V4 IR: add immediate dominator re-calculation.

When removing edges, the control-flow graph changes, so some immediate
dominators might need to be updated. This change collects all candidates
and processes them in a single batch.

Change-Id: I928f42232427a84bcb9658e314dadd0bd021b12f
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/qml/compiler/qv4jsir_p.h b/src/qml/compiler/qv4jsir_p.h
index 6f42a50a72..e3499363dc 100644
--- a/src/qml/compiler/qv4jsir_p.h
+++ b/src/qml/compiler/qv4jsir_p.h
@@ -710,14 +710,16 @@ struct CJump: Stmt {
     Expr *cond; // Temp, Binop
     BasicBlock *iftrue;
     BasicBlock *iffalse;
+    BasicBlock *parent;
 
     CJump(int id): Stmt(id) {}
 
-    void init(Expr *cond, BasicBlock *iftrue, BasicBlock *iffalse)
+    void init(Expr *cond, BasicBlock *iftrue, BasicBlock *iffalse, BasicBlock *parent)
     {
         this->cond = cond;
         this->iftrue = iftrue;
         this->iffalse = iffalse;
+        this->parent = parent;
     }
 
     virtual Stmt *asTerminator() { return this; }