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target/arm: Implement MVE VCLS

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Implement the MVE VCLS insn.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210617121628.20116-5-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2021-06-17 13:15:48 +01:00
parent 0f0f2bd548
commit 6437f1f77c
4 changed files with 13 additions and 0 deletions
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4
target/arm/helper-mve.h
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@ -33,6 +33,10 @@ DEF_HELPER_FLAGS_3(mve_vstrb_h, TCG_CALL_NO_WG, void, env, ptr, i32)
DEF_HELPER_FLAGS_3(mve_vstrb_w, TCG_CALL_NO_WG, void, env, ptr, i32)
DEF_HELPER_FLAGS_3(mve_vstrh_w, TCG_CALL_NO_WG, void, env, ptr, i32)
DEF_HELPER_FLAGS_3(mve_vclsb, TCG_CALL_NO_WG, void, env, ptr, ptr)
DEF_HELPER_FLAGS_3(mve_vclsh, TCG_CALL_NO_WG, void, env, ptr, ptr)
DEF_HELPER_FLAGS_3(mve_vclsw, TCG_CALL_NO_WG, void, env, ptr, ptr)
DEF_HELPER_FLAGS_3(mve_vclzb, TCG_CALL_NO_WG, void, env, ptr, ptr)
DEF_HELPER_FLAGS_3(mve_vclzh, TCG_CALL_NO_WG, void, env, ptr, ptr)
DEF_HELPER_FLAGS_3(mve_vclzw, TCG_CALL_NO_WG, void, env, ptr, ptr)

1
target/arm/mve.decode
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@ -68,4 +68,5 @@ VLDR_VSTR 1110110 1 a:1 . w:1 . .... ... 111110 ....... @vldr_vstr \
# Vector miscellaneous
VCLS 1111 1111 1 . 11 .. 00 ... 0 0100 01 . 0 ... 0 @1op
VCLZ 1111 1111 1 . 11 .. 00 ... 0 0100 11 . 0 ... 0 @1op

7
target/arm/mve_helper.c
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@ -257,6 +257,13 @@ static void mergemask_sq(int64_t *d, int64_t r, uint16_t mask)
mve_advance_vpt(env); \
}
#define DO_CLS_B(N) (clrsb32(N) - 24)
#define DO_CLS_H(N) (clrsb32(N) - 16)
DO_1OP(vclsb, 1, int8_t, DO_CLS_B)
DO_1OP(vclsh, 2, int16_t, DO_CLS_H)
DO_1OP(vclsw, 4, int32_t, clrsb32)
#define DO_CLZ_B(N) (clz32(N) - 24)
#define DO_CLZ_H(N) (clz32(N) - 16)

1
target/arm/translate-mve.c
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@ -198,3 +198,4 @@ static bool do_1op(DisasContext *s, arg_1op *a, MVEGenOneOpFn fn)
}
DO_1OP(VCLZ, vclz)
DO_1OP(VCLS, vcls)