https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93658
Bug ID: 93658
Summary: [9/10 Regression] infinite loop building ghostscript
and icu with -O3 on powerpc64le-linux-gnu
Product: gcc
Version: 9.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at ubuntu dot com
Target Milestone: ---
Created attachment 47813
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47813&action=edit
preprocessed source
seen with gcc-9 and trunk 20200204, building ghostscript and icu with -O3 on
powerpc64le-linux-gnu. Falling back to -O2 lets the build succeed, a -O3 build
on x86_64-linux-gnu succeeds.
Program received signal SIGTSTP, Stopped (user).
push_to_sequence (first=0x7ffff320d580) at ../../src/gcc/emit-rtl.c:5574
5574 ../../src/gcc/emit-rtl.c: No such file or directory.
(gdb) bt
#0 push_to_sequence (first=0x7ffff320d580) at ../../src/gcc/emit-rtl.c:5574
#1 0x0000000010843000 in process_address_1 (nop=nop@entry=0,
check_only_p=check_only_p@entry=false, before=before@entry=0x7fffffffdbf0,
after=after@entry=0x7fffffffdbe8) at ../../src/gcc/lra-constraints.c:3434
#2 0x000000001084527c in process_address (after=<optimized out>,
before=<optimized out>,
check_only_p=<optimized out>, nop=<optimized out>) at
../../src/gcc/lra-constraints.c:3637
#3 curr_insn_transform (check_only_p=check_only_p@entry=false)
at ../../src/gcc/lra-constraints.c:3952
#4 0x000000001084ad10 in lra_constraints (first_p=<optimized out>)
at ../../src/gcc/lra-constraints.c:5025
#5 0x0000000010833940 in lra (f=<optimized out>) at ../../src/gcc/lra.c:2437
#6 0x00000000107d893c in do_reload () at ../../src/gcc/ira.c:5518
#7 (anonymous namespace)::pass_reload::execute (this=<optimized out>) at
../../src/gcc/ira.c:5704
#8 0x0000000010928280 in execute_one_pass (pass=pass@entry=0x11d106f0)
at ../../src/gcc/passes.c:2500
#9 0x0000000010929314 in execute_pass_list_1 (pass=0x11d106f0) at
../../src/gcc/passes.c:2588
#10 0x000000001092932c in execute_pass_list_1 (pass=0x11d0f4f0) at
../../src/gcc/passes.c:2589
#11 0x00000000109293b8 in execute_pass_list (fn=<optimized out>,
pass=<optimized out>)
at ../../src/gcc/passes.c:2599
#12 0x00000000104f4a2c in cgraph_node::expand (this=0x7ffff6ee7d28) at
../../src/gcc/context.h:48
#13 0x00000000104f600c in expand_all_functions () at
../../src/gcc/cgraphunit.c:2454
#14 symbol_table::compile (this=this@entry=0x7ffff52f0000) at
../../src/gcc/cgraphunit.c:2804
#15 0x00000000104f8c54 in symbol_table::compile (this=0x7ffff52f0000)
at ../../src/gcc/cgraphunit.c:2984
#16 symbol_table::finalize_compilation_unit (this=0x7ffff52f0000)
at ../../src/gcc/cgraphunit.c:2984
#17 0x0000000010a321bc in compile_file () at ../../src/gcc/toplev.c:483
#18 0x0000000010187c8c in do_compile () at ../../src/gcc/toplev.c:2273
#19 toplev::main (this=0x7fffffffe6a0, argc=<optimized out>, argv=<optimized
out>)
at ../../src/gcc/toplev.c:2412
#20 0x0000000010189e78 in main (argc=<optimized out>, argv=0x7fffffffeac8)
at ../../src/gcc/main.c:39
GCC defaults to hardening options and is configured using
--enable-languages=c,c++,go,d,fortran,objc,obj-c++,m2 --prefix=/usr
--with-gcc-major-version-only --program-suffix=-10
--program-prefix=powerpc64le-linux-gnu- --enable-shared
--enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --libdir=/usr/lib --enable-nls --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object --enable-plugin
--enable-default-pie --with-system-zlib --disable-libphobos
--enable-objc-gc=auto --enable-secureplt --with-cpu=power8
--enable-targets=powerpcle-linux --disable-multilib --enable-multiarch
--disable-werror --with-long-double-128 --enable-offload-targets=nvptx-none
--without-cuda-driver --enable-checking=release --build=powerpc64le-linux-gnu
--host=powerpc64le-linux-gnu --target=powerpc64le-linux-gnu
