https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68917
Bug ID: 68917
Summary: test suite failure for builtin-bitops-1.c
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gang.chen.5i5j at gmail dot com
Target Milestone: ---
The latest gcc version introduce a new issue which has no issue before (e.g.
for gcc_5_3_0_release branch, it has no this issue).
The related file is gcc/testsuite/gcc.c-torture/execute/builtin-bitops-1.c
[root@localhost try]# /upstream/build-gcc-tile/gcc/xgcc
-B/upstream/build-gcc-tile/gcc/ builtin-bitops-1.c -fno-diagnostics-show-caret
-fdiagnostics-color=never -O0 -w -I/upstream/release-tile/usr/include
-fno-asynchronous-unwind-tables -m64 -mcpu=tilegx -mcmodel=large
-mlittle-endian -L /upstream/release-tile/lib -lm -o ./builtin-bitops-1.exe
builtin-bitops-1.c: In function 'main':
builtin-bitops-1.c:281:1: error: unrecognizable insn:
(insn 77 76 78 9 (set (subreg:DI (subreg/s/u:SI (reg:DI 82 [ _24 ]) 0) 0)
(clz:DI (reg:DI 355))) builtin-bitops-1.c:184 -1
(nil))
builtin-bitops-1.c:281:1: internal compiler error: in extract_insn, at
recog.c:2286
0x9ff4d3 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../gcc/gcc/rtl-error.c:108
0x9ff509 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../gcc/gcc/rtl-error.c:116
0x9d3741 extract_insn(rtx_insn*)
../../gcc/gcc/recog.c:2286
0x7e4073 instantiate_virtual_regs_in_insn
../../gcc/gcc/function.c:1578
0x7e4073 instantiate_virtual_regs
../../gcc/gcc/function.c:1946
0x7e4073 execute
../../gcc/gcc/function.c:1995
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
