto -nostdlib 2. Successful link with -Os -fno-builtin -nostdlib 3. Failed link with -Os -flto -fno-builtin -nostdlib Test case attached. Full -v log for the failed link: Using built-in specs. COLLECT_GCC=powerpc-eabispe-gcc COLLECT_LTO_WRAPPER=/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.2/lto-wrapper Target: powerpc-eabispe Configured with: /home/patrick/src/e7/toolchain/src/gcc-4.8.2/configure --prefix=/home/patrick/src/e7/toolchain/stage2 --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=powerpc-eabispe --enable-languages=c,c++ --with-sysroot=/home/patrick/src/e7/toolchain/../prex_sysroot --disable-nls --disable-werror --with-newlib --with-gmp=/home/patrick/src/e7/toolchain/stage2 --with-mpfr=/home/patrick/src/e7/toolchain/stage2 --disable-shared --disable-debug --disable-libssp --with-cpu=8540 Thread model: single gcc version 4.8.2 (GCC) COLLECT_GCC_OPTIONS='-v' '-Os' '-flto' '-fno-builtin' '-nostdlib' '-o' 'test3' '-mcpu=8540' /home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.2/cc1 -quiet -v test.c -quiet -dumpbase test.c -mcpu=8540 -auxbase test -Os -version -flto -fno-builtin -o /tmp/ccKQLXfn.s GNU C (GCC) version 4.8.2 (powerpc-eabispe) compiled by GNU C version 4.8.1, GMP version 5.0.1, MPFR version 3.1.2, MPC version 0.9 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring nonexistent directory /home/patrick/src/e7/toolchain/../prex_sysroot/usr/local/include #include ... search starts here: #include ... search starts here: /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/include /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/include-fixed /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/../../../../powerpc-eabispe/include /home/patrick/src/e7/toolchain/../prex_sysroot/usr/include End of search list. GNU C (GCC) version 4.8.2 (powerpc-eabispe) compiled by GNU C version 4.8.1, GMP version 5.0.1, MPFR version 3.1.2, MPC version 0.9 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 1cf996be489ceb10fd0eea05167fda0c COLLECT_GCC_OPTIONS='-v' '-Os' '-flto' '-fno-builtin' '-nostdlib' '-o' 'test3' '-mcpu=8540' /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/../../../../powerpc-eabispe/bin/as -me500 -many -mbig -o /tmp/cc651b3O.o /tmp/ccKQLXfn.s COLLECT_GCC_OPTIONS='-v' '-Os' '-flto' '-fno-builtin' '-nostdlib' '-o' 'test3' '-mcpu=8540' /home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.2/cc1 -quiet -v string.c -quiet -dumpbase string.c -mcpu=8540 -auxbase string -Os -version -flto -fno-builtin -o /tmp/ccKQLXfn.s GNU C (GCC) version 4.8.2 (powerpc-eabispe) compiled by GNU C version 4.8.1, GMP version 5.0.1, MPFR version 3.1.2, MPC version 0.9 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring nonexistent directory /home/patrick/src/e7/toolchain/../prex_sysroot/usr/local/include #include ... search starts here: #include ... search starts here: /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/include /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/include-fixed /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/../../../../powerpc-eabispe/include /home/patrick/src/e7/toolchain/../prex_sysroot/usr/include End of search list. GNU C (GCC) version 4.8.2 (powerpc-eabispe) compiled by GNU C version 4.8.1, GMP version 5.0.1, MPFR version 3.1.2, MPC version 0.9 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 1cf996be489ceb10fd0eea05167fda0c COLLECT_GCC_OPTIONS='-v' '-Os' '-flto' '-fno-builtin' '-nostdlib' '-o' 'test3' '-mcpu=8540' /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/../../../../powerpc-eabispe/bin/as -me500 -many -mbig -o /tmp/ccYvBHUg.o /tmp/ccKQLXfn.s COMPILER_PATH=/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.2/:/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.2/:/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/:/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/:/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/:/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/../../../../powerpc-eabispe/bin/ LIBRARY_PATH=/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/:/home
[Bug lto/60395] New: LTO link fails when -fno-builtin is specified
