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, 37 insertions, 0 deletions

diff --git a/llvm/test/Transforms/IndVarSimplify/pr25060.ll b/llvm/test/Transforms/IndVarSimplify/pr25060.ll
new file mode 100644
index 00000000000..25863fff2d3
--- /dev/null
+++ b/llvm/test/Transforms/IndVarSimplify/pr25060.ll
@@ -0,0 +1,37 @@
+; RUN: opt -S -indvars < %s | FileCheck %s
+
+define i16 @fn1() {
+; CHECK-LABEL: @fn1(
+entry:
+  br label %bb1
+
+bb1:
+  %i = phi i16 [ 0, %entry ], [ 1, %bb1 ]
+  %storemerge = phi i16 [ %storemerge2, %bb1 ], [ 0, %entry ]
+  %storemerge2 = phi i16 [ 10, %entry ], [ 200, %bb1 ]
+  %tmp10 = icmp eq i16 %i, 1
+  br i1 %tmp10, label %bb5, label %bb1
+
+bb5:
+  %storemerge.lcssa = phi i16 [ %storemerge, %bb1 ]
+; CHECK: ret i16 10
+  ret i16 %storemerge.lcssa
+}
+
+define i16 @fn2() {
+; CHECK-LABEL: @fn2(
+entry:
+  br label %bb1
+
+bb1:
+  %canary = phi i16 [ 0, %entry ], [ %canary.inc, %bb1 ]
+  %i = phi i16 [ 0, %entry ], [ %storemerge, %bb1 ]
+  %storemerge = phi i16 [ 0, %bb1 ], [ 10, %entry ]
+  %canary.inc = add i16 %canary, 1
+  %_tmp10 = icmp eq i16 %i, 10
+  br i1 %_tmp10, label %bb5, label %bb1
+
+bb5:
+; CHECK: ret i16 1
+  ret i16 %canary
+}