Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833
2019-01-23 08:21:40 +00:00
parent a7724cd563
commit 279aa8f685
28482 changed files with 3866972 additions and 44 deletions
--- a/external/llvm/test/Analysis/RegionInfo/outgoing_edge_1.ll
+++ b/external/llvm/test/Analysis/RegionInfo/outgoing_edge_1.ll
@@ -0,0 +1,39 @@
+; REQUIRES: asserts
+; RUN: opt -regions -analyze < %s | FileCheck %s
+; RUN: opt < %s -passes='print<regions>' 2>&1 | FileCheck %s
+
+; While working on improvements to region info analysis, this test
+; case caused an incorrect region bb2 => bb3 to be detected.
+
+define internal i8 @main_read() nounwind {
+bb:
+   br label %bb1
+
+bb1:
+   br i1 true, label %bb2, label %bb7
+
+bb2:
+  br i1 true, label %bb4, label %bb3
+
+bb3:
+  br i1 true, label %bb4, label %bb8
+
+bb4:
+   br label %bb5
+
+bb5:
+   br label %bb6
+
+bb6:
+   br label %bb1
+
+bb7:
+   br label %bb5
+
+bb8:
+   ret i8 1
+}
+
+; CHECK:    [0] bb => <Function Return>
+; CHECK-NEXT: [1] bb1 => bb8
+; CHECK-NEXT: End region tree