delinearization of arrays

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194527 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 65 insertions, 0 deletions

diff --git a/test/Analysis/Delinearization/multidim_only_ivs_3d.ll b/test/Analysis/Delinearization/multidim_only_ivs_3d.ll
new file mode 100644
index 0000000..24f9583
--- /dev/null
+++ b/test/Analysis/Delinearization/multidim_only_ivs_3d.ll
@@ -0,0 +1,65 @@
+; RUN: opt < %s -analyze -delinearize | FileCheck %s
+
+; void foo(long n, long m, long o, double A[n][m][o]) {
+;
+;   for (long i = 0; i < n; i++)
+;     for (long j = 0; j < m; j++)
+;       for (long k = 0; k < o; k++)
+;         A[i][j][k] = 1.0;
+; }
+
+; AddRec: {{{%A,+,(8 * %m * %o)}<%for.i>,+,(8 * %o)}<%for.j>,+,8}<%for.k>
+; CHECK: Base offset: %A
+; CHECK: ArrayDecl[UnknownSize][%m][%o] with elements of sizeof(double) bytes.
+; CHECK: ArrayRef[{0,+,1}<nuw><nsw><%for.i>][{0,+,1}<nuw><nsw><%for.j>][{0,+,1}<nuw><nsw><%for.k>]
+
+; AddRec: {{(-8 + (8 * %o) + %A),+,(8 * %m * %o)}<%for.i>,+,(8 * %o)}<%for.j>
+; CHECK: Base offset: %A
+; CHECK: ArrayDecl[UnknownSize][(%m * %o)] with elements of sizeof(double) bytes.
+; CHECK: ArrayRef[{0,+,1}<nuw><nsw><%for.i>][{(-1 + %o),+,%o}<%for.j>]
+
+; AddRec: {(-8 + (8 * %m * %o) + %A),+,(8 * %m * %o)}<%for.i>
+; CHECK: Base offset: %A
+; CHECK: ArrayDecl[UnknownSize] with elements of sizeof(double) bytes.
+; CHECK: ArrayRef[{(-1 + (%m * %o)),+,(%m * %o)}<%for.i>]
+
+define void @foo(i64 %n, i64 %m, i64 %o, double* %A) {
+entry:
+  br label %for.i
+
+for.i:
+  %i = phi i64 [ 0, %entry ], [ %i.inc, %for.i.inc ]
+  br label %for.j
+
+for.j:
+  %j = phi i64 [ 0, %for.i ], [ %j.inc, %for.j.inc ]
+  br label %for.k
+
+for.k:
+  %k = phi i64 [ 0, %for.j ], [ %k.inc, %for.k.inc ]
+  %subscript0 = mul i64 %i, %m
+  %subscript1 = add i64 %j, %subscript0
+  %subscript2 = mul i64 %subscript1, %o
+  %subscript = add i64 %subscript2, %k
+  %idx = getelementptr inbounds double* %A, i64 %subscript
+  store double 1.0, double* %idx
+  br label %for.k.inc
+
+for.k.inc:
+  %k.inc = add nsw i64 %k, 1
+  %k.exitcond = icmp eq i64 %k.inc, %o
+  br i1 %k.exitcond, label %for.j.inc, label %for.k
+
+for.j.inc:
+  %j.inc = add nsw i64 %j, 1
+  %j.exitcond = icmp eq i64 %j.inc, %m
+  br i1 %j.exitcond, label %for.i.inc, label %for.j
+
+for.i.inc:
+  %i.inc = add nsw i64 %i, 1
+  %i.exitcond = icmp eq i64 %i.inc, %n
+  br i1 %i.exitcond, label %end, label %for.i
+
+end:
+  ret void
+}