target/riscv: rvv-1.0: whole register move instructions

Add the following instructions:

* vmv1r.v
* vmv2r.v
* vmv4r.v
* vmv8r.v

Signed-off-by: Frank Chang <frank.chang@sifive.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20211210075704.23951-40-frank.chang@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index ab5fdbf9be8c4699b2b133c6fcddc93bdf7e7eac..06a8076311220e9ae9bfcc3a274da3e3471cf9b0 100644 (file)
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -650,6 +650,10 @@ vrgatherei16_vv 001110 . ..... ..... 000 ..... 1010111 @r_vm
 vrgather_vx     001100 . ..... ..... 100 ..... 1010111 @r_vm
 vrgather_vi     001100 . ..... ..... 011 ..... 1010111 @r_vm
 vcompress_vm    010111 - ..... ..... 010 ..... 1010111 @r
+vmv1r_v         100111 1 ..... 00000 011 ..... 1010111 @r2rd
+vmv2r_v         100111 1 ..... 00001 011 ..... 1010111 @r2rd
+vmv4r_v         100111 1 ..... 00011 011 ..... 1010111 @r2rd
+vmv8r_v         100111 1 ..... 00111 011 ..... 1010111 @r2rd
 
 vsetvli         0 ........... ..... 111 ..... 1010111  @r2_zimm
 vsetvl          1000000 ..... ..... 111 ..... 1010111  @r

diff --git a/target/riscv/insn_trans/trans_rvv.c.inc b/target/riscv/insn_trans/trans_rvv.c.inc
index 89f88a0ea70175dc4484b93d2ecbb6953a921b1a..91e7c14ec44b7cbca163e4ef73ed9a1720dcafb6 100644 (file)
--- a/target/riscv/insn_trans/trans_rvv.c.inc
+++ b/target/riscv/insn_trans/trans_rvv.c.inc
@@ -3259,3 +3259,28 @@ static bool trans_vcompress_vm(DisasContext *s, arg_r *a)
     }
     return false;
 }
+
+/*
+ * Whole Vector Register Move Instructions ignore vtype and vl setting.
+ * Thus, we don't need to check vill bit. (Section 16.6)
+ */
+#define GEN_VMV_WHOLE_TRANS(NAME, LEN)                          \
+static bool trans_##NAME(DisasContext *s, arg_##NAME * a)       \
+{                                                               \
+    if (require_rvv(s) &&                                       \
+        QEMU_IS_ALIGNED(a->rd, LEN) &&                          \
+        QEMU_IS_ALIGNED(a->rs2, LEN)) {                         \
+        /* EEW = 8 */                                           \
+        tcg_gen_gvec_mov(MO_8, vreg_ofs(s, a->rd),              \
+                         vreg_ofs(s, a->rs2),                   \
+                         s->vlen / 8 * LEN, s->vlen / 8 * LEN); \
+        mark_vs_dirty(s);                                       \
+        return true;                                            \
+    }                                                           \
+    return false;                                               \
+}
+
+GEN_VMV_WHOLE_TRANS(vmv1r_v, 1)
+GEN_VMV_WHOLE_TRANS(vmv2r_v, 2)
+GEN_VMV_WHOLE_TRANS(vmv4r_v, 4)
+GEN_VMV_WHOLE_TRANS(vmv8r_v, 8)