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60395 Bug ID: 60395 Summary: LTO link fails when -fno-builtin is specified Product: gcc Version: 4.8.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: lto Assignee: unassigned at gcc dot gnu.org Reporter: patrick at motec dot com.au Attached are three test cases which demonstrate: 1. Successful link with -Os -flto -nostdlib 2. Successful link with -Os -fno-builtin -nostdlib 3. Failed link with -Os -flto -fno-builtin -nostdlib Test case attached. Full -v log for the failed link: Using built-in specs. COLLECT_GCC=powerpc-eabispe-gcc COLLECT_LTO_WRAPPER=/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.2/lto-wrapper Target: powerpc-eabispe Configured with: /home/patrick/src/e7/toolchain/src/gcc-4.8.2/configure --prefix=/home/patrick/src/e7/toolchain/stage2 --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=powerpc-eabispe --enable-languages=c,c++ --with-sysroot=/home/patrick/src/e7/toolchain/../prex_sysroot --disable-nls --disable-werror --with-newlib --with-gmp=/home/patrick/src/e7/toolchain/stage2 --with-mpfr=/home/patrick/src/e7/toolchain/stage2 --disable-shared --disable-debug --disable-libssp --with-cpu=8540 Thread model: single gcc version 4.8.2 (GCC) COLLECT_GCC_OPTIONS='-v' '-Os' '-flto' '-fno-builtin' '-nostdlib' '-o' 'test3' '-mcpu=8540' /home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.2/cc1 -quiet -v test.c -quiet -dumpbase test.c -mcpu=8540 -auxbase test -Os -version -flto -fno-builtin -o /tmp/ccKQLXfn.s GNU C (GCC) version 4.8.2 (powerpc-eabispe) compiled by GNU C version 4.8.1, GMP version 5.0.1, MPFR version 3.1.2, MPC version 0.9 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring nonexistent directory /home/patrick/src/e7/toolchain/../prex_sysroot/usr/local/include #include ... search starts here: #include ... search starts here: /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/include /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/include-fixed /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/../../../../powerpc-eabispe/include /home/patrick/src/e7/toolchain/../prex_sysroot/usr/include End of search list. GNU C (GCC) version 4.8.2 (powerpc-eabispe) compiled by GNU C version 4.8.1, GMP version 5.0.1, MPFR version 3.1.2, MPC version 0.9 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 1cf996be489ceb10fd0eea05167fda0c COLLECT_GCC_OPTIONS='-v' '-Os' '-flto' '-fno-builtin' '-nostdlib' '-o' 'test3' '-mcpu=8540' /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/../../../../powerpc-eabispe/bin/as -me500 -many -mbig -o /tmp/cc651b3O.o /tmp/ccKQLXfn.s COLLECT_GCC_OPTIONS='-v' '-Os' '-flto' '-fno-builtin' '-nostdlib' '-o' 'test3' '-mcpu=8540' /home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.2/cc1 -quiet -v string.c -quiet -dumpbase string.c -mcpu=8540 -auxbase string -Os -version -flto -fno-builtin -o /tmp/ccKQLXfn.s GNU C (GCC) version 4.8.2 (powerpc-eabispe) compiled by GNU C version 4.8.1, GMP version 5.0.1, MPFR version 3.1.2, MPC version 0.9 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring nonexistent directory /home/patrick/src/e7/toolchain/../prex_sysroot/usr/local/include #include ... search starts here: #include ... search starts here: /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/include /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/include-fixed /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/../../../../powerpc-eabispe/include /home/patrick/src/e7/toolchain/../prex_sysroot/usr/include End of search list. GNU C (GCC) version 4.8.2 (powerpc-eabispe) compiled by GNU C version 4.8.1, GMP version 5.0.1, MPFR version 3.1.2, MPC version 0.9 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 1cf996be489ceb10fd0eea05167fda0c COLLECT_GCC_OPTIONS='-v' '-Os' '-flto' '-fno-builtin' '-nostdlib' '-o' 'test3' '-mcpu=8540' /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/../../../../powerpc-eabispe/bin/as -me500 -many -mbig -o /tmp/ccYvBHUg.o /tmp/ccKQLXfn.s COMPILER_PATH=/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.2/:/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.8.2/:/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/:/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/:/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/:/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/../../../../powerpc-eabispe/bin/ LIBRARY_PATH=/home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.8.2/:/home
[Bug lto/60395] LTO link fails when -fno-builtin is specified
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60395 --- Comment #1 from Patrick Oppenlander patrick at motec dot com.au --- Created attachment 32245 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=32245action=edit Test cases
[Bug middle-end/60945] internal compiler error: in dwf_regno, at dwarf2cfi.c:909
