[Bug target/79565] ICE in copy_to_mode_reg, at explow.c:612

["hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79565

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 41959
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41959&action=edit
A patch

I got

[hjl@gnu-6 pr79565]$ cat x.i
typedef float a __attribute__ ((__vector_size__ (16)));
a b, d;
int __attribute__ ((__vector_size__ (2 * sizeof (int)))) c;
void e () { d = __builtin_ia32_cvtpi2ps (b, c); }
[hjl@gnu-6 pr79565]$ make x.s
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -mno-mmx -S -o x.s x.i
x.i: In function ‘e’:
x.i:4:17: error: ‘__builtin_ia32_cvtpi2ps’ needs isa option -m32 -msse -mmmx
 void e () { d = __builtin_ia32_cvtpi2ps (b, c); }
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
make: *** [Makefile:21: x.s] Error 1
[hjl@gnu-6 pr79565]$ cat y.i
typedef short v4hi __attribute__ ((__vector_size__ (4 * sizeof (short))));
v4hi a, b, c;
void
foo (void)
{
  a = __builtin_ia32_psubusw (b, c);
}
[hjl@gnu-6 pr79565]$ make y.s
/export/build/gnu/gcc/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/gcc/build-x86_64-linux/gcc/ -mno-mmx -S -o y.s y.i
y.i: In function ‘foo’:
y.i:6:7: error: ‘__builtin_ia32_psubusw’ needs isa option -m32 -mmmx
   a = __builtin_ia32_psubusw (b, c);
       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
make: *** [Makefile:21: y.s] Error 1
[hjl@gnu-6 pr79565]$