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target/arm: Implement MVE VMULL 

Implement the MVE VMULL insn, which multiplies two single
width integer elements to produce a double width result.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210617121628.20116-19-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2021-06-17 13:16:02 +01:00
parent abc48e310c
commit ac6ad1dca8
4 changed files with 57 additions and 0 deletions
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14
target/arm/helper-mve.h
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@ -130,3 +130,17 @@ DEF_HELPER_FLAGS_4(mve_vhsubsw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vhsubub, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vhsubuh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vhsubuw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vmullbsb, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vmullbsh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vmullbsw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vmullbub, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vmullbuh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vmullbuw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vmulltsb, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vmulltsh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vmulltsw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vmulltub, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vmulltuh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
DEF_HELPER_FLAGS_4(mve_vmulltuw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)

5
target/arm/mve.decode
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@ -101,6 +101,11 @@ VHADD_U 111 1 1111 0 . .. ... 0 ... 0 0000 . 1 . 0 ... 0 @2op
VHSUB_S 111 0 1111 0 . .. ... 0 ... 0 0010 . 1 . 0 ... 0 @2op
VHSUB_U 111 1 1111 0 . .. ... 0 ... 0 0010 . 1 . 0 ... 0 @2op
VMULL_BS 111 0 1110 0 . .. ... 1 ... 0 1110 . 0 . 0 ... 0 @2op
VMULL_BU 111 1 1110 0 . .. ... 1 ... 0 1110 . 0 . 0 ... 0 @2op
VMULL_TS 111 0 1110 0 . .. ... 1 ... 1 1110 . 0 . 0 ... 0 @2op
VMULL_TU 111 1 1110 0 . .. ... 1 ... 1 1110 . 0 . 0 ... 0 @2op
# Vector miscellaneous
VCLS 1111 1111 1 . 11 .. 00 ... 0 0100 01 . 0 ... 0 @1op

34
target/arm/mve_helper.c
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@ -349,6 +349,26 @@ DO_1OP(vfnegs, 8, uint64_t, DO_FNEGS)
DO_2OP(OP##h, 2, int16_t, FN) \
DO_2OP(OP##w, 4, int32_t, FN)
/*
* "Long" operations where two half-sized inputs (taken from either the
* top or the bottom of the input vector) produce a double-width result.
* Here ESIZE, TYPE are for the input, and LESIZE, LTYPE for the output.
*/
#define DO_2OP_L(OP, TOP, ESIZE, TYPE, LESIZE, LTYPE, FN) \
void HELPER(glue(mve_, OP))(CPUARMState *env, void *vd, void *vn, void *vm) \
{ \
LTYPE *d = vd; \
TYPE *n = vn, *m = vm; \
uint16_t mask = mve_element_mask(env); \
unsigned le; \
for (le = 0; le < 16 / LESIZE; le++, mask >>= LESIZE) { \
LTYPE r = FN((LTYPE)n[H##ESIZE(le * 2 + TOP)], \
m[H##ESIZE(le * 2 + TOP)]); \
mergemask(&d[H##LESIZE(le)], r, mask); \
} \
mve_advance_vpt(env); \
}
#define DO_AND(N, M) ((N) & (M))
#define DO_BIC(N, M) ((N) & ~(M))
#define DO_ORR(N, M) ((N) | (M))
@ -369,6 +389,20 @@ DO_2OP_U(vadd, DO_ADD)
DO_2OP_U(vsub, DO_SUB)
DO_2OP_U(vmul, DO_MUL)
DO_2OP_L(vmullbsb, 0, 1, int8_t, 2, int16_t, DO_MUL)
DO_2OP_L(vmullbsh, 0, 2, int16_t, 4, int32_t, DO_MUL)
DO_2OP_L(vmullbsw, 0, 4, int32_t, 8, int64_t, DO_MUL)
DO_2OP_L(vmullbub, 0, 1, uint8_t, 2, uint16_t, DO_MUL)
DO_2OP_L(vmullbuh, 0, 2, uint16_t, 4, uint32_t, DO_MUL)
DO_2OP_L(vmullbuw, 0, 4, uint32_t, 8, uint64_t, DO_MUL)
DO_2OP_L(vmulltsb, 1, 1, int8_t, 2, int16_t, DO_MUL)
DO_2OP_L(vmulltsh, 1, 2, int16_t, 4, int32_t, DO_MUL)
DO_2OP_L(vmulltsw, 1, 4, int32_t, 8, int64_t, DO_MUL)
DO_2OP_L(vmulltub, 1, 1, uint8_t, 2, uint16_t, DO_MUL)
DO_2OP_L(vmulltuh, 1, 2, uint16_t, 4, uint32_t, DO_MUL)
DO_2OP_L(vmulltuw, 1, 4, uint32_t, 8, uint64_t, DO_MUL)
/*
* Because the computation type is at least twice as large as required,
* these work for both signed and unsigned source types.

4
target/arm/translate-mve.c
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@ -361,3 +361,7 @@ DO_2OP(VHADD_S, vhadds)
DO_2OP(VHADD_U, vhaddu)
DO_2OP(VHSUB_S, vhsubs)
DO_2OP(VHSUB_U, vhsubu)
DO_2OP(VMULL_BS, vmullbs)
DO_2OP(VMULL_BU, vmullbu)
DO_2OP(VMULL_TS, vmullts)
DO_2OP(VMULL_TU, vmulltu)