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-rw-r--r--llvm/test/CodeGen/Hexagon/swp-fix-last-use.ll32
1 files changed, 32 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Hexagon/swp-fix-last-use.ll b/llvm/test/CodeGen/Hexagon/swp-fix-last-use.ll
new file mode 100644
index 00000000000..877c2c9ba1c
--- /dev/null
+++ b/llvm/test/CodeGen/Hexagon/swp-fix-last-use.ll
@@ -0,0 +1,32 @@
+; RUN: llc -march=hexagon -enable-pipeliner < %s
+; REQUIRES: asserts
+
+; We need to rename uses that occurs after the loop.
+
+define void @f0() #0 {
+b0:
+ br i1 undef, label %b1, label %b5
+
+b1: ; preds = %b0
+ br i1 undef, label %b2, label %b4
+
+b2: ; preds = %b2, %b1
+ %v0 = phi i32 [ %v1, %b2 ], [ 1, %b1 ]
+ store i16 0, i16* undef, align 2
+ store i16 0, i16* undef, align 2
+ %v1 = add nsw i32 %v0, 4
+ %v2 = icmp slt i32 %v1, undef
+ br i1 %v2, label %b2, label %b3
+
+b3: ; preds = %b2
+ %v3 = icmp eq i32 %v1, undef
+ br i1 %v3, label %b5, label %b4
+
+b4: ; preds = %b4, %b3, %b1
+ br i1 undef, label %b5, label %b4
+
+b5: ; preds = %b4, %b3, %b0
+ ret void
+}
+
+attributes #0 = { nounwind "target-cpu"="hexagonv55" }
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