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From: Peter Maydell <peter.maydell@linaro.org>
To: qemu-arm@nongnu.org,
qemu-devel@nongnu.org
Subject: [PATCH v2 68/69] target/arm: Read fz16 from env->vfp.fpcr
Date: Sat, 1 Feb 2025 16:40:11 +0000
Message-Id: <20250201164012.1660228-69-peter.maydell@linaro.org>
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From: Richard Henderson <richard.henderson@linaro.org>
Read the bit from the source, rather than from the proxy via
get_flush_inputs_to_zero. This makes it clear that it does
not matter which of the float_status structures is used.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20250129013857.135256-34-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
target/arm/tcg/vec_helper.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/target/arm/tcg/vec_helper.c b/target/arm/tcg/vec_helper.c
index 2da44ae7102..cc3586f44ac 100644
--- a/target/arm/tcg/vec_helper.c
+++ b/target/arm/tcg/vec_helper.c
@@ -2155,7 +2155,7 @@ void HELPER(gvec_fmlal_a32)(void *vd, void *vn, void =
*vm,
uint64_t negx =3D is_s ? 0x8000800080008000ull : 0;
=20
do_fmlal(vd, vn, vm, &env->vfp.fp_status[FPST_STD], negx, 0, desc,
- get_flush_inputs_to_zero(&env->vfp.fp_status[FPST_A32_F16]));
+ env->vfp.fpcr & FPCR_FZ16);
}
=20
void HELPER(gvec_fmlal_a64)(void *vd, void *vn, void *vm,
@@ -2173,7 +2173,7 @@ void HELPER(gvec_fmlal_a64)(void *vd, void *vn, void =
*vm,
}
}
do_fmlal(vd, vn, vm, &env->vfp.fp_status[FPST_A64], negx, negf, desc,
- get_flush_inputs_to_zero(&env->vfp.fp_status[FPST_A64_F16]));
+ env->vfp.fpcr & FPCR_FZ16);
}
=20
void HELPER(sve2_fmlal_zzzw_s)(void *vd, void *vn, void *vm, void *va,
@@ -2183,7 +2183,7 @@ void HELPER(sve2_fmlal_zzzw_s)(void *vd, void *vn, vo=
id *vm, void *va,
bool is_s =3D extract32(desc, SIMD_DATA_SHIFT, 1);
intptr_t sel =3D extract32(desc, SIMD_DATA_SHIFT + 1, 1) * sizeof(floa=
t16);
float_status *status =3D &env->vfp.fp_status[FPST_A64];
- bool fz16 =3D get_flush_inputs_to_zero(&env->vfp.fp_status[FPST_A64_F1=
6]);
+ bool fz16 =3D env->vfp.fpcr & FPCR_FZ16;
int negx =3D 0, negf =3D 0;
=20
if (is_s) {
@@ -2236,7 +2236,7 @@ void HELPER(gvec_fmlal_idx_a32)(void *vd, void *vn, v=
oid *vm,
uint64_t negx =3D is_s ? 0x8000800080008000ull : 0;
=20
do_fmlal_idx(vd, vn, vm, &env->vfp.fp_status[FPST_STD], negx, 0, desc,
- get_flush_inputs_to_zero(&env->vfp.fp_status[FPST_A32_F16=
]));
+ env->vfp.fpcr & FPCR_FZ16);
}
=20
void HELPER(gvec_fmlal_idx_a64)(void *vd, void *vn, void *vm,
@@ -2254,7 +2254,7 @@ void HELPER(gvec_fmlal_idx_a64)(void *vd, void *vn, v=
oid *vm,
}
}
do_fmlal_idx(vd, vn, vm, &env->vfp.fp_status[FPST_A64], negx, negf, de=
sc,
- get_flush_inputs_to_zero(&env->vfp.fp_status[FPST_A64_F16=
]));
+ env->vfp.fpcr & FPCR_FZ16);
}
=20
void HELPER(sve2_fmlal_zzxw_s)(void *vd, void *vn, void *vm, void *va,
@@ -2265,7 +2265,7 @@ void HELPER(sve2_fmlal_zzxw_s)(void *vd, void *vn, vo=
id *vm, void *va,
intptr_t sel =3D extract32(desc, SIMD_DATA_SHIFT + 1, 1) * sizeof(floa=
t16);
intptr_t idx =3D extract32(desc, SIMD_DATA_SHIFT + 2, 3) * sizeof(floa=
t16);
float_status *status =3D &env->vfp.fp_status[FPST_A64];
- bool fz16 =3D get_flush_inputs_to_zero(&env->vfp.fp_status[FPST_A64_F1=
6]);
+ bool fz16 =3D env->vfp.fpcr & FPCR_FZ16;
int negx =3D 0, negf =3D 0;
=20
if (is_s) {
--=20
2.34.1