https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70420
Eric Gallager <egallager at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
CC| |egallager at gcc dot gnu.org
--- Comment #4 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #1)
> Please provide preprocessed source of the file and the compiler command with
> -v
> appended so we can see what -mtune/-march expands to.
Reporter has since provided these.
(In reply to Seth Junot from comment #2)
> Created attachment 38124 [details]
> Preprocessed file during libquadmath compilation
Compiling this with trunk I get:
$ /usr/local/bin/gcc -DHAVE_CONFIG_H -I. -g -O2 -v -save-temps -march=native
-mtune=native -mfpmath=sse -m32 -MT math/rem_pio2q.lo -MD -MP -MF
math/.deps/rem_pio2q.Tpo -c rem_pio2q.i
Using built-in specs.
COLLECT_GCC=/usr/local/bin/gcc
Target: i386-apple-darwin9.8.0
Configured with: ../configure --disable-werror --disable-werror-always
--enable-languages=c,c++,lto,objc,obj-c++ --enable-stage1-checking=release,rtl
-C --with-system-libunwind --enable-secureplt --enable-frame-pointer
--enable-debug --with-isl --disable-host-shared --enable-maintainer-mode
--disable-default-pie --with-ld64 --without-pic --enable-target-optspace
CC=/usr/local/bin/gcc CXX=/usr/local/bin/g++ AUTOCONF=/usr/local/bin/autoconf
AUTOHEADER=/usr/local/bin/autoheader AUTORECONF=/usr/local/bin/autoreconf
AUTOM4TE=/usr/local/bin/autom4te AUTOSCAN=/usr/local/bin/autoscan
AUTOUPDATE=/usr/local/bin/autoupdate IFNAMES=/usr/local/bin/ifnames
Thread model: posix
gcc version 8.0.0 20170702 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-D' 'HAVE_CONFIG_H' '-I' '.' '-g' '-O2' '-v' '-save-temps'
'-march=native' '-mtune=native' '-mfpmath=sse' '-m32' '-MT' 'math/rem_pio2q.lo'
'-MD' '-MP' '-MF' 'math/.deps/rem_pio2q.Tpo' '-c' '-mmacosx-version-min=10.5.8'
'-asm_macosx_version_min=10.5'
/usr/local/libexec/gcc/i386-apple-darwin9.8.0/8.0.0/cc1 -fpreprocessed
rem_pio2q.i -march=core2 -mmmx -mno-3dnow -msse -msse2 -msse3 -mssse3
-mno-sse4a -mcx16 -msahf -mno-movbe -mno-aes -mno-sha -mno-pclmul -mno-popcnt
-mno-abm -mno-lwp -mno-fma -mno-fma4 -mno-xop -mno-bmi -mno-sgx -mno-bmi2
-mno-tbm -mno-avx -mno-avx2 -mno-sse4.2 -msse4.1 -mno-lzcnt -mno-rtm -mno-hle
-mno-rdrnd -mno-f16c -mno-fsgsbase -mno-rdseed -mno-prfchw -mno-adx -mfxsr
-mno-xsave -mno-xsaveopt -mno-avx512f -mno-avx512er -mno-avx512cd -mno-avx512pf
-mno-prefetchwt1 -mno-clflushopt -mno-xsavec -mno-xsaves -mno-avx512dq
-mno-avx512bw -mno-avx512vl -mno-avx512ifma -mno-avx512vbmi -mno-avx5124fmaps
-mno-avx5124vnniw -mno-clwb -mno-mwaitx -mno-clzero -mno-pku -mno-rdpid --param
l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=3072
-mtune=core2 -fPIC -feliminate-unused-debug-symbols -quiet -dumpbase
rem_pio2q.i -mfpmath=sse -m32 -mmacosx-version-min=10.5.8 -auxbase rem_pio2q -g
-O2 -version -o rem_pio2q.s
GNU C11 (GCC) version 8.0.0 20170702 (experimental) (i386-apple-darwin9.8.0)
compiled by GNU C version 8.0.0 20170702 (experimental), GMP version
6.1.0, MPFR version 3.1.4, MPC version 1.0.3, isl version isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C11 (GCC) version 8.0.0 20170702 (experimental) (i386-apple-darwin9.8.0)
compiled by GNU C version 8.0.0 20170702 (experimental), GMP version
6.1.0, MPFR version 3.1.4, MPC version 1.0.3, isl version isl-0.16.1-GMP
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 5b4c68354b33780d2d34c743d42b6977
during RTL pass: split2
../../../libquadmath/math/rem_pio2q.c: In function ‘__quadmath_rem_pio2q’:
../../../libquadmath/math/rem_pio2q.c:587:1: internal compiler error: in
gen_reg_rtx, at emit-rtl.c:1026
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
For a backtrace I get:
Breakpoint 3, 0x00e085f4 in internal_error ()
(gdb) bt
#0 0x00e085f4 in internal_error ()
warning: .o file
"/private/var/root/gcc-git/my_oddly_named_builddir/./mpfr/src/.libs/libmpfr.a(mpfr-gmp.o)"
more recent than executable timestamp
#1 0x014e4227 in fancy_abort ()
#2 0x013eb932 in __cold_sect_of___Z11gen_reg_rtx12machine_mode ()
#3 0x00305cd2 in gen_split_374 ()
#4 0x00435c11 in split_9 ()
#5 0x005fd4c6 in try_split ()
#6 0x00989990 in split_insn ()
#7 0x0098ed75 in split_all_insns ()
#8 0x0098ee2b in (anonymous namespace)::pass_split_after_reload::execute ()
#9 0x00946770 in execute_one_pass ()
#10 0x009470d9 in execute_pass_list_1 ()
#11 0x00947105 in execute_pass_list_1 ()
#12 0x00947105 in execute_pass_list_1 ()
#13 0x0094712e in execute_pass_list ()
#14 0x0051174a in cgraph_node::expand ()
#15 0x00512c5e in symbol_table::compile ()
#16 0x005151d8 in symbol_table::finalize_compilation_unit ()
#17 0x00a41d9a in compile_file ()
#18 0x01853760 in toplev::main ()
#19 0x01854d74 in main ()
I'll have to rebuild GCC with debug info to get a better backtrace. In the
meantime, I'm confirming this bug.
