diff mbox series

[v3,27/48] tcg/optimize: Split out fold_bswap

Message ID 20211021210539.825582-28-richard.henderson@linaro.org (mailing list archive)
State New, archived
Headers show
Series tcg: optimize redundant sign extensions | expand

Commit Message

Richard Henderson Oct. 21, 2021, 9:05 p.m. UTC 
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/optimize.c | 27 ++++++++++++++++-----------
 1 file changed, 16 insertions(+), 11 deletions(-)

Comments

Luis Fernando Fujita Pires Oct. 22, 2021, 5:36 p.m. UTC | #1 
From: Richard Henderson <richard.henderson@linaro.org>
> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>  tcg/optimize.c | 27 ++++++++++++++++-----------
>  1 file changed, 16 insertions(+), 11 deletions(-)

Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>

--
Luis Pires
Instituto de Pesquisas ELDORADO
Aviso Legal - Disclaimer <https://www.eldorado.org.br/disclaimer.html>
diff mbox series

Patch

diff --git a/tcg/optimize.c b/tcg/optimize.c
index c54f839434..77b31680f1 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -841,6 +841,17 @@  static bool fold_brcond2(OptContext *ctx, TCGOp *op)
     return false;
 }
 
+static bool fold_bswap(OptContext *ctx, TCGOp *op)
+{
+    if (arg_is_const(op->args[1])) {
+        uint64_t t = arg_info(op->args[1])->val;
+
+        t = do_constant_folding(op->opc, t, op->args[2]);
+        return tcg_opt_gen_movi(ctx, op, op->args[0], t);
+    }
+    return false;
+}
+
 static bool fold_call(OptContext *ctx, TCGOp *op)
 {
     TCGContext *s = ctx->tcg;
@@ -1727,17 +1738,6 @@  void tcg_optimize(TCGContext *s)
             }
             break;
 
-        CASE_OP_32_64(bswap16):
-        CASE_OP_32_64(bswap32):
-        case INDEX_op_bswap64_i64:
-            if (arg_is_const(op->args[1])) {
-                tmp = do_constant_folding(opc, arg_info(op->args[1])->val,
-                                          op->args[2]);
-                tcg_opt_gen_movi(&ctx, op, op->args[0], tmp);
-                continue;
-            }
-            break;
-
         default:
             break;
 
@@ -1762,6 +1762,11 @@  void tcg_optimize(TCGContext *s)
         case INDEX_op_brcond2_i32:
             done = fold_brcond2(&ctx, op);
             break;
+        CASE_OP_32_64(bswap16):
+        CASE_OP_32_64(bswap32):
+        case INDEX_op_bswap64_i64:
+            done = fold_bswap(&ctx, op);
+            break;
         CASE_OP_32_64(clz):
         CASE_OP_32_64(ctz):
             done = fold_count_zeros(&ctx, op);