2021-03-25 Bill Schmidt <wschm...@linux.ibm.com>
gcc/
* config/rs6000/rs6000-call.c (new_mma_expand_builtin):
Implement.
---
gcc/config/rs6000/rs6000-call.c | 92 +++++++++++++++++++++++++++++++++
1 file changed, 92 insertions(+)
diff --git a/gcc/config/rs6000/rs6000-call.c b/gcc/config/rs6000/rs6000-call.c
index 2d8a784a3c8..3bd6731dd13 100644
--- a/gcc/config/rs6000/rs6000-call.c
+++ b/gcc/config/rs6000/rs6000-call.c
@@ -14837,6 +14837,98 @@ stv_expand_builtin (insn_code icode, rtx *op,
static rtx
new_mma_expand_builtin (tree exp, rtx target, insn_code icode)
{
+ tree fndecl = TREE_OPERAND (CALL_EXPR_FN (exp), 0);
+ tree arg;
+ call_expr_arg_iterator iter;
+ const struct insn_operand_data *insn_op;
+ rtx op[MAX_MMA_OPERANDS];
+ unsigned nopnds = 0;
+ bool void_func = TREE_TYPE (TREE_TYPE (fndecl)) == void_type_node;
+ machine_mode tmode = VOIDmode;
+
+ if (!void_func)
+ {
+ tmode = insn_data[icode].operand[0].mode;
+ if (!target
+ || GET_MODE (target) != tmode
+ || !(*insn_data[icode].operand[0].predicate) (target, tmode))
+ target = gen_reg_rtx (tmode);
+ op[nopnds++] = target;
+ }
+ else
+ target = const0_rtx;
+
+ FOR_EACH_CALL_EXPR_ARG (arg, iter, exp)
+ {
+ if (arg == error_mark_node)
+ return const0_rtx;
+
+ rtx opnd;
+ insn_op = &insn_data[icode].operand[nopnds];
+ if (TREE_CODE (arg) == ADDR_EXPR
+ && MEM_P (DECL_RTL (TREE_OPERAND (arg, 0))))
+ opnd = DECL_RTL (TREE_OPERAND (arg, 0));
+ else
+ opnd = expand_normal (arg);
+
+ if (!(*insn_op->predicate) (opnd, insn_op->mode))
+ {
+ if (!strcmp (insn_op->constraint, "n"))
+ {
+ if (!CONST_INT_P (opnd))
+ error ("argument %d must be an unsigned literal", nopnds);
+ else
+ error ("argument %d is an unsigned literal that is "
+ "out of range", nopnds);
+ return const0_rtx;
+ }
+ opnd = copy_to_mode_reg (insn_op->mode, opnd);
+ }
+
+ /* Some MMA instructions have INOUT accumulator operands, so force
+ their target register to be the same as their input register. */
+ if (!void_func
+ && nopnds == 1
+ && !strcmp (insn_op->constraint, "0")
+ && insn_op->mode == tmode
+ && REG_P (opnd)
+ && (*insn_data[icode].operand[0].predicate) (opnd, tmode))
+ target = op[0] = opnd;
+
+ op[nopnds++] = opnd;
+ }
+
+ rtx pat;
+ switch (nopnds)
+ {
+ case 1:
+ pat = GEN_FCN (icode) (op[0]);
+ break;
+ case 2:
+ pat = GEN_FCN (icode) (op[0], op[1]);
+ break;
+ case 3:
+ pat = GEN_FCN (icode) (op[0], op[1], op[2]);
+ break;
+ case 4:
+ pat = GEN_FCN (icode) (op[0], op[1], op[2], op[3]);
+ break;
+ case 5:
+ pat = GEN_FCN (icode) (op[0], op[1], op[2], op[3], op[4]);
+ break;
+ case 6:
+ pat = GEN_FCN (icode) (op[0], op[1], op[2], op[3], op[4], op[5]);
+ break;
+ case 7:
+ pat = GEN_FCN (icode) (op[0], op[1], op[2], op[3], op[4], op[5], op[6]);
+ break;
+ default:
+ gcc_unreachable ();
+ }
+ if (!pat)
+ return NULL_RTX;
+ emit_insn (pat);
+
return target;
}
--
2.27.0
