misched: Fix the DAG builder to handle an undef operand at ExitSU.

[oota-llvm.git] / test / CodeGen / X86 / misched-new.ll

diff --git a/test/CodeGen/X86/misched-new.ll b/test/CodeGen/X86/misched-new.ll
index cec04b534fba38ac32ca169e560cd282ff0c0c4e..a39ea03af55edc143983955b8abb8580d48283dc 100644 (file)
--- a/test/CodeGen/X86/misched-new.ll
+++ b/test/CodeGen/X86/misched-new.ll
@@ -51,3 +51,29 @@ if.end:                                           ; preds = %if.then, %entry
 }
 
 declare void @bar(i32,i32)
+
+; Test that the DAG builder can handle an undef vreg on ExitSU.
+; CHECK: hasundef
+; CHECK: call
+
+%t0 = type { i32, i32, i8 }
+%t6 = type { i32 (...)**, %t7* }
+%t7 = type { i32 (...)** }
+
+define void @hasundef() unnamed_addr uwtable ssp align 2 {
+  %1 = alloca %t0, align 8
+  br i1 undef, label %3, label %2
+
+; <label>:2                                       ; preds = %0
+  unreachable
+
+; <label>:3                                       ; preds = %0
+  br i1 undef, label %4, label %5
+
+; <label>:4                                       ; preds = %3
+  call void undef(%t6* undef, %t0* %1)
+  unreachable
+
+; <label>:5                                       ; preds = %3
+  ret void
+}