Avoid the use of the OptContext slots.  Find TempOptInfo once.
When we fold to and, use fold_and.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/optimize.c | 34 ++++++++++++++++------------------
 1 file changed, 16 insertions(+), 18 deletions(-)

diff --git a/tcg/optimize.c b/tcg/optimize.c
index af7111c98c..de32cc0323 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -1642,14 +1642,16 @@ static bool fold_ctpop(OptContext *ctx, TCGOp *op)
 
 static bool fold_deposit(OptContext *ctx, TCGOp *op)
 {
+    TempOptInfo *t1 = arg_info(op->args[1]);
+    TempOptInfo *t2 = arg_info(op->args[2]);
+    int ofs = op->args[3];
+    int len = op->args[4];
     TCGOpcode and_opc;
+    uint64_t z_mask;
 
-    if (arg_is_const(op->args[1]) && arg_is_const(op->args[2])) {
-        uint64_t t1 = arg_info(op->args[1])->val;
-        uint64_t t2 = arg_info(op->args[2])->val;
-
-        t1 = deposit64(t1, op->args[3], op->args[4], t2);
-        return tcg_opt_gen_movi(ctx, op, op->args[0], t1);
+    if (t1->is_const && t2->is_const) {
+        return tcg_opt_gen_movi(ctx, op, op->args[0],
+                                deposit64(t1->val, ofs, len, t2->val));
     }
 
     switch (ctx->type) {
@@ -1664,30 +1666,26 @@ static bool fold_deposit(OptContext *ctx, TCGOp *op)
     }
 
     /* Inserting a value into zero at offset 0. */
-    if (arg_is_const_val(op->args[1], 0) && op->args[3] == 0) {
-        uint64_t mask = MAKE_64BIT_MASK(0, op->args[4]);
+    if (t1->is_const && t1->val == 0 && ofs == 0) {
+        uint64_t mask = MAKE_64BIT_MASK(0, len);
 
         op->opc = and_opc;
         op->args[1] = op->args[2];
         op->args[2] = arg_new_constant(ctx, mask);
-        ctx->z_mask = mask & arg_info(op->args[1])->z_mask;
-        return false;
+        return fold_and(ctx, op);
     }
 
     /* Inserting zero into a value. */
-    if (arg_is_const_val(op->args[2], 0)) {
-        uint64_t mask = deposit64(-1, op->args[3], op->args[4], 0);
+    if (t2->is_const && t2->val == 0) {
+        uint64_t mask = deposit64(-1, ofs, len, 0);
 
         op->opc = and_opc;
         op->args[2] = arg_new_constant(ctx, mask);
-        ctx->z_mask = mask & arg_info(op->args[1])->z_mask;
-        return false;
+        return fold_and(ctx, op);
     }
 
-    ctx->z_mask = deposit64(arg_info(op->args[1])->z_mask,
-                            op->args[3], op->args[4],
-                            arg_info(op->args[2])->z_mask);
-    return false;
+    z_mask = deposit64(t1->z_mask, ofs, len, t2->z_mask);
+    return fold_masks_z(ctx, op, z_mask);
 }
 
 static bool fold_divide(OptContext *ctx, TCGOp *op)
-- 
2.43.0