https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94461
--- Comment #1 from Zdenek Sojka <zsojka at seznam dot cz> ---
This seems to affect sse3 intrinsics as well:
$ gcc-10 testcase-min0.i -w
testcase-min0.i: In function 'foo0':
testcase-min0.i:15:1: error: unrecognizable insn:
15 | }
| ^
(insn 28 27 29 2 (set (reg:V2SI 83 [ _2 ])
(vec_concat:V2SI (minus:SI (vec_select:SI (reg:V2SI 95)
(parallel [
(const_int 0 [0])
]))
(vec_select:SI (reg:V2SI 95)
(parallel [
(const_int 1 [0x1])
])))
(minus:SI (vec_select:SI (reg:V2SI 82 [ _1 ])
(parallel [
(const_int 0 [0])
]))
(vec_select:SI (reg:V2SI 82 [ _1 ])
(parallel [
(const_int 1 [0x1])
]))))) "testcase-min0.i":14:20 -1
(nil))
during RTL pass: vregs
testcase-min0.i:15:1: internal compiler error: in extract_insn, at recog.c:2294
0x6d36a8 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
/repo/gcc-trunk/gcc/rtl-error.c:108
0x6d372b _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
/repo/gcc-trunk/gcc/rtl-error.c:116
0x6c2b11 extract_insn(rtx_insn*)
/repo/gcc-trunk/gcc/recog.c:2294
0xca6a83 instantiate_virtual_regs_in_insn
/repo/gcc-trunk/gcc/function.c:1607
0xca6a83 instantiate_virtual_regs
/repo/gcc-trunk/gcc/function.c:1977
0xca6a83 execute
/repo/gcc-trunk/gcc/function.c:2026
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ gcc-9 testcase-min0.i -w
testcase-min0.i: In function 'foo0':
testcase-min0.i:14:20: error: '__builtin_ia32_phsubd' needs isa option -mssse3
-mmmx
14 | v64s32 v64s32_3 = __builtin_ia32_psrld(__builtin_ia32_phsubd
(v64s32_2, __builtin_ia32_pandn(v64s32_1, v64s32_2)), v64s32_0);
|
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Applies at least to __builtin_ia32_psubd() and __builtin_ia32_psubb() as well.
