[NFC] Add another failing test on LoopSimplifyCFG

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@352026 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/LoopSimplifyCFG/update_parents.ll b/test/Transforms/LoopSimplifyCFG/update_parents.ll
new file mode 100644 (file)
index 0000000..fe2c5a5
--- /dev/null
+++ b/test/Transforms/LoopSimplifyCFG/update_parents.ll
@@ -0,0 +1,32 @@
+; XFAIL: *
+; REQUIRES: asserts
+; RUN: opt -S -enable-loop-simplifycfg-term-folding=true -loop-simplifycfg -debug-only=loop-simplifycfg -verify-loop-info -verify-dom-info -verify-loop-lcssa 2>&1 < %s | FileCheck %s
+; RUN: opt -S -enable-loop-simplifycfg-term-folding=true -passes='require<domtree>,loop(simplify-cfg)' -debug-only=loop-simplifycfg -verify-loop-info -verify-dom-info -verify-loop-lcssa 2>&1 < %s | FileCheck %s
+; RUN: opt -S -enable-loop-simplifycfg-term-folding=true -loop-simplifycfg -enable-mssa-loop-dependency=true -verify-memoryssa -debug-only=loop-simplifycfg -verify-loop-info -verify-dom-info -verify-loop-lcssa 2>&1 < %s | FileCheck %s
+
+target triple = "x86_64-unknown-linux-gnu"
+
+define void @test() {
+
+; CHECK-LABEL: @test(
+
+  br label %bb1
+
+bb1:                                              ; preds = %bb4, %0
+  br label %bb2
+
+bb2:                                              ; preds = %bb6, %bb1
+  br label %bb3
+
+bb3:                                              ; preds = %bb8, %bb3, %bb2
+  br i1 false, label %bb4, label %bb3
+
+bb4:                                              ; preds = %bb8, %bb3
+  br i1 undef, label %bb1, label %bb6
+
+bb6:                                              ; preds = %bb4
+  br i1 undef, label %bb2, label %bb8
+
+bb8:                                              ; preds = %bb6
+  br i1 true, label %bb4, label %bb3
+}