https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61411
Bug ID: 61411
Summary: [NEON] ICE in reload_cse_simplify_operands, at
postreload.c:411
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: cbaylis at gcc dot gnu.org
Target: aarch64-oe-linux
Created attachment 32890
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32890&action=edit
Reduced test case
The attached test case results in an ICE when compiled with gcc 4.9
$ aarch64-oe-linux-gcc -O3 -c test.c
test.c: In function ‘vp9_idct16x16_256_add_neon_pass2’:
test.c:126:1: error: insn does not satisfy its constraints:
}
^
(insn 198 110 159 2 (set (reg:V8QI 37 v5 [orig:118 D.16400 ] [118])
(mem:V8QI (plus:DI (reg/v/f:DI 20 x20 [orig:202 dest ] [202])
(reg:DI 8 x8 [340])) [2 MEM[(const int64_t *)dest_44]+0 S8
A64]))
/home/cbaylis/tools/tools-aarch64-oe-linux-4.9/lib/gcc/aarch64-oe-linux/4.9.1/include/arm_neon.h:3646
735 {*aarch64_simd_movv8qi}
(nil))
test.c:126:1: internal compiler error: in reload_cse_simplify_operands, at
postreload.c:411
0x7fc47a _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/cbaylis/srcarea/gcc/gcc-4_9-branch/gcc/rtl-error.c:109
0x7fc49f _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/cbaylis/srcarea/gcc/gcc-4_9-branch/gcc/rtl-error.c:120
0x7bdbd9 reload_cse_simplify_operands
/home/cbaylis/srcarea/gcc/gcc-4_9-branch/gcc/postreload.c:411
0x7bf69c reload_cse_simplify
/home/cbaylis/srcarea/gcc/gcc-4_9-branch/gcc/postreload.c:181
0x7bf69c reload_cse_regs_1
/home/cbaylis/srcarea/gcc/gcc-4_9-branch/gcc/postreload.c:220
0x7bfa8b reload_cse_regs
/home/cbaylis/srcarea/gcc/gcc-4_9-branch/gcc/postreload.c:68
0x7bfa8b rest_of_handle_postreload
/home/cbaylis/srcarea/gcc/gcc-4_9-branch/gcc/postreload.c:2332
0x7bfa8b execute
/home/cbaylis/srcarea/gcc/gcc-4_9-branch/gcc/postreload.c:2368
There is a patch which appears to fix this problem at
https://gcc.gnu.org/ml/gcc-patches/2014-05/msg02397.html