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60945 --- Comment #1 from Patrick Oppenlander patrick at motec dot com.au --- Created attachment 32665 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=32665action=edit fp-bit.c save temps output
[Bug middle-end/60945] internal compiler error: in dwf_regno, at dwarf2cfi.c:909
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60945 --- Comment #2 from Patrick Oppenlander patrick at motec dot com.au --- Created attachment 32666 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=32666action=edit fp-bit.c save temps output
[Bug middle-end/60945] internal compiler error: in dwf_regno, at dwarf2cfi.c:909
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60945 --- Comment #3 from Patrick Oppenlander patrick at motec dot com.au --- Created attachment 32667 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=32667action=edit Complete build log
[Bug lto/48447] New: LTO link fails to link libgcc correctly when -nostdlib option is specified
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48447 Summary: LTO link fails to link libgcc correctly when -nostdlib option is specified Product: gcc Version: 4.6.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: lto AssignedTo: unassig...@gcc.gnu.org ReportedBy: patr...@motec.com.au Created attachment 23879 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=23879 Test cases Not sure if this is a bug with gcc or binutils (ld) but I suspect gcc as test case 2 succeeds. Attached are 3 test cases which build a minimal project demonstrating the following behaviours: 1. Link with LTO and -nostartfiles (succeeds) 2. Link without LTO and -nostdlib, libgcc is specified on the command line (succeeds) 3. Link with LTO and -nostdlib, libgcc is specified on the command line (fails) *** TEST 1: LTO with -nostartfiles powerpc-eabispe-gcc -nostartfiles -flto -fuse-linker-plugin -Os -o test1 crt0.o main.o -L. *** TEST 2: no LTO with -nostdlib powerpc-eabispe-gcc -nostdlib -Os -o test2 crt0.o main.o /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.6.0/libgcc.a *** TEST 3: LTO with -nostdlib powerpc-eabispe-gcc -nostdlib -flto -fuse-linker-plugin -Os -o test3 crt0.o main.o /home/patrick/src/e7/toolchain/stage2/lib/gcc/powerpc-eabispe/4.6.0/libgcc.a /tmp/ccpXMwiG.ltrans0.ltrans.o: In function `foo.1466': ccpXMwiG.ltrans0.o:(.text+0x84): undefined reference to `_rest32gpr_29_x' collect2: ld returned 1 exit status make: *** [test3] Error 1 Output of gcc -v patrick@gtr:~/src/patrick/test$ powerpc-eabispe-gcc -v Using built-in specs. COLLECT_GCC=powerpc-eabispe-gcc COLLECT_LTO_WRAPPER=/home/patrick/src/e7/toolchain/stage2/libexec/gcc/powerpc-eabispe/4.6.0/lto-wrapper Target: powerpc-eabispe Configured with: /home/patrick/src/e7/toolchain/src/gcc-4.6.0/configure --prefix=/home/patrick/src/e7/toolchain/stage2 --build=x86_64-unknown-linux-gnu --host=x86_64-unknown-linux-gnu --target=powerpc-eabispe --enable-languages=c,c++ --with-sysroot=/home/patrick/src/e7/prex_sysroot --disable-nls --disable-werror --with-newlib --with-gmp=/home/patrick/src/e7/toolchain/stage2 --with-mpfr=/home/patrick/src/e7/toolchain/stage2 --disable-shared --disable-debug --disable-libssp --with-cpu=8540 Thread model: single gcc version 4.6.0 (GCC) I have tried this with binutils 2.21 and the latest 2.21.51 development snapshot. Please let me know if there is any other information I can provide to assist in working this out. Thanks, Patrick
[Bug lto/48447] LTO link fails to link libgcc correctly when -nostdlib option is specified
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48447 --- Comment #4 from Patrick Oppenlander patrick at motec dot com.au 2011-04-06 22:47:12 UTC --- (In reply to comment #3) For now, option -Wl,-plugin-opt=-pass-through=$(LIBGCC) can be manually added to the command line (as discussed in PR42690). That does seem to work for now. Does that mean this is a duplicate?
[Bug lto/48447] LTO link fails to link libgcc correctly when -nostdlib option is specified
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48447 --- Comment #8 from Patrick Oppenlander patrick at motec dot com.au 2011-04-07 22:15:56 UTC --- The correct fix is going to be in the linker, not the compiler, by implementing a second library scan pass and obsoleting the pass-through mechanism. I've got a revised version of that experimental patch that I'll attach to this PR for reference. How does this affect circular dependencies between user supplied libraries. ld used to resolve these ok, and from the outside it seems like a similar problem.
