https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97528
Bug ID: 97528
Summary: [10/11 Regression] ICE in decompose_automod_address,
at rtlanal.c:6298 (arm-linux-gnueabihf)
Product: gcc
Version: 10.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at debian dot org
Target Milestone: ---
seen on the gcc-10 branch 2020-10-11 and trunk, building firefox.
$ cat intrapred_neon.i
typedef __simd64_int16_t a;
typedef __simd64_uint16_t b;
unsigned short c;
int d;
b e;
void f() {
unsigned short *dst = &c;
int g = d, bw = 4;
b dc = e;
for (int h = 0; h < bw; h++) {
unsigned short *i = dst;
b j = dc;
__builtin_neon_vst1v4hi((__builtin_neon_hi *)i, (a)j);
dst += g;
}
}
$ gcc -o intrapred_neon.o -c -O1 -mfpu=neon intrapred_neon.i
during RTL pass: reload
/home/glandium/firefox-esr-78.4.0esr/third_party/aom/aom_dsp/arm/intrapred_neon.c:
In function 'aom_highbd_dc_predictor_4x4_neon':
/home/glandium/firefox-esr-78.4.0esr/third_party/aom/aom_dsp/arm/intrapred_neon.c:589:188:
internal compiler error: in decompose_automod_address, at rtlanal.c:6298
0x6cda45 decompose_automod_address
../../src/gcc/rtlanal.c:6298
0x6cda45 decompose_address(address_info*, rtx_def**, machine_mode, unsigned
char, rtx_code)
../../src/gcc/rtlanal.c:6463
0x6cdb19 decompose_mem_address(address_info*, rtx_def*)
../../src/gcc/rtlanal.c:6486
0x59a67b process_address_1
../../src/gcc/lra-constraints.c:3374
0x59c4cd process_address
../../src/gcc/lra-constraints.c:3648
0x59c4cd curr_insn_transform
../../src/gcc/lra-constraints.c:3963
0x5a088f lra_constraints(bool)
../../src/gcc/lra-constraints.c:5036
0x58e7a5 lra(_IO_FILE*)
../../src/gcc/lra.c:2443
0x54f331 do_reload
../../src/gcc/ira.c:5527
0x54f331 execute
../../src/gcc/ira.c:5713
Please submit a full bug report,
with preprocessed source if appropriate.
gcc-10 was configured with
--with-arch=armv7-a --with-fpu=vfpv3-d16 --with-float=hard --with-mode=thumb
--enable-checking=yes,extra,rtl
--enable-default-pie
gcc trunk was configure with --enable-checking=yes
