tcg: Implement gvec support for rotate by immediate
No host backend support yet, but the interfaces for rotli
are in place. Canonicalize immediate rotate to the left,
based on a survey of architectures, but provide both left
and right shift interfaces to the translators.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
diff --git a/tcg/tcg-op-vec.c b/tcg/tcg-op-vec.c
index b6937e8..660ad9b 100644
--- a/tcg/tcg-op-vec.c
+++ b/tcg/tcg-op-vec.c
@@ -545,6 +545,18 @@
do_shifti(INDEX_op_sari_vec, vece, r, a, i);
}
+void tcg_gen_rotli_vec(unsigned vece, TCGv_vec r, TCGv_vec a, int64_t i)
+{
+ do_shifti(INDEX_op_rotli_vec, vece, r, a, i);
+}
+
+void tcg_gen_rotri_vec(unsigned vece, TCGv_vec r, TCGv_vec a, int64_t i)
+{
+ int bits = 8 << vece;
+ tcg_debug_assert(i >= 0 && i < bits);
+ do_shifti(INDEX_op_rotli_vec, vece, r, a, -i & (bits - 1));
+}
+
void tcg_gen_cmp_vec(TCGCond cond, unsigned vece,
TCGv_vec r, TCGv_vec a, TCGv_vec b)
{
