tcg/optimize: Split out fold_mov

This is the final entry in the main switch that was in a
different form.  After this, we have the option to convert
the switch into a function dispatch table.

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

diff --git a/tcg/optimize.c b/tcg/optimize.c
index 8524fe1f8a6d7bd8b6cce5c037e63c4945c0b47d..5f1bd7cd78bfc1a9564ad8042304268778e97352 100644 (file)
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -1015,6 +1015,11 @@ static bool fold_mb(OptContext *ctx, TCGOp *op)
     return true;
 }
 
+static bool fold_mov(OptContext *ctx, TCGOp *op)
+{
+    return tcg_opt_gen_mov(ctx, op, op->args[0], op->args[1]);
+}
+
 static bool fold_movcond(OptContext *ctx, TCGOp *op)
 {
     TCGOpcode opc = op->opc;
@@ -1748,20 +1753,11 @@ void tcg_optimize(TCGContext *s)
             break;
         }
 
-        /* Propagate constants through copy operations and do constant
-           folding.  Constants will be substituted to arguments by register
-           allocator where needed and possible.  Also detect copies. */
+        /*
+         * Process each opcode.
+         * Sorted alphabetically by opcode as much as possible.
+         */
         switch (opc) {
-        CASE_OP_32_64_VEC(mov):
-            done = tcg_opt_gen_mov(&ctx, op, op->args[0], op->args[1]);
-            break;
-
-        default:
-            break;
-
-        /* ---------------------------------------------------------- */
-        /* Sorted alphabetically by opcode as much as possible. */
-
         CASE_OP_32_64_VEC(add):
             done = fold_add(&ctx, op);
             break;
@@ -1831,6 +1827,9 @@ void tcg_optimize(TCGContext *s)
         case INDEX_op_mb:
             done = fold_mb(&ctx, op);
             break;
+        CASE_OP_32_64_VEC(mov):
+            done = fold_mov(&ctx, op);
+            break;
         CASE_OP_32_64(movcond):
             done = fold_movcond(&ctx, op);
             break;
@@ -1900,6 +1899,8 @@ void tcg_optimize(TCGContext *s)
         CASE_OP_32_64_VEC(xor):
             done = fold_xor(&ctx, op);
             break;
+        default:
+            break;
         }
 
         if (!done) {