target/arm: Implement MVE vector shift right by immediate insns
Implement the MVE vector shift right by immediate insns VSHRI and
VRSHRI. As with Neon, we implement these by using helper functions
which perform left shifts but allow negative shift counts to indicate
right shifts.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210628135835.6690-9-peter.maydell@linaro.org
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index 285c8b5..ac720c9 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -1229,6 +1229,10 @@
DO_2SHIFT(OP##b, 1, uint8_t, FN) \
DO_2SHIFT(OP##h, 2, uint16_t, FN) \
DO_2SHIFT(OP##w, 4, uint32_t, FN)
+#define DO_2SHIFT_S(OP, FN) \
+ DO_2SHIFT(OP##b, 1, int8_t, FN) \
+ DO_2SHIFT(OP##h, 2, int16_t, FN) \
+ DO_2SHIFT(OP##w, 4, int32_t, FN)
#define DO_2SHIFT_SAT_U(OP, FN) \
DO_2SHIFT_SAT(OP##b, 1, uint8_t, FN) \
@@ -1240,6 +1244,9 @@
DO_2SHIFT_SAT(OP##w, 4, int32_t, FN)
DO_2SHIFT_U(vshli_u, DO_VSHLU)
+DO_2SHIFT_S(vshli_s, DO_VSHLS)
DO_2SHIFT_SAT_U(vqshli_u, DO_UQSHL_OP)
DO_2SHIFT_SAT_S(vqshli_s, DO_SQSHL_OP)
DO_2SHIFT_SAT_S(vqshlui_s, DO_SUQSHL_OP)
+DO_2SHIFT_U(vrshli_u, DO_VRSHLU)
+DO_2SHIFT_S(vrshli_s, DO_VRSHLS)
