1 files changed, 37 insertions, 0 deletions
diff --git a/test/CodeGen/Hexagon/early-if-vecpred.ll b/test/CodeGen/Hexagon/early-if-vecpred.ll
new file mode 100644
index 000000000000..ca119e1d1dec
--- /dev/null
+++ b/test/CodeGen/Hexagon/early-if-vecpred.ll
@@ -0,0 +1,37 @@
+; RUN: llc -march=hexagon < %s | FileCheck %s
+; REQUIRES: asserts
+
+; Hexagon early if-conversion used to crash on this testcase due to not
+; recognizing vector predicate registers.
+
+target triple = "hexagon"
+
+; Check that the early if-conversion has not happened.
+
+; CHECK-LABEL: fred
+; CHECK: q{{[0-3]}} = not
+; CHECK: LBB
+; CHECK: if (q{{[0-3]}}) vmem
+define void @fred(i32 %a0) #0 {
+b1:
+  %v2 = tail call <1024 x i1> @llvm.hexagon.V6.pred.scalar2.128B(i32 %a0) #2
+  br i1 undef, label %b3, label %b5
+
+b3:                                               ; preds = %b1
+  %v4 = tail call <1024 x i1> @llvm.hexagon.V6.pred.not.128B(<1024 x i1> %v2) #2
+  br label %b5
+
+b5:                                               ; preds = %b3, %b1
+  %v6 = phi <1024 x i1> [ %v4, %b3 ], [ %v2, %b1 ]
+  %v7 = bitcast <1024 x i1> %v6 to <32 x i32>
+  tail call void asm sideeffect "if ($0) vmem($1) = $2;", "q,r,v,~{memory}"(<32 x i32> %v7, <32 x i32>* undef, <32 x i32> undef) #2
+  ret void
+}
+
+declare <1024 x i1> @llvm.hexagon.V6.pred.scalar2.128B(i32) #1
+declare <1024 x i1> @llvm.hexagon.V6.pred.not.128B(<1024 x i1>) #1
+
+attributes #0 = { nounwind "target-cpu"="hexagonv60" "target-features"="+hvx,+hvx-double" }
+attributes #1 = { nounwind readnone }
+attributes #2 = { nounwind }
+