FIR CFG: do not assume all arguments to inline funs are called in place

Only values for non-noinline, non-crossinline, functional type parameters qualify.
2022-11-23 16:02:11 +01:00
parent 39f88b9e87
commit d66be3f82d
17 changed files with 165 additions and 112 deletions
@@ -0,0 +1,38 @@
+inline fun callsInPlaceInline(x: () -> Unit) = x()
+
+<!NOTHING_TO_INLINE!>inline<!> fun <T> any(x: T) = x
+
+<!NOTHING_TO_INLINE!>inline<!> fun noinline(noinline x: () -> Unit) = x
+
+inline fun crossinline(crossinline x: () -> Unit) = { x() }
+
+fun testInline() {
+    var x: String? = null
+    callsInPlaceInline { x = null }
+    x = ""
+    x.length // ok
+}
+
+fun testGeneric() {
+    var x: String? = ""
+    val lambda = any { x = null }
+    x = ""
+    lambda()
+    <!SMARTCAST_IMPOSSIBLE!>x<!>.length // bad
+}
+
+fun testNoinline() {
+    var x: String? = ""
+    val lambda = noinline { x = null }
+    x = ""
+    lambda()
+    <!SMARTCAST_IMPOSSIBLE!>x<!>.length // bad
+}
+
+fun testCrossinline() {
+    var x: String? = ""
+    val lambda = crossinline { x = null }
+    x = ""
+    lambda()
+    <!SMARTCAST_IMPOSSIBLE!>x<!>.length // bad
+}