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[Qemu-devel] [PULL 29/55] target/arm: Implement SVE floating-point conve
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PULL 29/55] target/arm: Implement SVE floating-point convert precision |
Date: |
Fri, 29 Jun 2018 15:53:21 +0100 |
From: Richard Henderson <address@hidden>
Reviewed-by: Peter Maydell <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
Message-id: address@hidden
Signed-off-by: Peter Maydell <address@hidden>
---
target/arm/helper-sve.h | 13 +++++++++
target/arm/sve_helper.c | 55 ++++++++++++++++++++++++++++++++++++++
target/arm/translate-sve.c | 30 +++++++++++++++++++++
target/arm/sve.decode | 8 ++++++
4 files changed, 106 insertions(+)
diff --git a/target/arm/helper-sve.h b/target/arm/helper-sve.h
index aca137fc37d..4c379dbb057 100644
--- a/target/arm/helper-sve.h
+++ b/target/arm/helper-sve.h
@@ -942,6 +942,19 @@ DEF_HELPER_FLAGS_6(sve_fmins_s, TCG_CALL_NO_RWG,
DEF_HELPER_FLAGS_6(sve_fmins_d, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, i64, ptr, i32)
+DEF_HELPER_FLAGS_5(sve_fcvt_sh, TCG_CALL_NO_RWG,
+ void, ptr, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_5(sve_fcvt_dh, TCG_CALL_NO_RWG,
+ void, ptr, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_5(sve_fcvt_hs, TCG_CALL_NO_RWG,
+ void, ptr, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_5(sve_fcvt_ds, TCG_CALL_NO_RWG,
+ void, ptr, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_5(sve_fcvt_hd, TCG_CALL_NO_RWG,
+ void, ptr, ptr, ptr, ptr, i32)
+DEF_HELPER_FLAGS_5(sve_fcvt_sd, TCG_CALL_NO_RWG,
+ void, ptr, ptr, ptr, ptr, i32)
+
DEF_HELPER_FLAGS_5(sve_scvt_hh, TCG_CALL_NO_RWG,
void, ptr, ptr, ptr, ptr, i32)
DEF_HELPER_FLAGS_5(sve_scvt_sh, TCG_CALL_NO_RWG,
diff --git a/target/arm/sve_helper.c b/target/arm/sve_helper.c
index 79358c804bd..4b36c1eecf9 100644
--- a/target/arm/sve_helper.c
+++ b/target/arm/sve_helper.c
@@ -3147,6 +3147,61 @@ void HELPER(NAME)(void *vd, void *vn, void *vg, void
*status, uint32_t desc) \
} while (i != 0); \
}
+/* SVE fp16 conversions always use IEEE mode. Like AdvSIMD, they ignore
+ * FZ16. When converting from fp16, this affects flushing input denormals;
+ * when converting to fp16, this affects flushing output denormals.
+ */
+static inline float32 sve_f16_to_f32(float16 f, float_status *fpst)
+{
+ flag save = get_flush_inputs_to_zero(fpst);
+ float32 ret;
+
+ set_flush_inputs_to_zero(false, fpst);
+ ret = float16_to_float32(f, true, fpst);
+ set_flush_inputs_to_zero(save, fpst);
+ return ret;
+}
+
+static inline float64 sve_f16_to_f64(float16 f, float_status *fpst)
+{
+ flag save = get_flush_inputs_to_zero(fpst);
+ float64 ret;
+
+ set_flush_inputs_to_zero(false, fpst);
+ ret = float16_to_float64(f, true, fpst);
+ set_flush_inputs_to_zero(save, fpst);
+ return ret;
+}
+
+static inline float16 sve_f32_to_f16(float32 f, float_status *fpst)
+{
+ flag save = get_flush_to_zero(fpst);
+ float16 ret;
+
+ set_flush_to_zero(false, fpst);
+ ret = float32_to_float16(f, true, fpst);
+ set_flush_to_zero(save, fpst);
+ return ret;
+}
+
+static inline float16 sve_f64_to_f16(float64 f, float_status *fpst)
+{
+ flag save = get_flush_to_zero(fpst);
+ float16 ret;
+
+ set_flush_to_zero(false, fpst);
+ ret = float64_to_float16(f, true, fpst);
+ set_flush_to_zero(save, fpst);
+ return ret;
+}
+
+DO_ZPZ_FP(sve_fcvt_sh, uint32_t, H1_4, sve_f32_to_f16)
+DO_ZPZ_FP(sve_fcvt_hs, uint32_t, H1_4, sve_f16_to_f32)
+DO_ZPZ_FP(sve_fcvt_dh, uint64_t, , sve_f64_to_f16)
+DO_ZPZ_FP(sve_fcvt_hd, uint64_t, , sve_f16_to_f64)
+DO_ZPZ_FP(sve_fcvt_ds, uint64_t, , float64_to_float32)
+DO_ZPZ_FP(sve_fcvt_sd, uint64_t, , float32_to_float64)
+
DO_ZPZ_FP(sve_scvt_hh, uint16_t, H1_2, int16_to_float16)
DO_ZPZ_FP(sve_scvt_sh, uint32_t, H1_4, int32_to_float16)
DO_ZPZ_FP(sve_scvt_ss, uint32_t, H1_4, int32_to_float32)
diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c
index 50c54c171b3..f2a9057369d 100644
--- a/target/arm/translate-sve.c
+++ b/target/arm/translate-sve.c
@@ -3940,6 +3940,36 @@ static bool do_zpz_ptr(DisasContext *s, int rd, int rn,
int pg,
return true;
}
+static bool trans_FCVT_sh(DisasContext *s, arg_rpr_esz *a, uint32_t insn)
+{
+ return do_zpz_ptr(s, a->rd, a->rn, a->pg, true, gen_helper_sve_fcvt_sh);
+}
+
