Revert "Temporarily Revert "Add basic loop fusion pass.""

The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552

1 files changed, 35 insertions, 0 deletions

diff --git a/llvm/test/Transforms/CorrelatedValuePropagation/pointer.ll b/llvm/test/Transforms/CorrelatedValuePropagation/pointer.ll
new file mode 100644
index 00000000000..9242d7b8aff
--- /dev/null
+++ b/llvm/test/Transforms/CorrelatedValuePropagation/pointer.ll
@@ -0,0 +1,35 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -correlated-propagation -S -o - %s | FileCheck %s
+
+; Testcase that checks that we don't end in a neverending recursion resulting in
+; a segmentation fault. The checks below verify that nothing is changed.
+
+declare dso_local i16* @f2(i16* readnone returned) local_unnamed_addr
+
+define dso_local void @f3() local_unnamed_addr {
+; CHECK-LABEL: @f3(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br label [[FOR_COND:%.*]]
+; CHECK:       for.end:
+; CHECK-NEXT:    [[CALL6:%.*]] = call i16* @f2(i16* [[CALL6]])
+; CHECK-NEXT:    br i1 false, label [[FOR_COND]], label [[FOR_COND3:%.*]]
+; CHECK:       for.cond:
+; CHECK-NEXT:    [[C_0:%.*]] = phi i16* [ undef, [[ENTRY:%.*]] ], [ [[CALL6]], [[FOR_END:%.*]] ]
+; CHECK-NEXT:    br label [[FOR_COND3]]
+; CHECK:       for.cond3:
+; CHECK-NEXT:    ret void
+;
+entry:
+  br label %for.cond
+
+for.end:
+  %call6 = call i16* @f2(i16* %call6)
+  br i1 false, label %for.cond, label %for.cond3
+
+for.cond:
+  %c.0 = phi i16* [ undef, %entry ], [ %call6, %for.end ]
+  br label %for.cond3
+
+for.cond3:
+  ret void
+}