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, 50 insertions, 0 deletions

diff --git a/llvm/test/Transforms/CodeExtractor/BlockAddressSelfReference.ll b/llvm/test/Transforms/CodeExtractor/BlockAddressSelfReference.ll
new file mode 100644
index 00000000000..7d5a827a358
--- /dev/null
+++ b/llvm/test/Transforms/CodeExtractor/BlockAddressSelfReference.ll
@@ -0,0 +1,50 @@
+; RUN: opt < %s -loop-extract -S | FileCheck %s
+
+@choum.addr = internal unnamed_addr constant [3 x i8*] [i8* blockaddress(@choum, %bb10), i8* blockaddress(@choum, %bb14), i8* blockaddress(@choum, %bb18)]
+
+; CHECK: define
+; no outlined function
+; CHECK-NOT: define
+
+define void @choum(i32 %arg, i32* nocapture %arg1, i32 %arg2) {
+bb:
+  %tmp = icmp sgt i32 %arg, 0
+  br i1 %tmp, label %bb3, label %bb24
+
+bb3:                                              ; preds = %bb
+  %tmp4 = sext i32 %arg2 to i64
+  %tmp5 = getelementptr inbounds [3 x i8*], [3 x i8*]* @choum.addr, i64 0, i64 %tmp4
+  %tmp6 = load i8*, i8** %tmp5
+  %tmp7 = zext i32 %arg to i64
+  br label %bb8
+
+bb8:                                              ; preds = %bb18, %bb3
+  %tmp9 = phi i64 [ 0, %bb3 ], [ %tmp22, %bb18 ]
+  indirectbr i8* %tmp6, [label %bb10, label %bb14, label %bb18]
+
+bb10:                                             ; preds = %bb8
+  %tmp11 = getelementptr inbounds i32, i32* %arg1, i64 %tmp9
+  %tmp12 = load i32, i32* %tmp11
+  %tmp13 = add nsw i32 %tmp12, 1
+  store i32 %tmp13, i32* %tmp11
+  br label %bb14
+
+bb14:                                             ; preds = %bb10, %bb8
+  %tmp15 = getelementptr inbounds i32, i32* %arg1, i64 %tmp9
+  %tmp16 = load i32, i32* %tmp15
+  %tmp17 = shl nsw i32 %tmp16, 1
+  store i32 %tmp17, i32* %tmp15
+  br label %bb18
+
+bb18:                                             ; preds = %bb14, %bb8
+  %tmp19 = getelementptr inbounds i32, i32* %arg1, i64 %tmp9
+  %tmp20 = load i32, i32* %tmp19
+  %tmp21 = add nsw i32 %tmp20, -3
+  store i32 %tmp21, i32* %tmp19
+  %tmp22 = add nuw nsw i64 %tmp9, 1
+  %tmp23 = icmp eq i64 %tmp22, %tmp7
+  br i1 %tmp23, label %bb24, label %bb8
+
+bb24:                                             ; preds = %bb18, %bb
+  ret void
+}