1 files changed, 68 insertions, 0 deletions
diff --git a/polly/test/ScopInfo/granularity_scalar-indep.ll b/polly/test/ScopInfo/granularity_scalar-indep.ll
new file mode 100644
index 00000000000..9a5b4341b03
--- /dev/null
+++ b/polly/test/ScopInfo/granularity_scalar-indep.ll
@@ -0,0 +1,68 @@
+; RUN: opt %loadPolly -polly-stmt-granularity=scalar-indep -polly-print-instructions -polly-scops -analyze < %s | FileCheck %s -match-full-lines
+;
+; Split a block into two independent statements that share no scalar.
+; This case has the instructions of the two statements interleaved, such that
+; splitting the BasicBlock in the middle would cause a scalar dependency.
+;
+; for (int j = 0; j < n; j += 1) {
+; body:
+;   double valA = A[0];
+;   double valB = 21.0 + 21.0;
+;   A[0] = valA;
+;   B[0] = valB;
+; }
+;
+define void @func(i32 %n, double* noalias nonnull %A, double* noalias nonnull %B) {
+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 %body, label %exit
+
+    body:
+      %valA = load double, double* %A
+      %valB = fadd double 21.0, 21.0
+      store double %valA, double* %A
+      store double %valB, double* %B
+      br label %inc
+
+inc:
+  %j.inc = add nuw nsw i32 %j, 1
+  br label %for
+
+exit:
+  br label %return
+
+return:
+  ret void
+}
+
+
+; CHECK:      Statements {
+; CHECK-NEXT:     Stmt_body
+; CHECK-NEXT:         Domain :=
+; CHECK-NEXT:             [n] -> { Stmt_body[i0] : 0 <= i0 < n };
+; CHECK-NEXT:         Schedule :=
+; CHECK-NEXT:             [n] -> { Stmt_body[i0] -> [i0, 0] };
+; CHECK-NEXT:         ReadAccess :=       [Reduction Type: NONE] [Scalar: 0]
+; CHECK-NEXT:             [n] -> { Stmt_body[i0] -> MemRef_A[0] };
+; CHECK-NEXT:         MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 0]
+; CHECK-NEXT:             [n] -> { Stmt_body[i0] -> MemRef_A[0] };
+; CHECK-NEXT:         Instructions {
+; CHECK-NEXT:               %valA = load double, double* %A
+; CHECK-NEXT:               store double %valA, double* %A
+; CHECK-NEXT:         }
+; CHECK-NEXT:     Stmt_body1
+; CHECK-NEXT:         Domain :=
+; CHECK-NEXT:             [n] -> { Stmt_body1[i0] : 0 <= i0 < n };
+; CHECK-NEXT:         Schedule :=
+; CHECK-NEXT:             [n] -> { Stmt_body1[i0] -> [i0, 1] };
+; CHECK-NEXT:         MustWriteAccess :=  [Reduction Type: NONE] [Scalar: 0]
+; CHECK-NEXT:             [n] -> { Stmt_body1[i0] -> MemRef_B[0] };
+; CHECK-NEXT:         Instructions {
+; CHECK-NEXT:               %valB = fadd double 2.100000e+01, 2.100000e+01
+; CHECK-NEXT:               store double %valB, double* %B
+; CHECK-NEXT:         }
+; CHECK-NEXT: }