1 files changed, 35 insertions, 0 deletions
diff --git a/test/Transforms/LoopRotate/basic.ll b/test/Transforms/LoopRotate/basic.ll
new file mode 100644
index 0000000..b7bcb21
--- /dev/null
+++ b/test/Transforms/LoopRotate/basic.ll
@@ -0,0 +1,35 @@
+; RUN: opt -S -loop-rotate %s | FileCheck %s
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
+target triple = "x86_64-apple-darwin10.0.0"
+
+; PR5319 - The "arrayidx" gep should be hoisted, not duplicated.  We should
+; end up with one phi node.
+define void @test1() nounwind ssp {
+; CHECK: @test1
+entry:
+  %array = alloca [20 x i32], align 16
+  br label %for.cond
+
+for.cond:                                         ; preds = %for.body, %entry
+  %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
+  %cmp = icmp slt i32 %i.0, 100
+  %arrayidx = getelementptr inbounds [20 x i32]* %array, i64 0, i64 0
+  br i1 %cmp, label %for.body, label %for.end
+
+; CHECK: for.body:
+; CHECK-NEXT: phi i32 [ 0
+; CHECK-NEXT: store i32 0
+
+for.body:                                         ; preds = %for.cond
+  store i32 0, i32* %arrayidx, align 16
+  %inc = add nsw i32 %i.0, 1
+  br label %for.cond
+
+for.end:                                          ; preds = %for.cond
+  %arrayidx.lcssa = phi i32* [ %arrayidx, %for.cond ]
+  call void @g(i32* %arrayidx.lcssa) nounwind
+  ret void
+}
+
+declare void @g(i32*)
+