[Bug lto/48447] LTO link fails to link libgcc correctly when -nostdlib option is specified
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48447 --- Comment #10 from Patrick Oppenlander patrick at motec dot com.au 2011-04-07 22:50:25 UTC --- Ok, thanks for explaining that. Another problem I've run into here is that I also need to pass through ecrtn.o with -Wl,-plugin-opt=-pass-through to make sure it gets linked last, otherwise it's symbols end up in the wrong place.
[Bug lto/64162] New: ICE: in emit_library_call_value_1, at calls.c:3779
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64162 Bug ID: 64162 Summary: ICE: in emit_library_call_value_1, at calls.c:3779 Product: gcc Version: 4.9.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: lto Assignee: unassigned at gcc dot gnu.org Reporter: patrick at motec dot com.au Created attachment 34176 -- https://gcc.gnu.org/bugzilla/attachment.cgi?id=34176action=edit Reduced test case $ powerpc-eabispe-gcc.exe -O0 -v -fshort-double -flto -fuse-linker-plugin -nostdlib test.c Using built-in specs. COLLECT_GCC=Z:\home\patrick\src\e7\toolchain\local\bin\powerpc-eabispe-gcc.exe COLLECT_LTO_WRAPPER=z:/home/patrick/src/e7/toolchain/local/bin/../libexec/gcc/powerpc-eabispe/4.9.2/lto-wrapper.exe Target: powerpc-eabispe Configured with: /home/patrick/src/e7/toolchain/src/gcc-combined/configure --prefix=/home/patrick/src/e7/toolchain/local --build=x86_64-unknown-linux-gnu --host=i686-w64-mingw32 --target=powerpc-eabispe --enable-languages=c,c++ --disable-nls --disable-werror --with-newlib --with-sysroot=/home/patrick/src/e7/toolchain/../prex_sysroot --disable-shared --disable-debug --disable-libssp --enable-sjlj-exceptions --disable-win32-registry --disable-threads --with-dwarf2 --without-stabs --with-gnu-ld --with-gnu-as --with-cpu=8540 Thread model: single gcc version 4.9.2 (GCC) COLLECT_GCC_OPTIONS='-O0' '-v' '-fshort-double' '-flto' '-fuse-linker-plugin' '-nostdlib' '-mcpu=8540' z:/home/patrick/src/e7/toolchain/local/bin/../libexec/gcc/powerpc-eabispe/4.9.2/cc1.exe -quiet -v -iprefix z:\home\patrick\src\e7\toolchain\local\bin\../lib/gcc/powerpc-eabispe/4.9.2/ test.c -quiet -dumpbase test.c -mcpu=8540 -auxbase test -O0 -version -fshort-double -flto -fuse-linker-plugin -o C:\users\patrick\Temp\ccFN20sx.s GNU C (GCC) version 4.9.2 (powerpc-eabispe) compiled by GNU C version 4.9.2, GMP version 4.3.2, MPFR version 2.4.2, MPC version 0.8.1 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring duplicate directory z:/home/patrick/src/e7/toolchain/local/lib/gcc/../../lib/gcc/powerpc-eabispe/4.9.2/include ignoring nonexistent directory /home/patrick/src/e7/toolchain/../prex_sysroot/home/patrick/src/e7/toolchain/local/lib/gcc/powerpc-eabispe/4.9.2/../../../../include ignoring duplicate directory z:/home/patrick/src/e7/toolchain/local/lib/gcc/../../lib/gcc/powerpc-eabispe/4.9.2/include-fixed ignoring duplicate directory z:/home/patrick/src/e7/toolchain/local/lib/gcc/../../lib/gcc/powerpc-eabispe/4.9.2/../../../../powerpc-eabispe/include #include ... search starts here: #include ... search starts here: z:\home\patrick\src\e7\toolchain\local\bin\../lib/gcc/powerpc-eabispe/4.9.2/include z:\home\patrick\src\e7\toolchain\local\bin\../lib/gcc/powerpc-eabispe/4.9.2/include-fixed z:\home\patrick\src\e7\toolchain\local\bin\../lib/gcc/powerpc-eabispe/4.9.2/../../../../powerpc-eabispe/include /home/patrick/src/e7/toolchain/../prex_sysroot/usr/include End of search list. GNU C (GCC) version 4.9.2 (powerpc-eabispe) compiled by GNU C version 4.9.2, GMP version 4.3.2, MPFR version 2.4.2, MPC version 0.8.1 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 