tcg: Add tcg_gen_gvec_rotrs
Add tcg expander and helper functions for rotate right
vector with scalar operand.
Signed-off-by: Nazar Kazakov <nazar.kazakov@codethink.co.uk>
Message-Id: <20230428144757.57530-10-lawrence.hunter@codethink.co.uk>
[rth: Split out of larger patch; mask rotation count.]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
diff --git a/tcg/tcg-op-gvec.c b/tcg/tcg-op-gvec.c
index 9c14908..f51bcaa 100644
--- a/tcg/tcg-op-gvec.c
+++ b/tcg/tcg-op-gvec.c
@@ -3353,6 +3353,17 @@
do_gvec_shifts(vece, dofs, aofs, shift, oprsz, maxsz, &g);
}
+void tcg_gen_gvec_rotrs(unsigned vece, uint32_t dofs, uint32_t aofs,
+ TCGv_i32 shift, uint32_t oprsz, uint32_t maxsz)
+{
+ TCGv_i32 tmp = tcg_temp_ebb_new_i32();
+
+ tcg_gen_neg_i32(tmp, shift);
+ tcg_gen_andi_i32(tmp, tmp, (8 << vece) - 1);
+ tcg_gen_gvec_rotls(vece, dofs, aofs, tmp, oprsz, maxsz);
+ tcg_temp_free_i32(tmp);
+}
+
/*
* Expand D = A << (B % element bits)
*
