1 files changed, 52 insertions, 0 deletions
diff --git a/polly/test/ScopInfo/mod_ref_read_pointer.ll b/polly/test/ScopInfo/mod_ref_read_pointer.ll
new file mode 100644
index 00000000000..fd52c9d3e11
--- /dev/null
+++ b/polly/test/ScopInfo/mod_ref_read_pointer.ll
@@ -0,0 +1,52 @@
+; RUN: opt %loadPolly -basicaa -polly-scops -analyze < %s | FileCheck %s
+; RUN: opt %loadPolly -basicaa -polly-codegen -disable-output < %s
+;
+; Check that we assume the call to func has a read on the whole A array.
+;
+; CHECK:      Stmt_for_body
+; CHECK-NEXT:   Domain :=
+; CHECK-NEXT:       { Stmt_for_body[i0] : 0 <= i0 <= 1023 };
+; CHECK-NEXT:   Schedule :=
+; CHECK-NEXT:       { Stmt_for_body[i0] -> [i0] };
+; CHECK-NEXT:   MustWriteAccess :=  [Reduction Type: NONE]
+; CHECK-NEXT:       { Stmt_for_body[i0] -> MemRef_A[2 + i0] };
+; CHECK-NEXT:   ReadAccess :=  [Reduction Type: NONE]
+; CHECK-NEXT:       { Stmt_for_body[i0] -> MemRef_A[o0] };
+;
+;    #pragma readonly
+;    int func(int *A);
+;
+;    void jd(int *A) {
+;      for (int i = 0; i < 1024; i++)
+;        A[i + 2] = func(A);
+;    }
+;
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+
+define void @jd(i32* %A) {
+entry:
+  br label %for.cond
+
+for.cond:                                         ; preds = %for.inc, %entry
+  %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
+  %exitcond = icmp ne i64 %indvars.iv, 1024
+  br i1 %exitcond, label %for.body, label %for.end
+
+for.body:                                         ; preds = %for.cond
+  %call = call i32 @func(i32* %A) #2
+  %tmp = add nsw i64 %indvars.iv, 2
+  %arrayidx = getelementptr inbounds i32, i32* %A, i64 %tmp
+  store i32 %call, i32* %arrayidx, align 4
+  br label %for.inc
+
+for.inc:                                          ; preds = %for.body
+  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+  br label %for.cond
+
+for.end:                                          ; preds = %for.cond
+  ret void
+}
+
+declare i32 @func(i32*) #1
+
+attributes #1 = { nounwind readonly }