4a232abe5387117e6bc5358c473b10fb COLLECT_GCC_OPTIONS='-O0' '-v' '-fshort-double' '-flto' '-fuse-linker-plugin' '-nostdlib' '-mcpu=8540' z:/home/patrick/src/e7/toolchain/local/bin/../lib/gcc/powerpc-eabispe/4.9.2/../../../../powerpc-eabispe/bin/as.exe -v -me500 -many -mbig -o C:\users\patrick\Temp\ccQYFUK0.o C:\users\patrick\Temp\ccFN20sx.s GNU assembler version 2.24 (powerpc-eabispe) using BFD version (GNU Binutils) 2.24 COMPILER_PATH=z:/home/patrick/src/e7/toolchain/local/bin/../libexec/gcc/powerpc-eabispe/4.9.2/;z:/home/patrick/src/e7/toolchain/local/bin/../libexec/gcc/;z:/home/patrick/src/e7/toolchain/local/bin/../lib/gcc/powerpc-eabispe/4.9.2/../../../../powerpc-eabispe/bin/ LIBRARY_PATH=z:/home/patrick/src/e7/toolchain/local/bin/../lib/gcc/powerpc-eabispe/4.9.2/;z:/home/patrick/src/e7/toolchain/local/bin/../lib/gcc/;z:/home/patrick/src/e7/toolchain/local/bin/../lib/gcc/powerpc-eabispe/4.9.2/../../../../powerpc-eabispe/lib/ COLLECT_GCC_OPTIONS='-O0' '-v' '-fshort-double' '-flto' '-fuse-linker-plugin' '-nostdlib' '-mcpu=8540' z:/home/patrick/src/e7/toolchain/local/bin/../libexec/gcc/powerpc-eabispe/4.9.2/collect2.exe -plugin z:/home/patrick/src/e7/toolchain/local/bin/../libexec/gcc/powerpc-eabispe/4.9.2/liblto_plugin-0.dll -plugin-opt=z:/home/patrick/src/e7/toolchain/local/bin/../libexec/gcc/powerpc-eabispe/4.9.2/lto-wrapper.exe -plugin-opt=-fresolution=C:\users\patrick\Temp\cc9lZP7A.res -flto --sysroot=/home/patrick/src/e7/toolchain/../prex_sysroot --eh-frame-hdr -V -dn -Bstatic -Lz:/home/patrick/src/e7/toolchain/local/bin/../lib/gcc/powerpc-eabispe/4.9.2 -Lz:/home/patrick/src/e7/toolchain/local/bin/../lib/gcc -Lz:/home/patrick/src/e7/toolchain/local/bin
[Bug c/68039] New: Incorrect unused-result warning
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68039
Bug ID: 68039
Summary: Incorrect unused-result warning
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: patrick at motec dot com.au
Target Milestone: ---
The following code generates an incorrect unused-result warning using gcc
5.2.0:
__attribute__((warn_unused_result)) int x()
{
return 0;
}
int main()
{
return x() ? 0 : 0;
}
> gcc test.c
test.c: In function ‘main’:
test.c:8:9: warning: ignoring return value of ‘x’, declared with attribute
warn_unused_result [-Wunused-result]
return x() ? 0 : 0;
[Bug middle-end/64162] ICE: in emit_library_call_value_1, at calls.c:3779
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64162 --- Comment #4 from Patrick Oppenlander --- Tested with 5.3.0 under mingw and the ICE appears to be fixed.
[Bug c++/71888] New: internal compiler error: in force_type_die, at dwarf2out.c:23236
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71888
Bug ID: 71888
Summary: internal compiler error: in force_type_die, at
dwarf2out.c:23236
Product: gcc
Version: 6.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: patrick at motec dot com.au
Target Milestone: ---
The following code snippet causes an internal compiler error in gcc 6.1.0 if
built with -g.
namespace std
{
using ::__builtin_va_list;
}
$ g++ -g bug.cpp
bug.cpp:3:11: internal compiler error: in force_type_die, at dwarf2out.c:23236
using ::__builtin_va_list;
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.archlinux.org/> for instructions.
[Bug c++/78032] New: Incorrect code generated
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78032
Bug ID: 78032
Summary: Incorrect code generated
Product: gcc
Version: 6.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: patrick at motec dot com.au
Target Milestone: ---
The following test case generates an invalid program using GCC 6.2.1 20160830:
The call to bar is eliminated and the resultant program does nothing.
