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| author | Peter Maydell <peter.maydell@linaro.org> | 2021-09-01 09:02:36 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2021-09-01 11:08:17 +0100 |
| commit | 4773e74e5f58dbf5637a27f37cd3b95b0ee33ac8 (patch) | |
| tree | d58b72577f4ac36dd2ff9f441fb6658548c79c92 | |
| parent | abfe39b263595a47f42219aa3a3fc63804a12a35 (diff) | |
| download | qemu-4773e74e5f58dbf5637a27f37cd3b95b0ee33ac8.zip qemu-4773e74e5f58dbf5637a27f37cd3b95b0ee33ac8.tar.gz qemu-4773e74e5f58dbf5637a27f37cd3b95b0ee33ac8.tar.bz2 | |
target/arm: Implement MVE fp-with-scalar VFMA, VFMAS
Implement the MVE fp-with-scalar VFMA and VFMAS insns.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
| -rw-r--r-- | target/arm/helper-mve.h | 6 | ||||
| -rw-r--r-- | target/arm/mve.decode | 14 | ||||
| -rw-r--r-- | target/arm/mve_helper.c | 37 | ||||
| -rw-r--r-- | target/arm/translate-mve.c | 2 |
4 files changed, 56 insertions, 3 deletions
diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h index 091ec4b..cb7b642 100644 --- a/target/arm/helper-mve.h +++ b/target/arm/helper-mve.h @@ -809,3 +809,9 @@ DEF_HELPER_FLAGS_4(mve_vfsub_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32) DEF_HELPER_FLAGS_4(mve_vfmul_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32) DEF_HELPER_FLAGS_4(mve_vfmul_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32) + +DEF_HELPER_FLAGS_4(mve_vfma_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32) +DEF_HELPER_FLAGS_4(mve_vfma_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32) + +DEF_HELPER_FLAGS_4(mve_vfmas_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32) +DEF_HELPER_FLAGS_4(mve_vfmas_scalars, TCG_CALL_NO_WG, void, env, ptr, ptr, i32) diff --git a/target/arm/mve.decode b/target/arm/mve.decode index 5ba8b6d..d2bd681 100644 --- a/target/arm/mve.decode +++ b/target/arm/mve.decode @@ -508,9 +508,17 @@ VSUB_scalar 1110 1110 0 . .. ... 1 ... 1 1111 . 100 .... @2scalar VQRDMULH_scalar 1111 1110 0 . .. ... 1 ... 0 1110 . 110 .... @2scalar } -# The U bit (28) is don't-care because it does not affect the result -VMLA 111- 1110 0 . .. ... 1 ... 0 1110 . 100 .... @2scalar -VMLAS 111- 1110 0 . .. ... 1 ... 1 1110 . 100 .... @2scalar +{ + VFMA_scalar 111 . 1110 0 . 11 ... 1 ... 0 1110 . 100 .... @2op_fp_scalar + # The U bit (28) is don't-care because it does not affect the result + VMLA 111 - 1110 0 . .. ... 1 ... 0 1110 . 100 .... @2scalar +} + +{ + VFMAS_scalar 111 . 1110 0 . 11 ... 1 ... 1 1110 . 100 .... @2op_fp_scalar + # The U bit (28) is don't-care because it does not affect the result + VMLAS 111 - 1110 0 . .. ... 1 ... 1 1110 . 100 .... @2scalar +} VQRDMLAH 1110 1110 0 . .. ... 0 ... 0 1110 . 100 .... @2scalar VQRDMLASH 1110 1110 0 . .. ... 0 ... 1 1110 . 100 .... @2scalar diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c index b49975f..36f0910 100644 --- a/target/arm/mve_helper.c +++ b/target/arm/mve_helper.c @@ -3075,3 +3075,40 @@ DO_VCMLA(vcmla270s, 4, float32, 3, DO_VCMLAS) DO_2OP_FP_SCALAR_ALL(vfadd_scalar, add) DO_2OP_FP_SCALAR_ALL(vfsub_scalar, sub) DO_2OP_FP_SCALAR_ALL(vfmul_scalar, mul) + +#define DO_2OP_FP_ACC_SCALAR(OP, ESIZE, TYPE, FN) \ + void HELPER(glue(mve_, OP))(CPUARMState *env, \ + void *vd, void *vn, uint32_t rm) \ + { \ + TYPE *d = vd, *n = vn; \ + TYPE r, m = rm; \ + uint16_t mask = mve_element_mask(env); \ + unsigned e; \ + float_status *fpst; \ + float_status scratch_fpst; \ + for (e = 0; e < 16 / ESIZE; e++, mask >>= ESIZE) { \ + if ((mask & MAKE_64BIT_MASK(0, ESIZE)) == 0) { \ + continue; \ + } \ + fpst = (ESIZE == 2) ? &env->vfp.standard_fp_status_f16 : \ + &env->vfp.standard_fp_status; \ + if (!(mask & 1)) { \ + /* We need the result but without updating flags */ \ + scratch_fpst = *fpst; \ + fpst = &scratch_fpst; \ + } \ + r = FN(n[H##ESIZE(e)], m, d[H##ESIZE(e)], 0, fpst); \ + mergemask(&d[H##ESIZE(e)], r, mask); \ + } \ + mve_advance_vpt(env); \ + } + +/* VFMAS is vector * vector + scalar, so swap op2 and op3 */ +#define DO_VFMAS_SCALARH(N, M, D, F, S) float16_muladd(N, D, M, F, S) +#define DO_VFMAS_SCALARS(N, M, D, F, S) float32_muladd(N, D, M, F, S) + +/* VFMA is vector * scalar + vector */ +DO_2OP_FP_ACC_SCALAR(vfma_scalarh, 2, float16, float16_muladd) +DO_2OP_FP_ACC_SCALAR(vfma_scalars, 4, float32, float32_muladd) +DO_2OP_FP_ACC_SCALAR(vfmas_scalarh, 2, float16, DO_VFMAS_SCALARH) +DO_2OP_FP_ACC_SCALAR(vfmas_scalars, 4, float32, DO_VFMAS_SCALARS) diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c index bc4b3f8..3627ba2 100644 --- a/target/arm/translate-mve.c +++ b/target/arm/translate-mve.c @@ -979,6 +979,8 @@ static bool trans_VQDMULLT_scalar(DisasContext *s, arg_2scalar *a) DO_2OP_FP_SCALAR(VADD_fp_scalar, vfadd_scalar) DO_2OP_FP_SCALAR(VSUB_fp_scalar, vfsub_scalar) DO_2OP_FP_SCALAR(VMUL_fp_scalar, vfmul_scalar) +DO_2OP_FP_SCALAR(VFMA_scalar, vfma_scalar) +DO_2OP_FP_SCALAR(VFMAS_scalar, vfmas_scalar) static bool do_long_dual_acc(DisasContext *s, arg_vmlaldav *a, MVEGenLongDualAccOpFn *fn) |