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, 36 insertions, 0 deletions

diff --git a/llvm/test/Transforms/CodeExtractor/BlockAddressReference.ll b/llvm/test/Transforms/CodeExtractor/BlockAddressReference.ll
new file mode 100644
index 00000000000..91f85bf3ed8
--- /dev/null
+++ b/llvm/test/Transforms/CodeExtractor/BlockAddressReference.ll
@@ -0,0 +1,36 @@
+; RUN: opt < %s -loop-extract -S | FileCheck %s
+
+@label = common local_unnamed_addr global i8* null
+
+; CHECK: define
+; no outlined function
+; CHECK-NOT: define
+define i32 @sterix(i32 %n) {
+entry:
+  %tobool = icmp ne i32 %n, 0
+  ; this blockaddress references a basic block that goes in the extracted loop
+  %cond = select i1 %tobool, i8* blockaddress(@sterix, %for.cond), i8* blockaddress(@sterix, %exit)
+  store i8* %cond, i8** @label
+  %cmp5 = icmp sgt i32 %n, 0
+  br i1 %cmp5, label %for.body, label %exit
+
+for.cond:
+  %mul = shl nsw i32 %s.06, 1
+  %exitcond = icmp eq i32 %inc, %n
+  br i1 %exitcond, label %exit.loopexit, label %for.body
+
+for.body:
+  %i.07 = phi i32 [ %inc, %for.cond ], [ 0, %entry ]
+  %s.06 = phi i32 [ %mul, %for.cond ], [ 1, %entry ]
+  %inc = add nuw nsw i32 %i.07, 1
+  br label %for.cond
+
+exit.loopexit:
+  %phitmp = icmp ne i32 %s.06, 2
+  %phitmp8 = zext i1 %phitmp to i32
+  br label %exit
+
+exit:
+  %s.1 = phi i32 [ 1, %entry ], [ %phitmp8, %exit.loopexit ]
+  ret i32 %s.1
+}