#include
struct foo {
foo(double);
foo(float);
explicit foo(unsigned);
unsigned v;
};
void bar(foo x = 0u)
{
printf("%d\n", x.v);
}
int main()
{
bar();
return 0;
}
[Bug c++/78032] Incorrect code generated
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78032 Patrick Oppenlander changed: What|Removed |Added Known to work||5.3.0 Known to fail||5.4.0 --- Comment #1 from Patrick Oppenlander --- 5.3.0 correctly diagnoses the invalid program. 5.4.0 also compiles incorrectly without error or warning.
[Bug other/86011] New: Inefficient code generated for ldivmod with constant value
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86011
Bug ID: 86011
Summary: Inefficient code generated for ldivmod with constant
value
Product: gcc
Version: 7.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: patrick at motec dot com.au
Target Milestone: ---
Tested with 7.2.0 and 8.1.0.
The following example unnecessarily calls ldivmod twice:
struct foo { long a, b; };
struct foo test(long long x)
{
return (struct foo){x / 77, x % 77};
}
armv7m-linux-musleabi-gcc -c -O2 test.c
armv7m-linux-musleabi-objdump -d test.o
:
0: b5d0push{r4, r6, r7, lr}
2: 4616mov r6, r2
4: 461fmov r7, r3
6: 4604mov r4, r0
8: 224dmovsr2, #77 ; 0x4d
a: 2300movsr3, #0
c: 4630mov r0, r6
e: 4639mov r1, r7
10: f7ff fffe bl 0 <__aeabi_ldivmod>
14: 4639mov r1, r7
16: 6020str r0, [r4, #0]
18: 224dmovsr2, #77 ; 0x4d
1a: 4630mov r0, r6
1c: 2300movsr3, #0
1e: f7ff fffe bl 0 <__aeabi_ldivmod>
22: 4620mov r0, r4
24: 6062str r2, [r4, #4]
26: bdd0pop {r4, r6, r7, pc}
If the test is rearranged so that the denominator is a function argument the
generated code is as expected:
struct foo { long a, b; };
struct foo test(long long x, long den)
{
return (struct foo){x / den, x % den};
}
armv7m-linux-musleabi-gcc -c -O2 test.c
armv7m-linux-musleabi-objdump -d test.o
:
0: b5d0push{r4, r6, r7, lr}
2: 4616mov r6, r2
4: 461fmov r7, r3
6: 9a04ldr r2, [sp, #16]
8: 4604mov r4, r0
a: 4639mov r1, r7
c: 4630mov r0, r6
e: 17d3asrsr3, r2, #31
10: f7ff fffe bl 0 <__aeabi_ldivmod>
14: e9c4 0200 strdr0, r2, [r4]
18: 4620mov r0, r4
1a: bdd0pop {r4, r6, r7, pc}
[Bug target/86011] Inefficient code generated for ldivmod with constant value
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86011
--- Comment #2 from Patrick Oppenlander ---
Sure,
# cat test.c
struct foo { long a, b; };
struct foo test(long long x)
{
return (struct foo){x / 77, x % 77};
}
# gcc --version
gcc (GCC) 8.1.0
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# gcc -c -O2 test.c
# objdump -d test.o
test.o: file format elf32-littlearm
Disassembly of section .text:
:
0: e92d40d0push{r4, r6, r7, lr}
4: e1a06002mov r6, r2
8: e1a07003mov r7, r3
c: e1a04000mov r4, r0
10: e3a0204dmov r2, #77 ; 0x4d
14: e3a03000mov r3, #0
18: e1a6mov r0, r6
1c: e1a01007mov r1, r7
20: ebfebl 0 <__aeabi_ldivmod>
24: e1a01007mov r1, r7
28: e3a0204dmov r2, #77 ; 0x4d
2c: e3a03000mov r3, #0
30: e584str r0, [r4]
34: e1a6mov r0, r6
38: ebfebl 0 <__aeabi_ldivmod>
3c: e1a4mov r0, r4
40: e5842004str r2, [r4, #4]
44: e8bd80d0pop {r4, r6, r7, pc}
Looks like the same problem is still there.
[Bug middle-end/88456] __atomic_compare_exchange implementation inconsistently used
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88456 --- Comment #3 from Patrick Oppenlander --- (In reply to jos...@codesourcery.com from comment #2) > If the call is one GCC can't expand on its own (atomic operations on large > objects needing locks, architecture lacks required atomic operation > instructions, etc.), it would be reasonable for GCC to inline a definition > to which it would otherwise generate an out-of-line call. What you describe is the current behaviour when using LTO. gcc happily inlines the implementations of atomic library functions for which it can't expand builtins. For context, I came across this problem while implementing atomic support on ARM Cortex-M0. Cortex-M0 doesn't support load/store-exclusive so a full suite of functions must be provided. I then built the same project targeting Cortex-M4 for which the Cortex-M0 implementations are not optimal, but should still work. However, the resultant binary used gcc provided builtins in some places and my Cortex-M0 implementations in others. I think it needs to be consistently one way or the other, or fail to build in this situation. Personally, I like the concept of being able to provide external implementations, especially when considering bare-metal embedded programming.
