[RFC PATCH 2/2] target/loongarch: Use i128 for 128-bit load/store in XVLD

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 target/loongarch/translate.c                |  6 ++++++
 target/loongarch/insn_trans/trans_vec.c.inc | 16 +++++++---------
 2 files changed, 13 insertions(+), 9 deletions(-)

diff --git a/target/loongarch/translate.c b/target/loongarch/translate.c
index c6edfc800f..89e35770b7 100644
--- a/target/loongarch/translate.c
+++ b/target/loongarch/translate.c
@@ -67,6 +67,12 @@ static inline void get_vreg128(TCGv_i128 dest, int regno, int index)
                     offsetof(CPULoongArchState, fpr[regno].vreg.Q(index)));
 }
 
+static inline void set_vreg128(TCGv_i128 src, int regno, int index)
+{
+    tcg_gen_st_i128(src, tcg_env,
+                    offsetof(CPULoongArchState, fpr[regno].vreg.Q(index)));
+}
+
 static inline int plus_1(DisasContext *ctx, int x)
 {
     return x + 1;
diff --git a/target/loongarch/insn_trans/trans_vec.c.inc b/target/loongarch/insn_trans/trans_vec.c.inc
index dd41f5e48e..c8b7bfa67f 100644
--- a/target/loongarch/insn_trans/trans_vec.c.inc
+++ b/target/loongarch/insn_trans/trans_vec.c.inc
@@ -5458,18 +5458,16 @@ static bool gen_lasx_memory(DisasContext *ctx, arg_vr_i *a,
 
 static void gen_xvld(DisasContext *ctx, int vreg, TCGv addr)
 {
-    int i;
+    MemOp mop = MO_128 | MO_TE;
     TCGv temp = tcg_temp_new();
-    TCGv dest = tcg_temp_new();
+    TCGv_i128 dest = tcg_temp_new_i128();
 
-    tcg_gen_qemu_ld_i64(dest, addr, ctx->mem_idx, MO_TEUQ);
-    set_vreg64(dest, vreg, 0);
+    tcg_gen_qemu_ld_i128(dest, addr, ctx->mem_idx, mop);
+    set_vreg128(dest, vreg, 0);
 
-    for (i = 1; i < 4; i++) {
-        tcg_gen_addi_tl(temp, addr, 8 * i);
-        tcg_gen_qemu_ld_i64(dest, temp, ctx->mem_idx, MO_TEUQ);
-        set_vreg64(dest, vreg, i);
-    }
+    tcg_gen_addi_tl(temp, addr, 16);
+    tcg_gen_qemu_ld_i128(dest, temp, ctx->mem_idx, mop);
+    set_vreg128(dest, vreg, 1);
 }
 
 static void gen_xvst(DisasContext * ctx, int vreg, TCGv addr)
-- 
2.41.0