https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109073
Bug ID: 109073
Summary: __builtin_vsx_lxvp() doesn't allow a const
__vector_pair * operand in GCC 11 & 10
Product: gcc
Version: 11.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: bergner at gcc dot gnu.org
Target Milestone: ---
On GCC 11 and GCC 10, we error on the following test case which GCC 12 and
trunk accept with no errors:
bergner@ltcden2$ cat t.cc
void
foo (void *dst, const __vector_pair *src)
{
__vector_pair pair = __builtin_vsx_lxvp(0L, src);
__builtin_vsx_disassemble_pair(dst, &pair);
}
bergner@ltcden2$ g++ -S -O2 -mcpu=power10 t.cc
t.cc: In function ‘void foo(void*, const __vector_pair*)’:
t.cc:4:47: error: invalid conversion from ‘const __vector_pair*’ to
‘__vector_pair*’ [-fpermissive]
4 | __vector_pair pair = __builtin_vsx_lxvp(0L, src);
| ^~~
| |
| const __vector_pair*
<built-in>: note: initializing argument 2 of ‘__vector_pair
__builtin_vsx_lxvp(sizetype, __vector_pair*)’
This was "fixed" in GCC 12 with Bill's rs6000 built-in rewrite, which we don't
want to backport. I have a smaller fix which can be backported that I am
testing. The same problem affects the __builtin_vsx_stxvp() and
__builtin_vsx_disassemble_pair() and __builtin_mma_disassemble_acc() builtins.