[Bug other/88456] New: __atomic_compare_exchange implementation inconsistently used
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88456
Bug ID: 88456
Summary: __atomic_compare_exchange implementation
inconsistently used
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: patrick at motec dot com.au
Target Milestone: ---
While implementing atomic support for an embedded target I came across some
unexpected behaviour in gcc.
In the following example:
#include
#include
#include
bool
__atomic_compare_exchange_1(uint8_t *p, uint8_t *e, uint8_t d, bool w, int sm,
int fm)
{
asm volatile("nop");
return false;
}
int main()
{
uint8_t x, e, d;
atomic_compare_exchange_strong_explicit(, , d, 0, 0);
return 0;
}
The provided __atomic_compare_exchange_1 implementation is only used at -O2 or
greater:
% gcc -c -O0 test.c; objdump -d test.o |grep cmpxchg
60: f0 40 0f b0 31 lock cmpxchg %sil,(%rcx)
% gcc -c -O1 test.c; objdump -d test.o |grep cmpxchg
20: f0 0f b0 4c 24 07 lock cmpxchg %cl,0x7(%rsp)
% gcc -c -O2 test.c; objdump -d test.o |grep cmpxchg
% gcc -c -O3 test.c; objdump -d test.o |grep cmpxchg
This was observed with gcc 8.2.1:
% gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/8.2.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --enable-libmpx --with-system-zlib --with-isl
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu
--disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object
--enable-linker-build-id --enable-lto --enable-plugin
--enable-install-libiberty --with-linker-hash-style=gnu
--enable-gnu-indirect-function --enable-multilib --disable-werror
--enable-checking=release --enable-default-pie --enable-default-ssp
--enable-cet=auto
Thread model: posix
gcc version 8.2.1 20181127 (GCC)
[Bug target/37760] internal compiler error: in extract_insn, at recog.c:1990
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37760 --- Comment #3 from Patrick Oppenlander --- I just tried with the gcc-7.3.0 I have installed here and can't reproduce the (> 10 year old!) ICE.
[Bug c/89113] New: Missed stack reuse opportunity when using compound literals
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89113
Bug ID: 89113
Summary: Missed stack reuse opportunity when using compound
literals
Product: gcc
Version: 8.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: patrick at motec dot com.au
Target Milestone: ---
It appears as though gcc is missing a stack reuse opportunity when using
compound literals.
Consider the following example:
void f(int *);
void test1(void)
{
{
f((int []){1, 2, 3, 4});
}
{
f((int []){1, 2, 3, 4});
}
}
void test2(void)
{
{
int tmp[] = {1, 2, 3, 4};
f(tmp);
}
{
int tmp[] = {1, 2, 3, 4};
f(tmp);
}
}
The lifetimes of the compound literals in test1 should be equivalent to the
lifetimes of the tmp arrays in test2.
