https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110800
Bug ID: 110800
Summary: [gcn] ICE (segfault) 'during RTL pass: jump' in
delete_trivially_dead_insns -> count_reg_usage
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
CC: grahams at gcc dot gnu.org
Target Milestone: ---
Target: amdgcn-amdhsa
Testcase is test_target_PureVirDestr.cpp at
https://github.com/SOLLVE/sollve_vv/pull/751
Simply go to any sollve_vv directory, run "wget" on
https://raw.githubusercontent.com/SOLLVE/sollve_vv/a3be96d534124e744acc979e2e33b402a1b330cd/tests/5.2/unified_shared_mem/test_target_PureVirDestr.cpp
And then compile, e.g. as follows. (Tested with mainline; comments in the pull
request indicate that OG13 fails identically.)
g++ -foffload-options=-march=gfx90a -fopenmp -I ompvv/ -DVERBOSE_MODE=1
test_target_PureVirDestr.cpp
The segfault happens for:
#0 0x00000000019175cc in count_reg_usage (x=<optimized out>, counts=0x2e618e0,
dest=<optimized out>, incr=1) at gcc/rtl.h:1934
1934 return REG_CHECK (x)->regno;
which is called (same function) as
1511 return XEXP (insn, 3);
which is called in
#2 0x000000000191c86b in delete_trivially_dead_insns (insns=<optimized out>,
nreg=514) at gcc/cse.cc:7012
7012 count_reg_usage (insn, counts, NULL_RTX, 1);
(gdb) p debug_rtx(insn)
(insn 132 133 119 7 (set (reg:DI 508)
(reg:DI -1)) "test_target_PureVirDestr.cpp":57:5 8 {*movdi_insn}
(nil))
The ICE is:
during RTL pass: jump
test_target_PureVirDestr.cpp: In member function '__ct_base ':
test_target_PureVirDestr.cpp:57:5: internal compiler error: Segmentation fault
57 | }
| ^
0x101ad9f crash_signal gcc/toplev.cc:314
0x7f463959408f ??? sysv/linux/x86_64/sigaction.c:0
0x19175cc count_reg_usage gcc/cse.cc:6748
0x19173ea count_reg_usage gcc/cse.cc:6788
0x191c86a delete_trivially_dead_insns(rtx_insn*, int)
gcc/cse.cc:7012
0x18dc5c6 execute gcc/cfgcleanup.cc:3237
...
gcn mkoffload: fatal error:
../../install/bin/x86_64-none-linux-gnu-accel-amdgcn-amdhsa-gcc returned 1 exit
status
compilation terminated.
lto-wrapper: fatal error:
.../install/libexec/gcc/x86_64-none-linux-gnu/14.0.0//accel/amdgcn-amdhsa/mkoffload
returned 1 exit status
