https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111746
Bug ID: 111746
Summary: [14 Regression] ICE: infinite recursion in try_split
(emit-rtl.cc:3972) at -O2
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: build, ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: zsojka at seznam dot cz
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: powerpc64le-unknown-linux-gnu
Created attachment 56084
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56084&action=edit
reduced testcase
This currently breaks build for me.
Compiler output:
$ $ gdb -q --args /repo/build-gcc-trunk-powerpc64le/gcc/cc1 -O2 testcase.c
-quiet
Reading symbols from /repo/build-gcc-trunk-powerpc64le/gcc/cc1...
r
(gdb) r
Starting program: /repo/build-gcc-trunk-powerpc64le/gcc/cc1 -O2 testcase.c
-quiet
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Program received signal SIGSEGV, Segmentation fault.
0x0000000000a8a6cf in base_pool_allocator<memory_block_pool>::allocate
(this=0x29547a0) at /repo/gcc-trunk/gcc/alloc-pool.h:405
405 VALGRIND_DISCARD (VALGRIND_MAKE_MEM_NOACCESS (header,size));
(gdb) bt
#0 0x0000000000a8a6cf in base_pool_allocator<memory_block_pool>::allocate
(this=0x29547a0) at /repo/gcc-trunk/gcc/alloc-pool.h:405
#1 0x0000000000b9d336 in object_allocator<df_regular_ref>::allocate
(this=<optimized out>) at /repo/gcc-trunk/gcc/alloc-pool.h:505
#2 df_ref_create_structure (cl=DF_REF_REGULAR, collection_rec=0x7ffffbfff330,
reg=0x7ffff1a40000, loc=0x7ffff1a40040, bb=<optimized out>, info=0x7355df0,
ref_type=DF_REF_REG_USE,
ref_flags=0) at /repo/gcc-trunk/gcc/df-scan.cc:2498
#3 0x0000000000b9e8a7 in df_uses_record
(collection_rec=collection_rec@entry=0x7ffffbfff330, loc=<optimized out>,
loc@entry=0x7ffff1a40040, ref_type=ref_type@entry=DF_REF_REG_USE,
bb=bb@entry=0x7ffff7433960, insn_info=insn_info@entry=0x7355df0,
flags=flags@entry=0) at /repo/gcc-trunk/gcc/df-scan.cc:2874
#4 0x0000000000b9e949 in df_uses_record
(collection_rec=collection_rec@entry=0x7ffffbfff330, loc=<optimized out>,
ref_type=ref_type@entry=DF_REF_REG_USE, bb=bb@entry=0x7ffff7433960,
insn_info=insn_info@entry=0x7355df0, flags=<optimized out>, flags@entry=0)
at /repo/gcc-trunk/gcc/df-scan.cc:2906
#5 0x0000000000b9f3a2 in df_insn_refs_collect (collection_rec=0x7ffffbfff330,
bb=0x7ffff7433960, insn_info=0x7355df0) at /repo/gcc-trunk/gcc/df-scan.cc:3229
#6 0x0000000000b9fe01 in df_insn_rescan (insn=insn@entry=0x7ffff1a3f600) at
