1 files changed, 79 insertions, 0 deletions
diff --git a/test/CodeGen/Hexagon/find-loop-instr.ll b/test/CodeGen/Hexagon/find-loop-instr.ll
new file mode 100644
index 000000000000..1234baf17f52
--- /dev/null
+++ b/test/CodeGen/Hexagon/find-loop-instr.ll
@@ -0,0 +1,79 @@
+; RUN: llc -march=hexagon < %s
+; REQUIRES: asserts
+
+; This code causes multiple endloop instructions to be generated for the
+; same loop. The findLoopInstr would encounter for one endloop would encounter
+; the other endloop, and return null in response. This resulted in a crash.
+;
+; Check that with the fix we are able to compile this code successfully.
+
+target triple = "hexagon"
+
+; Function Attrs: norecurse
+define void @fred() local_unnamed_addr #0 align 2 {
+b0:
+  br label %b7
+
+b1:                                               ; preds = %b9
+  br i1 undef, label %b4, label %b2
+
+b2:                                               ; preds = %b1
+  %v3 = sub i32 undef, undef
+  br label %b4
+
+b4:                                               ; preds = %b2, %b1
+  %v5 = phi i32 [ undef, %b1 ], [ %v3, %b2 ]
+  br i1 undef, label %b14, label %b6
+
+b6:                                               ; preds = %b4
+  br label %b10
+
+b7:                                               ; preds = %b0
+  br i1 undef, label %b9, label %b8
+
+b8:                                               ; preds = %b7
+  unreachable
+
+b9:                                               ; preds = %b7
+  br label %b1
+
+b10:                                              ; preds = %b21, %b6
+  %v11 = phi i32 [ %v22, %b21 ], [ %v5, %b6 ]
+  br i1 undef, label %b21, label %b12
+
+b12:                                              ; preds = %b10
+  br label %b15
+
+b13:                                              ; preds = %b21
+  br label %b14
+
+b14:                                              ; preds = %b13, %b4
+  ret void
+
+b15:                                              ; preds = %b12
+  br i1 undef, label %b16, label %b17
+
+b16:                                              ; preds = %b15
+  store i32 0, i32* undef, align 4
+  br label %b21
+
+b17:                                              ; preds = %b15
+  br label %b18
+
+b18:                                              ; preds = %b17
+  br i1 undef, label %b19, label %b20
+
+b19:                                              ; preds = %b18
+  br label %b21
+
+b20:                                              ; preds = %b18
+  store i32 0, i32* undef, align 4
+  br label %b21
+
+b21:                                              ; preds = %b20, %b19, %b16, %b10
+  %v22 = add i32 %v11, -8
+  %v23 = icmp eq i32 %v22, 0
+  br i1 %v23, label %b13, label %b10
+}
+
+attributes #0 = { norecurse "target-cpu"="hexagonv60" "target-features"="-hvx,-hvx-double,-long-calls" }