https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112540
Bug ID: 112540
Summary: in extract_insn, at recog.cc:2804
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
For this C code:
__imlib_BlendShapedSpanToRGB(int *dst) {
int tmp;
((unsigned char *)dst)[2] = tmp = dst;
((unsigned char *)dst)[1] = dst[1] + (tmp >> 8);
}
compiled as follows:
cvise $ ~/gcc/results/bin/gcc -w -O1 -march=znver1 -c bug980.c
cvise $ ~/gcc/results/bin/gcc -w -O2 -march=znver1 -c bug980.c
bug980.c: In function ‘__imlib_BlendShapedSpanToRGB’:
bug980.c:5:1: error: unrecognizable insn:
5 | }
| ^
(insn 26 25 12 2 (parallel [
(set (strict_low_part (reg:QI 1 dx [orig:109 dst.0_1 ] [109]))
(plus:QI (subreg:QI (zero_extract:DI (reg:QI 1 dx [orig:109
dst.0_1 ] [109])
(const_int 8 [0x8])
(const_int 8 [0x8])) 0)
(reg:QI 2 cx [115])))
(clobber (reg:CC 17 flags))
]) "bug980.c":4:29 -1
(nil))
during RTL pass: split2
bug980.c:5:1: internal compiler error: in extract_insn, at recog.cc:2804
0xe46c04 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/home/dcb38/gcc/working/gcc/../../trunk.year/gcc/rtl-error.cc:108
0xe46c2b _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/home/dcb38/gcc/working/gcc/../../trunk.year/gcc/rtl-error.cc:116
0xe00198 extract_insn(rtx_insn*)
/home/dcb38/gcc/working/gcc/../../trunk.year/gcc/recog.cc:2804
The bug first seems to occur sometime between g:6043bfbd89b335dd
from yesterday and g:081fddbbcf979022 from this morning.
There are 47 commits in this range.
