+; RUN: opt -S < %s -jump-threading | FileCheck %s
+
+; Keep block addresses alive.
+@addresses = constant [4 x i8*] [
+ i8* blockaddress(@test1, %L1), i8* blockaddress(@test1, %L2),
+ i8* blockaddress(@test2, %L1), i8* blockaddress(@test2, %L2)
+]
+
+declare void @bar()
+declare void @baz()
+
+
+
+; Check basic jump threading for indirectbr instructions.
+
+; CHECK: void @test1
+; CHECK: br i1 %tobool, label %L1, label %indirectgoto
+; CHECK-NOT: if.else:
+; CHECK: L1:
+; CHECK: indirectbr i8* %address, [label %L1, label %L2]
+define void @test1(i32 %i, i8* %address) nounwind {
+entry:
+ %rem = srem i32 %i, 2
+ %tobool = icmp ne i32 %rem, 0
+ br i1 %tobool, label %indirectgoto, label %if.else
+
+if.else: ; preds = %entry
+ br label %indirectgoto
+
+L1: ; preds = %indirectgoto
+ call void @bar()
+ ret void
+
+L2: ; preds = %indirectgoto
+ call void @baz()
+ ret void
+
+indirectgoto: ; preds = %if.else, %entry
+ %indirect.goto.dest = phi i8* [ %address, %if.else ], [ blockaddress(@test1, %L1), %entry ]
+ indirectbr i8* %indirect.goto.dest, [label %L1, label %L2]
+}
+
+
+; Check constant folding of indirectbr
+
+; CHECK: void @test2
+; CHECK-NEXT: :
+; CHECK-NEXT: call void @bar
+; CHECK-NEXT: ret void
+define void @test2() nounwind {
+entry:
+ indirectbr i8* blockaddress(@test2, %L1), [label %L1, label %L2]
+
+L1: ; preds = %indirectgoto
+ call void @bar()
+ ret void
+
+L2: ; preds = %indirectgoto
+ call void @baz()
+ ret void
+}