tcg/optimize: Split out arg_is_const_val

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
qemu · Feb 3, 2024 · 27cdb85 · 27cdb85
1 parent caf3eac
commit 27cdb85
Showing 1 changed file with 23 additions and 15 deletions.
diff --git a/tcg/optimize.c b/tcg/optimize.c
@@ -124,11 +124,22 @@ static inline bool ts_is_const(TCGTemp *ts)
     return ts_info(ts)->is_const;
 }
 
+static inline bool ts_is_const_val(TCGTemp *ts, uint64_t val)
+{
+    TempOptInfo *ti = ts_info(ts);
+    return ti->is_const && ti->val == val;
+}
+
 static inline bool arg_is_const(TCGArg arg)
 {
     return ts_is_const(arg_temp(arg));
 }
 
+static inline bool arg_is_const_val(TCGArg arg, uint64_t val)
+{
+    return ts_is_const_val(arg_temp(arg), val);
+}
+
 static inline bool ts_is_copy(TCGTemp *ts)
 {
     return ts_info(ts)->next_copy != ts;
@@ -689,7 +700,7 @@ static int do_constant_folding_cond(TCGType type, TCGArg x,
         }
     } else if (args_are_copies(x, y)) {
         return do_constant_folding_cond_eq(c);
-    } else if (arg_is_const(y) && arg_info(y)->val == 0) {
+    } else if (arg_is_const_val(y, 0)) {
         switch (c) {
         case TCG_COND_LTU:
             return 0;
@@ -954,7 +965,7 @@ static bool fold_to_not(OptContext *ctx, TCGOp *op, int idx)
 /* If the binary operation has first argument @i, fold to @i. */
 static bool fold_ix_to_i(OptContext *ctx, TCGOp *op, uint64_t i)
 {
-    if (arg_is_const(op->args[1]) && arg_info(op->args[1])->val == i) {
+    if (arg_is_const_val(op->args[1], i)) {
         return tcg_opt_gen_movi(ctx, op, op->args[0], i);
     }
     return false;
@@ -963,7 +974,7 @@ static bool fold_ix_to_i(OptContext *ctx, TCGOp *op, uint64_t i)
 /* If the binary operation has first argument @i, fold to NOT. */
 static bool fold_ix_to_not(OptContext *ctx, TCGOp *op, uint64_t i)
 {
-    if (arg_is_const(op->args[1]) && arg_info(op->args[1])->val == i) {
+    if (arg_is_const_val(op->args[1], i)) {
         return fold_to_not(ctx, op, 2);
     }
     return false;
@@ -972,7 +983,7 @@ static bool fold_ix_to_not(OptContext *ctx, TCGOp *op, uint64_t i)
 /* If the binary operation has second argument @i, fold to @i. */
 static bool fold_xi_to_i(OptContext *ctx, TCGOp *op, uint64_t i)
 {
-    if (arg_is_const(op->args[2]) && arg_info(op->args[2])->val == i) {
+    if (arg_is_const_val(op->args[2], i)) {
         return tcg_opt_gen_movi(ctx, op, op->args[0], i);
     }
     return false;
@@ -981,7 +992,7 @@ static bool fold_xi_to_i(OptContext *ctx, TCGOp *op, uint64_t i)
 /* If the binary operation has second argument @i, fold to identity. */
 static bool fold_xi_to_x(OptContext *ctx, TCGOp *op, uint64_t i)
 {
-    if (arg_is_const(op->args[2]) && arg_info(op->args[2])->val == i) {
+    if (arg_is_const_val(op->args[2], i)) {
         return tcg_opt_gen_mov(ctx, op, op->args[0], op->args[1]);
     }
     return false;
@@ -990,7 +1001,7 @@ static bool fold_xi_to_x(OptContext *ctx, TCGOp *op, uint64_t i)
 /* If the binary operation has second argument @i, fold to NOT. */
 static bool fold_xi_to_not(OptContext *ctx, TCGOp *op, uint64_t i)
 {
-    if (arg_is_const(op->args[2]) && arg_info(op->args[2])->val == i) {
+    if (arg_is_const_val(op->args[2], i)) {
         return fold_to_not(ctx, op, 1);
     }
     return false;
@@ -1223,8 +1234,8 @@ static bool fold_brcond2(OptContext *ctx, TCGOp *op)
          * Simplify LT/GE comparisons vs zero to a single compare
          * vs the high word of the input.
          */
-        if (arg_is_const(op->args[2]) && arg_info(op->args[2])->val == 0 &&
-            arg_is_const(op->args[3]) && arg_info(op->args[3])->val == 0) {
+        if (arg_is_const_val(op->args[2], 0) &&
+            arg_is_const_val(op->args[3], 0)) {
             goto do_brcond_high;
         }
         break;
@@ -1448,9 +1459,7 @@ static bool fold_deposit(OptContext *ctx, TCGOp *op)
     }
 
     /* Inserting a value into zero at offset 0. */
-    if (arg_is_const(op->args[1])
-        && arg_info(op->args[1])->val == 0
-        && op->args[3] == 0) {
+    if (arg_is_const_val(op->args[1], 0) && op->args[3] == 0) {
         uint64_t mask = MAKE_64BIT_MASK(0, op->args[4]);
 
         op->opc = and_opc;
@@ -1461,8 +1470,7 @@ static bool fold_deposit(OptContext *ctx, TCGOp *op)
     }
 
     /* Inserting zero into a value. */
-    if (arg_is_const(op->args[2])
-        && arg_info(op->args[2])->val == 0) {
+    if (arg_is_const_val(op->args[2], 0)) {
         uint64_t mask = deposit64(-1, op->args[3], op->args[4], 0);
 
         op->opc = and_opc;
@@ -2000,8 +2008,8 @@ static bool fold_setcond2(OptContext *ctx, TCGOp *op)
          * Simplify LT/GE comparisons vs zero to a single compare
          * vs the high word of the input.
          */
-        if (arg_is_const(op->args[3]) && arg_info(op->args[3])->val == 0 &&
-            arg_is_const(op->args[4]) && arg_info(op->args[4])->val == 0) {
+        if (arg_is_const_val(op->args[3], 0) &&
+            arg_is_const_val(op->args[4], 0)) {
             goto do_setcond_high;
         }
         break;