JIT: STORE_IP() before lookups

Lookups can throw exceptions and we want those reported with correct
line numbers.

Pick-to: 6.6
Fixes: QTBUG-114483
Change-Id: Ie922df8a4207bd8b3746f0f3a256f6fcac0b43d6
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/auto/qml/qqmllanguage/data/jitExceptions.qml b/tests/auto/qml/qqmllanguage/data/jitExceptions.qml
new file mode 100644
index 0000000000..c5e11af31d
--- /dev/null
+++ b/tests/auto/qml/qqmllanguage/data/jitExceptions.qml
@@ -0,0 +1,16 @@
+import QtQml
+
+QtObject {
+    function burn() {
+        return control.font
+    }
+
+    Component.onCompleted: {
+        for (var a = 0; a < 10; ++a) {
+            try { burn() } catch(e) {}
+        }
+
+        burn();
+    }
+
+}