/repo/gcc-trunk/gcc/df-scan.cc:1087
#7 0x0000000000c1fa80 in emit_insn_after_1 (bb=<optimized out>,
after=0x7ffff1a3f540, first=0x7ffff1a3f5c0) at
/repo/gcc-trunk/gcc/emit-rtl.cc:4614
#8 emit_pattern_after_noloc (x=x@entry=0x7ffff1a3f5c0,
after=after@entry=0x7ffff1a3f540, bb=bb@entry=0x0,
make_raw=make_raw@entry=0xc1a4d0 <make_insn_raw(rtx_def*)>)
at /repo/gcc-trunk/gcc/emit-rtl.cc:4657
#9 0x0000000000c1fb9a in emit_pattern_after_setloc
(pattern=pattern@entry=0x7ffff1a3f5c0, after=after@entry=0x7ffff1a3f540,
loc=2147483668,
make_raw=make_raw@entry=0xc1a4d0 <make_insn_raw(rtx_def*)>) at
/repo/gcc-trunk/gcc/emit-rtl.cc:4808
#10 0x0000000000c20556 in emit_insn_after_setloc (loc=<optimized out>,
after=0x7ffff1a3f540, pattern=0x7ffff1a3f5c0) at
/repo/gcc-trunk/gcc/emit-rtl.cc:4852
#11 try_split (pat=<optimized out>, trial=0x7ffff1a3f540, last=last@entry=1) at
/repo/gcc-trunk/gcc/emit-rtl.cc:3961
#12 0x0000000000c206a5 in try_split (pat=<optimized out>, trial=0x7ffff1a3f4c0,
last=last@entry=1) at /repo/gcc-trunk/gcc/emit-rtl.cc:3972
#13 0x0000000000c206a5 in try_split (pat=<optimized out>, trial=0x7ffff1a3f440,
last=last@entry=1) at /repo/gcc-trunk/gcc/emit-rtl.cc:3972
#14 0x0000000000c206a5 in try_split (pat=<optimized out>, trial=0x7ffff1a3f3c0,
last=last@entry=1) at /repo/gcc-trunk/gcc/emit-rtl.cc:3972
#15 0x0000000000c206a5 in try_split (pat=<optimized out>, trial=0x7ffff1a3f340,
last=last@entry=1) at /repo/gcc-trunk/gcc/emit-rtl.cc:3972
#16 0x0000000000c206a5 in try_split (pat=<optimized out>, trial=0x7ffff1a3f2c0,
last=last@entry=1) at /repo/gcc-trunk/gcc/emit-rtl.cc:3972
#17 0x0000000000c206a5 in try_split (pat=<optimized out>, trial=0x7ffff1a3f240,
last=last@entry=1) at /repo/gcc-trunk/gcc/emit-rtl.cc:3972
#18 0x0000000000c206a5 in try_split (pat=<optimized out>, trial=0x7ffff1a3f1c0,
last=last@entry=1) at /repo/gcc-trunk/gcc/emit-rtl.cc:3972
#19 0x0000000000c206a5 in try_split (pat=<optimized out>, trial=0x7ffff1a3f140,
last=last@entry=1) at /repo/gcc-trunk/gcc/emit-rtl.cc:3972
#20 0x0000000000c206a5 in try_split (pat=<optimized out>, trial=0x7ffff1a3f0c0,
last=last@entry=1) at /repo/gcc-trunk/gcc/emit-rtl.cc:3972
#21 0x0000000000c206a5 in try_split (pat=<optimized out>, trial=0x7ffff1a3f040,
last=last@entry=1) at /repo/gcc-trunk/gcc/emit-rtl.cc:3972
...
$ /repo/build-gcc-trunk-powerpc64le/./gcc/xgcc -v
Using built-in specs.
