https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90896
Bug ID: 90896
Summary: [10 Regression] internal compiler error
indirect_ref_may_alias_decl_p
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
Target: i686
On i686, r272370 failed to build 403.gcc in SPEC CPU 2006 with LTO:
gcc -m32 -O3 -funroll-loops -msse2 -mfpmath=sse -ffast-math -fwhole-program
-flto=jobserver -fuse-linker-plugin alloca.o asprintf.o vasprintf.o
c-parse.o c-lang.o attribs.o c-errors.o c-lex.o c-pragma.o c-decl.o c-typeck.o
c-convert.o c-aux-info.o c-common.o c-format.o c-semantics.o c-objc-common.o
main.o cpplib.o cpplex.o cppmacro.o cppexp.o cppfiles.o cpphash.o cpperror.o
cppinit.o cppdefault.o line-map.o mkdeps.o prefix.o version.o mbchar.o alias.o
bb-reorder.o bitmap.o builtins.o caller-save.o calls.o cfg.o cfganal.o
cfgbuild.o cfgcleanup.o cfglayout.o cfgloop.o cfgrtl.o combine.o conflict.o
convert.o cse.o cselib.o dbxout.o debug.o dependence.o df.o diagnostic.o
doloop.o dominance.o dwarf2asm.o dwarf2out.o dwarfout.o emit-rtl.o except.o
explow.o expmed.o expr.o final.o flow.o fold-const.o function.o gcse.o genrtl.o
ggc-common.o global.o graph.o haifa-sched.o hash.o hashtable.o hooks.o ifcvt.o
insn-attrtab.o insn-emit.o insn-extract.o insn-opinit.o insn-output.o
insn-peep.o insn-recog.o integrate.o intl.o jump.o langhooks.o lcm.o lists.o
local-alloc.o loop.o obstack.o optabs.o params.o predict.o print-rtl.o
print-tree.o profile.o real.o recog.o reg-stack.o regclass.o regmove.o
regrename.o reload.o reload1.o reorg.o resource.o rtl.o rtlanal.o rtl-error.o
sbitmap.o sched-deps.o sched-ebb.o sched-rgn.o sched-vis.o sdbout.o sibcall.o
simplify-rtx.o ssa.o ssa-ccp.o ssa-dce.o stmt.o stor-layout.o stringpool.o
timevar.o toplev.o tree.o tree-dump.o tree-inline.o unroll.o varasm.o varray.o
vmsdbgout.o xcoffout.o ggc-page.o i386.o xmalloc.o xexit.o hashtab.o
safe-ctype.o splay-tree.o xstrdup.o md5.o fibheap.o xstrerror.o concat.o
partition.o hex.o lbasename.o getpwd.o ucbqsort.o -lm -o gcc
...
during RTL pass: rtl pre
reload.c: In function 'find_reloads.constprop':
reload.c:4285:1: internal compiler error: tree check: expected target_mem_ref,
have var_decl in indirect_ref_may_alias_decl_p, at tree-ssa-alias.c:1476
4285 | }
| ^
0x6dcbd7 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
../../src-trunk/gcc/tree.c:9897
0x69aa48 tree_check(tree_node*, char const*, int, char const*, tree_code)
../../src-trunk/gcc/tree.h:3197
0x69aa48 indirect_ref_may_alias_decl_p
../../src-trunk/gcc/tree-ssa-alias.c:1476
0xd6281d refs_may_alias_p_2
../../src-trunk/gcc/tree-ssa-alias.c:1758
0xd6281d refs_may_alias_p_1(ao_ref*, ao_ref*, bool)
../../src-trunk/gcc/tree-ssa-alias.c:1787
0x7e6ea8 rtx_refs_may_alias_p
../../src-trunk/gcc/alias.c:365
0x7eacfb true_dependence_1
../../src-trunk/gcc/alias.c:2976
0x9ac43a compute_transp(rtx_def const*, int, simple_bitmap_def**, bitmap_head*,
bitmap_head*, vec<modify_pair, va_heap, vl_ptr>*)
../../src-trunk/gcc/gcse-common.c:175
0x9a6c10 compute_local_properties
../../src-trunk/gcc/gcse.c:696
0x9aa5d0 compute_pre_data
../../src-trunk/gcc/gcse.c:1866
0x9aa5d0 one_pre_gcse_pass
../../src-trunk/gcc/gcse.c:2616
0x9aa5d0 execute_rtl_pre
../../src-trunk/gcc/gcse.c:4024
0x9aa5d0 execute
../../src-trunk/gcc/gcse.c:4068
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
make[4]: *** [/tmp/ccytEa9c.mk:17: /tmp/gcc.I7fAJf.ltrans5.ltrans.o] Error 1
make[4]: *** Waiting for unfinished jobs....
lto-wrapper: fatal error: make returned 2 exit status
compilation terminated.
The same thing happened with 176.gcc in SPEC CPU 2000.
