1 files changed, 64 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Hexagon/rdf-phi-shadows.ll b/llvm/test/CodeGen/Hexagon/rdf-phi-shadows.ll
new file mode 100644
index 00000000000..f26ab9b0cef
--- /dev/null
+++ b/llvm/test/CodeGen/Hexagon/rdf-phi-shadows.ll
@@ -0,0 +1,64 @@
+; RUN: llc -march=hexagon -verify-machineinstrs < %s | FileCheck %s
+; Check that we don't crash.
+; CHECK: call printf
+target triple = "hexagon"
+
+%struct.1 = type { i16, i8, i32, i8*, i8*, i8*, i8*, i8*, i8*, i32* }
+%struct.0 = type { i32, i32, i32, i32, i32, i32, i32, i32, i32 }
+
+declare void @foo(%struct.1*, %struct.0* readonly) local_unnamed_addr #0
+declare zeroext i8 @bar() local_unnamed_addr #0
+declare i32 @printf(i8* nocapture readonly, ...) local_unnamed_addr #0
+
+@.str = private unnamed_addr constant [5 x i8] c"blah\00", align 1
+
+define i32 @main(i32 %argc, i8** nocapture readonly %argv) local_unnamed_addr #0 {
+entry:
+  %t0 = alloca %struct.0, align 4
+  br label %do.body
+
+do.body:                                          ; preds = %if.end88.do.body_crit_edge, %entry
+  %cond = icmp eq i32 undef, 0
+  br i1 %cond, label %if.end49, label %if.then124
+
+if.end49:                                         ; preds = %do.body
+  br i1 undef, label %if.end55, label %if.then53
+
+if.then53:                                        ; preds = %if.end49
+  call void @foo(%struct.1* null, %struct.0* nonnull %t0)
+  br label %if.end55
+
+if.end55:                                         ; preds = %if.then53, %if.end49
+  %call76 = call zeroext i8 @bar() #0
+  switch i8 %call76, label %sw.epilog79 [
+    i8 0, label %sw.bb77
+    i8 3, label %sw.bb77
+  ]
+
+sw.bb77:                                          ; preds = %if.end55, %if.end55
+  unreachable
+
+sw.epilog79:                                      ; preds = %if.end55
+  br i1 undef, label %if.end88, label %if.then81
+
+if.then81:                                        ; preds = %sw.epilog79
+  %div87 = fdiv float 0.000000e+00, undef
+  br label %if.end88
+
+if.end88:                                         ; preds = %if.then81, %sw.epilog79
+  %t1 = phi float [ undef, %sw.epilog79 ], [ %div87, %if.then81 ]
+  %div89 = fdiv float 1.000000e+00, %t1
+  %.sroa.speculated = select i1 undef, float 0.000000e+00, float undef
+  %conv108 = fpext float %.sroa.speculated to double
+  %call113 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i32 0, i32 0), double undef, double %conv108, i64 undef, i32 undef) #0
+  br i1 undef, label %if.end88.do.body_crit_edge, label %if.then124
+
+if.end88.do.body_crit_edge:                       ; preds = %if.end88
+  br label %do.body
+
+if.then124:                                       ; preds = %if.end88, %do.body
+  %t2 = phi float [ undef, %do.body ], [ %t1, %if.end88 ]
+  ret i32 0
+}
+
+attributes #0 = { nounwind }