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-rw-r--r--tests/auto/qml/qmlcppcodegen/data/conversionInDeadCode.qml32
1 files changed, 32 insertions, 0 deletions
diff --git a/tests/auto/qml/qmlcppcodegen/data/conversionInDeadCode.qml b/tests/auto/qml/qmlcppcodegen/data/conversionInDeadCode.qml
new file mode 100644
index 0000000000..b2e7b40c00
--- /dev/null
+++ b/tests/auto/qml/qmlcppcodegen/data/conversionInDeadCode.qml
@@ -0,0 +1,32 @@
+pragma Strict
+import QtQml
+
+QtObject {
+ // This does not look like dead code, but each access to 'result' generates a
+ // DeadTemoralZoneCheck instruction that we ignore when compiling to C++
+ // after checking statically that 'result' is alive throughout the function.
+ // Therefore, this function is a torture test for the dead code elimination.
+ function calc(a: int, b: int) : int {
+ let result = a;
+ if (b < 0) {
+ if (b < -1)
+ result -= b;
+ if (b < -2)
+ result /= b;
+ } else {
+ if (b > 1)
+ result *= b;
+ if (b > 2)
+ result += b;
+ }
+ return result;
+ }
+
+ property int a: calc(10, -3);
+ property int b: calc(10, -2);
+ property int c: calc(10, -1);
+ property int d: calc(10, 0);
+ property int e: calc(10, 1);
+ property int f: calc(10, 2);
+ property int g: calc(10, 3);
+}