1 files changed, 30 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Hexagon/swp-rename.ll b/llvm/test/CodeGen/Hexagon/swp-rename.ll
new file mode 100644
index 00000000000..7f5060134f4
--- /dev/null
+++ b/llvm/test/CodeGen/Hexagon/swp-rename.ll
@@ -0,0 +1,30 @@
+; RUN: llc -march=hexagon -enable-pipeliner < %s | FileCheck %s
+
+; A test that the Phi rewrite logic is correct.
+
+; CHECK: [[REG0:(r[0-9]+)]] = #0
+; CHECK: loop0(.LBB0_[[LOOP:.]],
+; CHECK: .LBB0_[[LOOP]]:
+; CHECK: memh([[REG0]]+#0) = #0
+
+define void @f0() #0 {
+b0:
+  %v0 = add i32 undef, -4
+  br label %b1
+
+b1:                                               ; preds = %b1, %b0
+  %v1 = phi i16* [ %v4, %b1 ], [ null, %b0 ]
+  %v2 = phi i32 [ %v5, %b1 ], [ 0, %b0 ]
+  %v3 = getelementptr inbounds i16, i16* %v1, i32 1
+  store i16 0, i16* %v1, align 2
+  %v4 = getelementptr inbounds i16, i16* %v1, i32 2
+  store i16 0, i16* %v3, align 2
+  %v5 = add nsw i32 %v2, 8
+  %v6 = icmp slt i32 %v5, %v0
+  br i1 %v6, label %b1, label %b2
+
+b2:                                               ; preds = %b1
+  ret void
+}
+
+attributes #0 = { nounwind "target-cpu"="hexagonv55" }