https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78788
Bug ID: 78788
Summary: [7 Regression] ICE (segfault) on s390x-linux-gnu
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
Target Milestone: ---
Created attachment 40319
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40319&action=edit
unreduced test case
seen with r243559 on s390x-linux-gnu, cc1 eats up all memory and then is
killed. works with -O1.
also seen on powerpc64le-linux-gnu.
$ gdb --args /usr/lib/gcc/s390x-linux-gnu/7/cc1 -fpreprocessed ghosts.i -quiet
-dumpbase ghosts.i -march=zEC12 -m64 -mzarch -auxbase ghosts -O2
-Wno-format-security -version -fno-aggressive-loop-optimizations
-fstack-protector-strong -Wformat -o /tmp/ccaLbok3.s
#0 sext_hwi (prec=<optimized out>, src=<optimized out>) at
../../src/gcc/hwint.h:292
#1 wide_int_storage::set_len (is_sign_extended=false, l=1, this=0x3ffffffd558)
at ../../src/gcc/wide-int.h:1090
#2 wi::mask (precision=32, negate_p=false, width=31) at
../../src/gcc/wide-int.h:3200
#3 wi::max_value (precision=precision@entry=32, sgn=sgn@entry=SIGNED)
at ../../src/gcc/wide-int.cc:326
#4 0x000000000199056e in generic_simplify_92 (loc=loc@entry=0,
type=type@entry=0x3fffd513b28,
op1=op1@entry=0x3fffc8d0408, captures=captures@entry=0x3ffffffd6a8,
cmp=cmp@entry=GE_EXPR,
op0=0x3fffc96f630) at generic-match.c:3761
#5 0x000000000199482c in generic_simplify_GE_EXPR (loc=<optimized out>,
type=type@entry=0x3fffd513b28, op0=op0@entry=0x3fffc96f630,
op1=op1@entry=0x3fffc8d0408,
code=GE_EXPR) at generic-match.c:27866
#6 0x00000000019b8d92 in generic_simplify (loc=loc@entry=0,
code=code@entry=GE_EXPR,
type=type@entry=0x3fffd513b28, op0=op0@entry=0x3fffc96f630,
op1=op1@entry=0x3fffc8d0408)
at generic-match.c:33804
#7 0x00000000013a8386 in fold_binary_loc (loc=loc@entry=0,
code=code@entry=GE_EXPR,
type=type@entry=0x3fffd513b28, op0=op0@entry=0x3fffc96f630,
op1=op1@entry=0x3fffc8d0408)
at ../../src/gcc/fold-const.c:9055
#8 0x00000000013af5e2 in fold_build2_stat_loc (loc=loc@entry=0,
code=code@entry=GE_EXPR,
type=type@entry=0x3fffd513b28, op0=op0@entry=0x3fffc96f630,
op1=op1@entry=0x3fffc8d0408)
at ../../src/gcc/fold-const.c:12183
#9 0x000000000198adbc in generic_simplify_174 (loc=loc@entry=0,
type=type@entry=0x3fffd513b28,
captures=captures@entry=0x3ffffffdd10, acmp=acmp@entry=GE_EXPR,
cmp=GT_EXPR, op1=0x3fffd501ba0,
op0=0x3fffc96f630) at generic-match.c:7226
#10 0x00000000019957a6 in generic_simplify_GT_EXPR (loc=<optimized out>,
type=type@entry=0x3fffd513b28, op0=op0@entry=0x3fffc96f630,
op1=op1@entry=0x3fffd501ba0,
code=GT_EXPR) at generic-match.c:28230
#11 0x00000000019b8dac in generic_simplify (loc=loc@entry=0,
code=code@entry=GT_EXPR,
type=type@entry=0x3fffd513b28, op0=op0@entry=0x3fffc96f630,
op1=op1@entry=0x3fffd501ba0)
at generic-match.c:33806
#12 0x00000000013a8386 in fold_binary_loc (loc=loc@entry=0,
code=code@entry=GT_EXPR,
type=type@entry=0x3fffd513b28, op0=op0@entry=0x3fffc96f630,
op1=op1@entry=0x3fffd501ba0)
at ../../src/gcc/fold-const.c:9055
#13 0x00000000013af5e2 in fold_build2_stat_loc (loc=<optimized out>,
code=<optimized out>,
