target/arm: Implement MVE VMAX, VMIN

Implement the MVE VMAX and VMIN insns.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210617121628.20116-16-peter.maydell@linaro.org

4 files changed, 37 insertions, 0 deletions

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index 0e496971f0..5181d3b941 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -95,3 +95,17 @@ DEF_HELPER_FLAGS_4(mve_vrmulhsw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vrmulhub, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vrmulhuh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vrmulhuw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
+DEF_HELPER_FLAGS_4(mve_vmaxsb, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vmaxsh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vmaxsw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vmaxub, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vmaxuh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vmaxuw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
+DEF_HELPER_FLAGS_4(mve_vminsb, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vminsh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vminsw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vminub, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vminuh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vminuw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index 4ab6c9dba9..42d5504500 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -88,6 +88,11 @@ VMULH_U          111 1 1110 0 . .. ...1 ... 0 1110 . 0 . 0 ... 1 @2op
 VRMULH_S         111 0 1110 0 . .. ...1 ... 1 1110 . 0 . 0 ... 1 @2op
 VRMULH_U         111 1 1110 0 . .. ...1 ... 1 1110 . 0 . 0 ... 1 @2op
 
+VMAX_S           111 0 1111 0 . .. ... 0 ... 0 0110 . 1 . 0 ... 0 @2op
+VMAX_U           111 1 1111 0 . .. ... 0 ... 0 0110 . 1 . 0 ... 0 @2op
+VMIN_S           111 0 1111 0 . .. ... 0 ... 0 0110 . 1 . 1 ... 0 @2op
+VMIN_U           111 1 1111 0 . .. ... 0 ... 0 0110 . 1 . 1 ... 0 @2op
+
 # Vector miscellaneous
 
 VCLS             1111 1111 1 . 11 .. 00 ... 0 0100 01 . 0 ... 0 @1op
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index 6cd47d3458..c040e42bda 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -343,6 +343,12 @@ DO_1OP(vfnegs, 8, uint64_t, DO_FNEGS)
     DO_2OP(OP##h, 2, uint16_t, FN)              \
     DO_2OP(OP##w, 4, uint32_t, FN)
 
+/* provide signed 2-op helpers for all sizes */
+#define DO_2OP_S(OP, FN)                        \
+    DO_2OP(OP##b, 1, int8_t, FN)                \
+    DO_2OP(OP##h, 2, int16_t, FN)               \
+    DO_2OP(OP##w, 4, int32_t, FN)
+
 #define DO_AND(N, M)  ((N) & (M))
 #define DO_BIC(N, M)  ((N) & ~(M))
 #define DO_ORR(N, M)  ((N) | (M))
@@ -410,3 +416,11 @@ DO_2OP(vrmulhsw, 4, int32_t, do_rmulh_w)
 DO_2OP(vrmulhub, 1, uint8_t, do_rmulh_b)
 DO_2OP(vrmulhuh, 2, uint16_t, do_rmulh_h)
 DO_2OP(vrmulhuw, 4, uint32_t, do_rmulh_w)
+
+#define DO_MAX(N, M)  ((N) >= (M) ? (N) : (M))
+#define DO_MIN(N, M)  ((N) >= (M) ? (M) : (N))
+
+DO_2OP_S(vmaxs, DO_MAX)
+DO_2OP_U(vmaxu, DO_MAX)
+DO_2OP_S(vmins, DO_MIN)
+DO_2OP_U(vminu, DO_MIN)
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index bc66058fd3..107c393a99 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -351,3 +351,7 @@ DO_2OP(VMULH_S, vmulhs)
 DO_2OP(VMULH_U, vmulhu)
 DO_2OP(VRMULH_S, vrmulhs)
 DO_2OP(VRMULH_U, vrmulhu)
+DO_2OP(VMAX_S, vmaxs)
+DO_2OP(VMAX_U, vmaxu)
+DO_2OP(VMIN_S, vmins)
+DO_2OP(VMIN_U, vminu)