--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/polly/test/ForwardOpTree/forward_reusue.ll	Tue Jun 15 19:15:29 2021 +0900
@@ -0,0 +1,65 @@
+; RUN: opt %loadPolly -polly-optree -analyze < %s | FileCheck %s -match-full-lines
+;
+; Move operand tree without duplicating values used multiple times.
+;
+define void @func(i32 %n, double* noalias nonnull %A) {
+entry:
+  br label %for
+
+for:
+  %j = phi i32 [0, %entry], [%j.inc, %inc]
+  %j.cmp = icmp slt i32 %j, %n
+  br i1 %j.cmp, label %bodyA, label %exit
+
+    bodyA:
+      %val1 = fadd double 12.5, 12.5
+      %val2 = fadd double %val1, %val1
+      %val3 = fadd double %val2, %val2
+      %val4 = fadd double %val3, %val3
+      %val5 = fadd double %val4, %val4
+      br label %bodyB
+
+    bodyB:
+      store double %val5, double* %A
+      br label %inc
+
+inc:
+  %j.inc = add nuw nsw i32 %j, 1
+  br label %for
+
+exit:
+  br label %return
+
+return:
+  ret void
+}
+
+
+; CHECK: Statistics {
+; CHECK:     Instructions copied: 5
+; CHECK:     Operand trees forwarded: 1
+; CHECK: }
+
+; CHECK:      After statements {
+; CHECK-NEXT:     Stmt_bodyA
+; CHECK-NEXT:             MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 1]
+; CHECK-NEXT:                 [n] -> { Stmt_bodyA[i0] -> MemRef_val5[] };
+; CHECK-NEXT:             Instructions {
+; CHECK-NEXT:                   %val1 = fadd double 1.250000e+01, 1.250000e+01
+; CHECK-NEXT:                   %val2 = fadd double %val1, %val1
+; CHECK-NEXT:                   %val3 = fadd double %val2, %val2
+; CHECK-NEXT:                   %val4 = fadd double %val3, %val3
+; CHECK-NEXT:                   %val5 = fadd double %val4, %val4
+; CHECK-NEXT:             }
+; CHECK-NEXT:     Stmt_bodyB
+; CHECK-NEXT:             MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 0]
+; CHECK-NEXT:                 [n] -> { Stmt_bodyB[i0] -> MemRef_A[0] };
+; CHECK-NEXT:             Instructions {
+; CHECK-NEXT:                   %val1 = fadd double 1.250000e+01, 1.250000e+01
+; CHECK-NEXT:                   %val2 = fadd double %val1, %val1
+; CHECK-NEXT:                   %val3 = fadd double %val2, %val2
+; CHECK-NEXT:                   %val4 = fadd double %val3, %val3
+; CHECK-NEXT:                   %val5 = fadd double %val4, %val4
+; CHECK-NEXT:                   store double %val5, double* %A, align 8
+; CHECK-NEXT:             }
+; CHECK-NEXT: }