type=0x3fffd513b28, op0=0x3fffc96f630, op1=0x3fffd501ba0) at
../../src/gcc/fold-const.c:12183
#14 0x00000000013a833c in fold_binary_loc (loc=loc@entry=0, code=LT_EXPR,
type=0x3fffd513b28,
op0=op0@entry=0x3fffd501ba0, op1=op1@entry=0x3fffc96f630) at
../../src/gcc/fold-const.c:9053
#15 0x00000000013bd2ee in fold_binary_to_constant (code=code@entry=LT_EXPR,
type=<optimized out>,
op0=op0@entry=0x3fffd501ba0, op1=op1@entry=0x3fffc96f630) at
../../src/gcc/fold-const.c:13533
#16 0x000000000183fb7e in operand_less_p (val=0x3fffd501ba0,
val2=0x3fffc96f630)
at ../../src/gcc/tree-vrp.c:1187
#17 0x000000000184461e in intersect_ranges (vr1max=0x3fffd501bb8,
vr1min=0x3fffd501ba0,
vr1type=VR_RANGE, vr0max=0x3ffffffe8b8, vr0min=0x3ffffffe8b0,
vr0type=0x3ffffffe8a8)
at ../../src/gcc/tree-vrp.c:8536
#18 vrp_intersect_ranges_1 (vr1=0x3ffffffe788, vr0=0x3ffffffe8a8) at
../../src/gcc/tree-vrp.c:8653
#19 vrp_intersect_ranges (vr0=0x3ffffffe8a8, vr1=0x3ffffffe788) at
../../src/gcc/tree-vrp.c:8691
#20 0x0000000001844c3e in update_value_range (var=0x3fffc85ff78,
new_vr=0x3ffffffe8a8)
at ../../src/gcc/tree-vrp.c:802
#21 0x0000000001854928 in vrp_visit_phi_node (phi=<optimized out>) at
../../src/gcc/tree-vrp.c:9024
#22 0x0000000001785042 in simulate_stmt (stmt=stmt@entry=0x3fffc85ab00)
#23 0x0000000001786174 in process_ssa_edge_worklist () at
../../src/gcc/tree-ssa-propagate.c:341
#24 ssa_propagate (visit_stmt=visit_stmt@entry=0x1857b50
<vrp_visit_stmt(gimple*, edge*, tree*)>,
visit_phi=visit_phi@entry=0x18548f8 <vrp_visit_phi_node(gphi*)>)
at ../../src/gcc/tree-ssa-propagate.c:813
#25 0x000000000184e714 in execute_vrp (warn_array_bounds_p=false) at
../../src/gcc/tree-vrp.c:11247
#26 (anonymous namespace)::pass_vrp::execute (this=<optimized out>) at
../../src/gcc/tree-vrp.c:11334
#27 0x000000000156c8f6 in execute_one_pass (pass=pass@entry=0x212ac50) at
../../src/gcc/passes.c:2370
#28 0x000000000156cf82 in execute_pass_list_1 (pass=0x212ac50) at
../../src/gcc/passes.c:2459
#29 0x000000000156cf9e in execute_pass_list_1 (pass=0x212a6f0) at
../../src/gcc/passes.c:2460
#30 0x000000000156cff2 in execute_pass_list (fn=<optimized out>,
pass=<optimized out>)
at ../../src/gcc/passes.c:2470
#31 0x00000000012bc33a in cgraph_node::expand (this=this@entry=0x3fffd1f3730)
at ../../src/gcc/cgraphunit.c:2001
#32 0x00000000012bd7c0 in expand_all_functions () at
../../src/gcc/cgraphunit.c:2137
#33 symbol_table::compile (this=this@entry=0x3fffd505000) at
../../src/gcc/cgraphunit.c:2494
#34 0x00000000012bf672 in symbol_table::compile (this=0x3fffd505000)
at ../../src/gcc/cgraphunit.c:2587
#35 symbol_table::finalize_compilation_unit (this=0x3fffd505000) at
../../src/gcc/cgraphunit.c:2584
#36 0x0000000001633cf4 in compile_file () at ../../src/gcc/toplev.c:488
#37 0x000000000117f5ce in do_compile () at ../../src/gcc/toplev.c:1983
#38 toplev::main (this=this@entry=0x3fffffff27e, argc=<optimized out>,
argc@entry=19,
argv=<optimized out>, argv@entry=0x3fffffff4a8) at
../../src/gcc/toplev.c:2117
#39 0x0000000001180fb8 in main (argc=<optimized out>, argv=0x3fffffff4a8) at
../../src/gcc/main.c:39