COLLECT_GCC=/repo/build-gcc-trunk-powerpc64le/./gcc/xgcc
Target: powerpc64le-unknown-linux-gnu
Configured with: /repo/gcc-trunk//configure --enable-languages=c,c++
--enable-valgrind-annotations --disable-nls --enable-checking=yes,rtl,df,extra
--with-cloog --with-ppl --with-isl
--with-sysroot=/usr/powerpc64le-unknown-linux-gnu --build=x86_64-pc-linux-gnu
--host=x86_64-pc-linux-gnu --target=powerpc64le-unknown-linux-gnu
--with-ld=/usr/bin/powerpc64le-unknown-linux-gnu-ld
--with-as=/usr/bin/powerpc64le-unknown-linux-gnu-as --disable-libstdcxx-pch
--prefix=/repo/gcc-trunk//binary-trunk-r14-4520-20231009121517-gb0892b1fc63-checking-yes-rtl-df-extra-powerpc64le
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231009 (experimental) (GCC)
The build breaks at:
$ make
/bin/sh ../libtool --tag CC --tag disable-shared --mode=compile
/repo/build-gcc-trunk-powerpc64le/./gcc/xgcc
-B/repo/build-gcc-trunk-powerpc64le/./gcc/
-B/repo/gcc-trunk//binary-trunk-r14-4520-20231009121517-gb0892b1fc63-checking-yes-rtl-df-extra-powerpc64le/powerpc64le-unknown-linux-gnu/bin/
-B/repo/gcc-trunk//binary-trunk-r14-4520-20231009121517-gb0892b1fc63-checking-yes-rtl-df-extra-powerpc64le/powerpc64le-unknown-linux-gnu/lib/
-isystem
/repo/gcc-trunk//binary-trunk-r14-4520-20231009121517-gb0892b1fc63-checking-yes-rtl-df-extra-powerpc64le/powerpc64le-unknown-linux-gnu/include
-isystem
/repo/gcc-trunk//binary-trunk-r14-4520-20231009121517-gb0892b1fc63-checking-yes-rtl-df-extra-powerpc64le/powerpc64le-unknown-linux-gnu/sys-include
-DHAVE_CONFIG_H -I.. -I/repo/gcc-trunk/libstdc++-v3/../libiberty
-I/repo/gcc-trunk/libstdc++-v3/../include -prefer-pic -D_GLIBCXX_SHARED
-I/repo/build-gcc-trunk-powerpc64le/powerpc64le-unknown-linux-gnu/libstdc++-v3/include/powerpc64le-unknown-linux-gnu
-I/repo/build-gcc-trunk-powerpc64le/powerpc64le-unknown-linux-gnu/libstdc++-v3/include
-I/repo/gcc-trunk/libstdc++-v3/libsupc++ -g -O2 -DIN_GLIBCPP_V3 -Wno-error
-c cp-demangle.c
libtool: compile: /repo/build-gcc-trunk-powerpc64le/./gcc/xgcc
-B/repo/build-gcc-trunk-powerpc64le/./gcc/
-B/repo/gcc-trunk//binary-trunk-r14-4520-20231009121517-gb0892b1fc63-checking-yes-rtl-df-extra-powerpc64le/powerpc64le-unknown-linux-gnu/bin/
-B/repo/gcc-trunk//binary-trunk-r14-4520-20231009121517-gb0892b1fc63-checking-yes-rtl-df-extra-powerpc64le/powerpc64le-unknown-linux-gnu/lib/
-isystem
/repo/gcc-trunk//binary-trunk-r14-4520-20231009121517-gb0892b1fc63-checking-yes-rtl-df-extra-powerpc64le/powerpc64le-unknown-linux-gnu/include
-isystem
/repo/gcc-trunk//binary-trunk-r14-4520-20231009121517-gb0892b1fc63-checking-yes-rtl-df-extra-powerpc64le/powerpc64le-unknown-linux-gnu/sys-include
-DHAVE_CONFIG_H -I.. -I/repo/gcc-trunk/libstdc++-v3/../libiberty
-I/repo/gcc-trunk/libstdc++-v3/../include -D_GLIBCXX_SHARED
-I/repo/build-gcc-trunk-powerpc64le/powerpc64le-unknown-linux-gnu/libstdc++-v3/include/powerpc64le-unknown-linux-gnu
-I/repo/build-gcc-trunk-powerpc64le/powerpc64le-unknown-linux-gnu/libstdc++-v3/include
-I/repo/gcc-trunk/libstdc++-v3/libsupc++ -g -O2 -DIN_GLIBCPP_V3 -Wno-error -c
cp-demangle.c -fPIC -DPIC -o cp-demangle.o
xgcc: internal compiler error: Segmentation fault signal terminated program cc1
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
See <https://gcc.gnu.org/bugs/> for instructions.
make: *** [Makefile:970: cp-demangle.lo] Error 1