When compiling with gcc 8.2.1 only test2 reuses the stack locations for the
temporaries making test1 stack use higher:
% gcc -c test.c
% objdump -d test.o
:
0: 55 push %rbp
1: 48 89 e5mov%rsp,%rbp
4: 48 83 ec 30 sub$0x30,%rsp
8: 64 48 8b 04 25 28 00mov%fs:0x28,%rax
f: 00 00
11: 48 89 45 f8 mov%rax,-0x8(%rbp)
15: 31 c0 xor%eax,%eax
17: c7 45 d0 01 00 00 00movl $0x1,-0x30(%rbp)
1e: c7 45 d4 02 00 00 00movl $0x2,-0x2c(%rbp)
25: c7 45 d8 03 00 00 00movl $0x3,-0x28(%rbp)
2c: c7 45 dc 04 00 00 00movl $0x4,-0x24(%rbp)
33: 48 8d 45 d0 lea-0x30(%rbp),%rax
37: 48 89 c7mov%rax,%rdi
3a: e8 00 00 00 00 callq 3f
3f: c7 45 e0 01 00 00 00movl $0x1,-0x20(%rbp)
46: c7 45 e4 02 00 00 00movl $0x2,-0x1c(%rbp)
4d: c7 45 e8 03 00 00 00movl $0x3,-0x18(%rbp)
54: c7 45 ec 04 00 00 00movl $0x4,-0x14(%rbp)
5b: 48 8d 45 e0 lea-0x20(%rbp),%rax
5f: 48 89 c7mov%rax,%rdi
62: e8 00 00 00 00 callq 67
67: 90 nop
68: 48 8b 45 f8 mov-0x8(%rbp),%rax
6c: 64 48 33 04 25 28 00xor%fs:0x28,%rax
73: 00 00
75: 74 05 je 7c
77: e8 00 00 00 00 callq 7c
7c: c9 leaveq
7d: c3 retq
007e :
7e: 55 push %rbp
7f: 48 89 e5mov%rsp,%rbp
82: 48 83 ec 20 sub$0x20,%rsp
86: 64 48 8b 04 25 28 00mov%fs:0x28,%rax
8d: 00 00
8f: 48 89 45 f8 mov%rax,-0x8(%rbp)
93: 31 c0 xor%eax,%eax
95: c7 45 e0 01 00 00 00movl $0x1,-0x20(%rbp)
9c: c7 45 e4 02 00 00 00movl $0x2,-0x1c(%rbp)
a3: c7 45 e8 03 00 00 00movl $0x3,-0x18(%rbp)
aa: c7 45 ec 04 00 00 00movl $0x4,-0x14(%rbp)
b1: 48 8d 45 e0 lea-0x20(%rbp),%rax
b5: 48 89 c7mov%rax,%rdi
b8: e8 00 00 00 00 callq bd
bd: c7 45 e0 01 00 00 00movl $0x1,-0x20(%rbp)
c4: c7 45 e4 02 00 00 00movl $0x2,-0x1c(%rbp)
cb: c7 45 e8 03 00 00 00movl $0x3,-0x18(%rbp)
d2: c7 45 ec 04 00 00 00movl $0x4,-0x14(%rbp)
d9: 48 8d 45 e0 lea-0x20(%rbp),%rax
dd: 48 89 c7mov%rax,%rdi
e0: e8 00 00 00 00 callq e5
e5: 90 nop
e6: 48 8b 45 f8 mov-0x8(%rbp),%rax
ea: 64 48 33 04 25 28 00xor%fs:0x28,%rax
f1: 00 00
f3: 74 05 je fa
f5: e8 00 00 00 00 callq fa
fa: c9 leaveq
fb: c3 retq
[Bug c/89113] Missed stack reuse opportunity when using compound literals
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89113 --- Comment #5 from Patrick Oppenlander --- Thanks. Sorry for the noise.
[Bug c++/92519] New: Spurious "note: ... has no user-provided default constructor"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92519
Bug ID: 92519
Summary: Spurious "note: ... has no user-provided default
constructor"
Product: gcc
Version: 9.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: patrick at motec dot com.au
Target Milestone: ---
When built with -std=c++17 the following example emits a spurious note.
Changing the lambda argument from 'auto' to 'int' no longer emits the note.
#include
void foo()
{
[](auto v) {
std::array bar;
}(42);
}
% g++ -c -std=c++17 test.cpp
In file included from warning.cpp:1:
warning.cpp: In instantiation of ‘foo():: [with auto:1 = int]’:
warning.cpp:7:6: required from here
/usr/include/c++/9.2.0/array:94:12: note: ‘struct std::array’ has no
user-provided default constructor
94 | struct array
|^
/usr/include/c++/9.2.0/array:110:56: note: and the implicitly-defined
constructor does not initialize ‘int std::array::_M_elems [3]’
110 | typename _AT_Type::_Type _M_elems;
|^~~~
% g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/9.2.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++,d --enable-shared
--enable-threads=posix --with-system-zlib --with-isl --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch
--disable-libssp --enable-gnu-unique-object --enable-linker-build-id
--enable-lto --enable-plugin --enable-install-libiberty
--with-linker-hash-style=gnu --enable-gnu-indirect-function --enable-multilib
--disable-werror --enable-checking=release --enable-default-pie
--enable-default-ssp --enable-cet=auto gdc_include_dir=/usr/include/dlang/gdc
Thread model: posix
gcc version 9.2.0 (GCC)
[Bug target/86011] Inefficient code generated for ldivmod with constant value
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86011 Patrick Oppenlander changed: What|Removed |Added Version|8.1.0 |9.2.0 --- Comment #3 from Patrick Oppenlander --- Still present in 9.2.0.
