https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98092
Bug ID: 98092
Summary: [11 Regression] ICE in extract_insn, at recog.c:2315
(error: unrecognizable insn)
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
Target: owerpc-*-linux-gnu
gcc-11.0.0-alpha20201129 snapshot (g:bb67ad5cff58a707aaae645d4f45a913d8511c86)
ICEs when compiling the following testcase, reduced from
gcc/testsuite/gcc.target/powerpc/bcd-4.c, w/ -mcpu=power9 -ffinite-math-only:
int
h9 (__attribute__ ((altivec (vector__))) char un)
{
return (__builtin_vec_bcdinvalid (un));
}
% powerpc-e300c3-linux-gnu-gcc-11.0.0 -mcpu=power9 -ffinite-math-only -c
n1uis1ie.c
n1uis1ie.c: In function 'h9':
n1uis1ie.c:5:1: error: unrecognizable insn:
5 | }
| ^
(insn 8 7 11 2 (set (reg:SI 118 [ _3 ])
(unordered:SI (reg:CCFP 106 6)
(const_int 0 [0]))) "n1uis1ie.c":4:10 -1
(nil))
during RTL pass: vregs
n1uis1ie.c:5:1: internal compiler error: in extract_insn, at recog.c:2315
0x68050a _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201129/work/gcc-11-20201129/gcc/rtl-error.c:108
0x68052a _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201129/work/gcc-11-20201129/gcc/rtl-error.c:116
0x67ebf3 extract_insn(rtx_insn*)
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201129/work/gcc-11-20201129/gcc/recog.c:2315
0xacbbe1 instantiate_virtual_regs_in_insn
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201129/work/gcc-11-20201129/gcc/function.c:1609
0xacbbe1 instantiate_virtual_regs
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201129/work/gcc-11-20201129/gcc/function.c:1979
0xacbbe1 execute
/var/tmp/portage/cross-powerpc-e300c3-linux-gnu/gcc-11.0.0_alpha20201129/work/gcc-11-20201129/gcc/function.c:2028
