Introduce cleanup scopes for "if" statements in two places:
- Outside the "if", to ensure that we destroy the condition variable
at the end of the "if" statement rather than at the end of the
block containing the "if" statement.
- Inside the "then" and "else" branches, so that we emit then- or
else-local cleanups at the end of the corresponding block when the
block is not a compound statement.
To make adding these new cleanup scopes easier (and since
switch/do/while will all need the same treatment), added the
CleanupScope RAII object to introduce a new cleanup scope and make
sure it gets cleaned up.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89773 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/condition.cpp b/test/CodeGenCXX/condition.cpp
new file mode 100644
index 0000000..f8a55d8
--- /dev/null
+++ b/test/CodeGenCXX/condition.cpp
@@ -0,0 +1,47 @@
+// RUN: clang-cc -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
+void *f();
+
+template <typename T> T* g() {
+ if (T* t = f())
+ return t;
+
+ return 0;
+}
+
+void h() {
+ void *a = g<void>();
+}
+
+struct X {
+ X();
+ ~X();
+ operator bool();
+};
+
+struct Y {
+ Y();
+ ~Y();
+};
+
+void if_destruct(int z) {
+ // Verify that the condition variable is destroyed at the end of the
+ // "if" statement.
+ // CHECK: call void @_ZN1XC1Ev
+ // CHECK: call zeroext i1 @_ZN1XcvbEv
+ if (X x = X()) {
+ // CHECK: store i32 18
+ z = 18;
+ }
+ // CHECK: call void @_ZN1XD1Ev
+ // CHECK: store i32 17
+ z = 17;
+
+ // CHECK: call void @_ZN1XC1Ev
+ if (X x = X())
+ Y y;
+ // CHECK: if.then
+ // CHECK: call void @_ZN1YC1Ev
+ // CHECK: call void @_ZN1YD1Ev
+ // CHECK: if.end
+ // CHECK: call void @_ZN1XD1Ev
+}