+static bool trans_FCVT_hs(DisasContext *s, arg_rpr_esz *a, uint32_t insn)
+{
+ return do_zpz_ptr(s, a->rd, a->rn, a->pg, false, gen_helper_sve_fcvt_hs);
+}
+
+static bool trans_FCVT_dh(DisasContext *s, arg_rpr_esz *a, uint32_t insn)
+{
+ return do_zpz_ptr(s, a->rd, a->rn, a->pg, true, gen_helper_sve_fcvt_dh);
+}
+
+static bool trans_FCVT_hd(DisasContext *s, arg_rpr_esz *a, uint32_t insn)
+{
+ return do_zpz_ptr(s, a->rd, a->rn, a->pg, false, gen_helper_sve_fcvt_hd);
+}
+
+static bool trans_FCVT_ds(DisasContext *s, arg_rpr_esz *a, uint32_t insn)
+{
+ return do_zpz_ptr(s, a->rd, a->rn, a->pg, false, gen_helper_sve_fcvt_ds);
+}
+
+static bool trans_FCVT_sd(DisasContext *s, arg_rpr_esz *a, uint32_t insn)
+{
+ return do_zpz_ptr(s, a->rd, a->rn, a->pg, false, gen_helper_sve_fcvt_sd);
+}
+
static bool trans_SCVTF_hh(DisasContext *s, arg_rpr_esz *a, uint32_t insn)
{
return do_zpz_ptr(s, a->rd, a->rn, a->pg, true, gen_helper_sve_scvt_hh);
diff --git a/target/arm/sve.decode b/target/arm/sve.decode
index fdcc252eaa7..18c174e92df 100644
--- a/target/arm/sve.decode
+++ b/target/arm/sve.decode
@@ -821,6 +821,14 @@ FNMLS_zpzzz 01100101 .. 1 ..... 111 ... ..... .....
@rdn_pg_rm_ra
### SVE FP Unary Operations Predicated Group
+# SVE floating-point convert precision
+FCVT_sh 01100101 10 0010 00 101 ... ..... ..... @rd_pg_rn_e0
+FCVT_hs 01100101 10 0010 01 101 ... ..... ..... @rd_pg_rn_e0
+FCVT_dh 01100101 11 0010 00 101 ... ..... ..... @rd_pg_rn_e0
+FCVT_hd 01100101 11 0010 01 101 ... ..... ..... @rd_pg_rn_e0
+FCVT_ds 01100101 11 0010 10 101 ... ..... ..... @rd_pg_rn_e0
+FCVT_sd 01100101 11 0010 11 101 ... ..... ..... @rd_pg_rn_e0
+
# SVE integer convert to floating-point
SCVTF_hh 01100101 01 010 01 0 101 ... ..... ..... @rd_pg_rn_e0
SCVTF_sh 01100101 01 010 10 0 101 ... ..... ..... @rd_pg_rn_e0
--
2.17.1
- [Qemu-devel] [PULL 23/55] target/arm: Implement SVE floating-point arithmetic with immediate, (continued)
- [Qemu-devel] [PULL 23/55] target/arm: Implement SVE floating-point arithmetic with immediate, Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 25/55] target/arm: Implement SVE FP Fast Reduction Group, Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 30/55] target/arm: Implement SVE floating-point convert to integer, Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 27/55] target/arm: Implement SVE FP Compare with Zero Group, Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 33/55] target/arm: Implement SVE MOVPRFX, Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 37/55] target/arm: Implement SVE fp complex multiply add (indexed), Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 19/55] target/arm: Implement SVE gather loads, Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 24/55] target/arm: Implement SVE Floating Point Multiply Indexed Group, Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 39/55] target/arm: Implement SVE dot product (indexed), Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 12/55] target/arm: Implement SVE floating-point arithmetic (predicated), Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 29/55] target/arm: Implement SVE floating-point convert precision,
Peter Maydell <=
- [Qemu-devel] [PULL 36/55] target/arm: Pass index to AdvSIMD FCMLA (indexed), Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 13/55] target/arm: Implement SVE FP Multiply-Add Group, Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 28/55] target/arm: Implement SVE floating-point trig multiply-add coefficient, Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 35/55] target/arm: Implement SVE fp complex multiply add, Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 38/55] target/arm: Implement SVE dot product (vectors), Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 43/55] i.mx7d: Remove unused header files, Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 44/55] i.mx7d: Change SRC unimplemented device name from sdma to src, Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 34/55] target/arm: Implement SVE floating-point complex add, Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 41/55] target/arm: Implement ARMv8.2-DotProd, Peter Maydell, 2018/06/29
- [Qemu-devel] [PULL 48/55] target/arm: Mark PMINTENSET accesses as possibly doing IO, Peter Maydell, 2018/06/29