1 files changed, 31 insertions, 0 deletions
diff --git a/test/Transforms/WholeProgramDevirt/devirt-single-impl.ll b/test/Transforms/WholeProgramDevirt/devirt-single-impl.ll
new file mode 100644
index 000000000000..7d665f534a5d
--- /dev/null
+++ b/test/Transforms/WholeProgramDevirt/devirt-single-impl.ll
@@ -0,0 +1,31 @@
+; RUN: opt -S -wholeprogramdevirt %s | FileCheck %s
+
+target datalayout = "e-p:64:64"
+target triple = "x86_64-unknown-linux-gnu"
+
+@vt1 = constant [1 x i8*] [i8* bitcast (void (i8*)* @vf to i8*)], !type !0
+@vt2 = constant [1 x i8*] [i8* bitcast (void (i8*)* @vf to i8*)], !type !0
+
+define void @vf(i8* %this) {
+  ret void
+}
+
+; CHECK: define void @call
+define void @call(i8* %obj) {
+  %vtableptr = bitcast i8* %obj to [1 x i8*]**
+  %vtable = load [1 x i8*]*, [1 x i8*]** %vtableptr
+  %vtablei8 = bitcast [1 x i8*]* %vtable to i8*
+  %p = call i1 @llvm.type.test(i8* %vtablei8, metadata !"typeid")
+  call void @llvm.assume(i1 %p)
+  %fptrptr = getelementptr [1 x i8*], [1 x i8*]* %vtable, i32 0, i32 0
+  %fptr = load i8*, i8** %fptrptr
+  %fptr_casted = bitcast i8* %fptr to void (i8*)*
+  ; CHECK: call void @vf(
+  call void %fptr_casted(i8* %obj)
+  ret void
+}
+
+declare i1 @llvm.type.test(i8*, metadata)
+declare void @llvm.assume(i1)
+
+!0 = !{i32 0, !"typeid"}