diff mbox series

[18/48] tcg/optimize: Split out fold_brcond

Message ID 20210830062451.639572-19-richard.henderson@linaro.org
State Superseded
Headers show
Series tcg: optimize redundant sign extensions | expand

Commit Message

Richard Henderson Aug. 30, 2021, 6:24 a.m. UTC 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 tcg/optimize.c | 33 +++++++++++++++++++--------------
 1 file changed, 19 insertions(+), 14 deletions(-)

-- 
2.25.1
diff mbox series

Patch

diff --git a/tcg/optimize.c b/tcg/optimize.c
index 0ddeaf7e4f..9dfd172a34 100644
--- a/tcg/optimize.c
+++ b/tcg/optimize.c
@@ -714,6 +714,22 @@  static bool fold_andc(OptContext *ctx, TCGOp *op)
     return fold_const2(ctx, op);
 }
 
+static bool fold_brcond(OptContext *ctx, TCGOp *op)
+{
+    TCGCond cond = op->args[2];
+    int i = do_constant_folding_cond(op->opc, op->args[0], op->args[1], cond);
+
+    if (i == 0) {
+        tcg_op_remove(ctx->tcg, op);
+        return true;
+    }
+    if (i > 0) {
+        op->opc = INDEX_op_br;
+        op->args[0] = op->args[3];
+    }
+    return false;
+}
+
 static bool fold_brcond2(OptContext *ctx, TCGOp *op)
 {
     TCGCond cond = op->args[4];
@@ -1628,20 +1644,6 @@  void tcg_optimize(TCGContext *s)
             }
             break;
 
-        CASE_OP_32_64(brcond):
-            i = do_constant_folding_cond(opc, op->args[0],
-                                         op->args[1], op->args[2]);
-            if (i == 0) {
-                tcg_op_remove(s, op);
-                continue;
-            } else if (i > 0) {
-                memset(&ctx.temps_used, 0, sizeof(ctx.temps_used));
-                op->opc = opc = INDEX_op_br;
-                op->args[0] = op->args[3];
-                break;
-            }
-            break;
-
         CASE_OP_32_64(movcond):
             i = do_constant_folding_cond(opc, op->args[1],
                                          op->args[2], op->args[5]);
@@ -1724,6 +1726,9 @@  void tcg_optimize(TCGContext *s)
         CASE_OP_32_64_VEC(andc):
             done = fold_andc(&ctx, op);
             break;
+        CASE_OP_32_64(brcond):
+            done = fold_brcond(&ctx, op);
+            break;
         case INDEX_op_brcond2_i32:
             done = fold_brcond2(&ctx, op);
             break;