Imported Upstream version 5.18.0.225

Former-commit-id: 10196d987d5fc5564b9d3b33b1fdf13190f4d0b5
2018-12-21 19:01:49 +00:00
parent 32d52ae4ca
commit f32dbaf0b2
28477 changed files with 3866961 additions and 38 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