http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55154
Bug #: 55154
Summary: [4.8 Regression] ICE: in curr_insn_transform, at
lra-constraints.c:2702 with custom flags
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: zso...@seznam.cz
Created attachment 28584
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28584
preprocessed source
Compiler output:
$ gcc -O2 -mcx16 -fpic -mcmodel=large -fno-split-wide-types pr46254.i
/mnt/svn/gcc-trunk/gcc/testsuite/gcc.target/i386/pr46254.c: In function 'test':
/mnt/svn/gcc-trunk/gcc/testsuite/gcc.target/i386/pr46254.c:11:1: error: unable
to generate reloads for:
}
^
(insn 10 14 0 2 (parallel [
(set (subreg:DI (reg:TI 65) 0)
(unspec_volatile:DI [
(mem/v:TI (reg/f:DI 62) [-1 S16 A128])
(mem/c:DI (reg/f:DI 62) [2 i+0 S8 A128])
(mem/c:DI (plus:DI (reg/f:DI 62)
(const_int 8 [0x8])) [2 i+8 S8 A64])
(mem/c:DI (reg/f:DI 62) [2 i+0 S8 A128])
(mem/c:DI (plus:DI (reg/f:DI 62)
(const_int 8 [0x8])) [2 i+8 S8 A64])
(const_int 5 [0x5])
] UNSPECV_CMPXCHG))
(set (subreg:DI (reg:TI 65) 8)
(unspec_volatile:DI [
(const_int 0 [0])
] UNSPECV_CMPXCHG))
(set (mem/v:TI (reg/f:DI 62) [-1 S16 A128])
(unspec_volatile:TI [
(const_int 0 [0])
] UNSPECV_CMPXCHG))
(set (reg:CCZ 17 flags)
(unspec_volatile:CCZ [
(const_int 0 [0])
] UNSPECV_CMPXCHG))
(clobber (reg:DI 67))
]) /mnt/svn/gcc-trunk/gcc/testsuite/gcc.target/i386/pr46254.c:10 2063
{atomic_compare_and_swapti_doubleword}
(expr_list:REG_UNUSED (reg:DI 67)
(expr_list:REG_DEAD (reg/f:DI 62)
(expr_list:REG_DEAD (reg:TI 60 [ i.1 ])
(expr_list:REG_UNUSED (reg:TI 65)
(expr_list:REG_UNUSED (reg:TI 65)
(expr_list:REG_UNUSED (reg:CCZ 17 flags)
(nil))))))))
/mnt/svn/gcc-trunk/gcc/testsuite/gcc.target/i386/pr46254.c:11:1: internal
compiler error: in curr_insn_transform, at lra-constraints.c:2702
0x997d2a _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/mnt/svn/gcc-trunk/gcc/rtl-error.c:110
0x8dd7b9 curr_insn_transform
/mnt/svn/gcc-trunk/gcc/lra-constraints.c:2702
0x8ddf34 lra_constraints(bool)
/mnt/svn/gcc-trunk/gcc/lra-constraints.c:3404
0x8cdd1c lra(_IO_FILE*)
/mnt/svn/gcc-trunk/gcc/lra.c:2281
0x883d66 do_reload
/mnt/svn/gcc-trunk/gcc/ira.c:4624
0x883d66 rest_of_handle_reload
/mnt/svn/gcc-trunk/gcc/ira.c:4736
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.
