Don't promote asynch EH invokes of nounwind functions to calls

[oota-llvm.git] / test / Transforms / PruneEH / seh-nounwind.ll

diff --git a/test/Transforms/PruneEH/seh-nounwind.ll b/test/Transforms/PruneEH/seh-nounwind.ll
new file mode 100644 (file)
index 0000000..4b69ae4
--- /dev/null
+++ b/test/Transforms/PruneEH/seh-nounwind.ll
@@ -0,0 +1,31 @@
+; RUN: opt -S -prune-eh < %s | FileCheck %s
+
+; Don't remove invokes of nounwind functions if the personality handles async
+; exceptions. The @div function in this test can fault, even though it can't
+; throw a synchronous exception.
+
+define i32 @div(i32 %n, i32 %d) nounwind {
+entry:
+  %div = sdiv i32 %n, %d
+  ret i32 %div
+}
+
+define i32 @main() nounwind {
+entry:
+  %call = invoke i32 @div(i32 10, i32 0)
+          to label %__try.cont unwind label %lpad
+
+lpad:
+  %0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__C_specific_handler to i8*)
+          catch i8* null
+  br label %__try.cont
+
+__try.cont:
+  %retval.0 = phi i32 [ %call, %entry ], [ 0, %lpad ]
+  ret i32 %retval.0
+}
+
+; CHECK-LABEL: define i32 @main()
+; CHECK: invoke i32 @div(i32 10, i32 0)
+
+declare i32 @__C_specific_handler(...)