1 files changed, 77 insertions, 0 deletions
diff --git a/polly/test/ForwardOpTree/forward_transitive.ll b/polly/test/ForwardOpTree/forward_transitive.ll
new file mode 100644
index 00000000000..b45b4662116
--- /dev/null
+++ b/polly/test/ForwardOpTree/forward_transitive.ll
@@ -0,0 +1,77 @@
+; RUN: opt %loadPolly -polly-optree -analyze < %s | FileCheck %s -match-full-lines
+;
+; Move %v and %val to %bodyB, so %bodyA can be removed (by -polly-simplify)
+;
+; for (int j = 0; j < n; j += 1) {
+; bodyA:
+;   double val1 = 12.5 + 12.5;
+;
+; bodyB:
+;   double val2 = 21.0 + 21.0;
+;
+; bodyC:
+;   A[0] = val2;
+; }
+;
+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
+      br label %bodyB
+
+    bodyB:
+      %val2 = fadd double %val1, 21.0
+      br label %bodyC
+
+    bodyC:
+      store double %val2, 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: 3
+; CHECK:     Operand trees forwarded: 2
+; CHECK:     Statements with forwarded operand trees: 2
+; CHECK: }
+
+; CHECK:      After statements {
+; CHECK-NEXT:     Stmt_bodyA
+; CHECK-NEXT:             MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 1]
+; CHECK-NEXT:                 [n] -> { Stmt_bodyA[i0] -> MemRef_val1[] };
+; CHECK-NEXT:             Instructions {
+; CHECK-NEXT:                   %val1 = fadd double 1.250000e+01, 1.250000e+01
+; CHECK-NEXT:             }
+; CHECK-NEXT:     Stmt_bodyB
+; CHECK-NEXT:             MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 1]
+; CHECK-NEXT:                 [n] -> { Stmt_bodyB[i0] -> MemRef_val2[] };
+; CHECK-NEXT:             Instructions {
+; CHECK-NEXT:                   %val1 = fadd double 1.250000e+01, 1.250000e+01
+; CHECK-NEXT:                   %val2 = fadd double %val1, 2.100000e+01
+; CHECK-NEXT:             }
+; CHECK-NEXT:     Stmt_bodyC
+; CHECK-NEXT:             MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 0]
+; CHECK-NEXT:                 [n] -> { Stmt_bodyC[i0] -> MemRef_A[0] };
+; CHECK-NEXT:             Instructions {
+; CHECK-NEXT:                   %val1 = fadd double 1.250000e+01, 1.250000e+01
+; CHECK-NEXT:                   %val2 = fadd double %val1, 2.100000e+01
+; CHECK-NEXT:                   store double %val2, double* %A
+; CHECK-NEXT:             }
+; CHECK-NEXT: }