When the two arguments are identical, this can be reduced to
dup_vec or to mov_vec from a tcg_constant_vec.
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
tcg/optimize.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/tcg/optimize.c b/tcg/optimize.c
index 53aa8e5329..220f4601d5 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -1109,6 +1109,21 @@ void tcg_optimize(TCGContext *s)
}
goto do_default;
+ case INDEX_op_dup2_vec:
+ assert(TCG_TARGET_REG_BITS == 32);
+ if (arg_is_const(op->args[1]) && arg_is_const(op->args[2])) {
+ tmp = arg_info(op->args[1])->val;
+ if (tmp == arg_info(op->args[2])->val) {
+ tcg_opt_gen_movi(s, op, op->args[0], tmp);
+ break;
+ }
+ } else if (args_are_copies(op->args[1], op->args[2])) {
+ op->opc = INDEX_op_dup_vec;
+ TCGOP_VECE(op) = MO_32;
+ nb_iargs = 1;
+ }
+ goto do_default;
+
CASE_OP_32_64(not):
CASE_OP_32_64(neg):
CASE_OP_32_64(ext8s):
--
2.25.1
