Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/test/Analysis/RegionInfo/infinite_loop_4.ll

@@ -0,0 +1,51 @@
+; REQUIRES: asserts
+; RUN: opt -regions -analyze < %s 
+; RUN: opt -regions -stats -disable-output < %s 2>&1 | FileCheck -check-prefix=STAT %s
+; RUN: opt -regions -print-region-style=bb  -analyze < %s 2>&1 | FileCheck -check-prefix=BBIT %s
+; RUN: opt -regions -print-region-style=rn  -analyze < %s 2>&1 | FileCheck -check-prefix=RNIT %s
+
+define void @normal_condition() nounwind {
+0:
+	br label %"7"
+7:
+	br i1 1, label %"1", label %"8"
+1:
+	br i1 1, label %"2", label %"3"
+2:
+	br label %"5"
+5:
+	br i1 1, label %"11", label %"12"
+11:
+        br label %"6"
+12:
+        br label %"6"
+6:
+	br i1 1, label %"2", label %"10"
+8:
+	br label %"9"
+9:
+	br i1 1, label %"13", label %"14"
+13:
+        br label %"10"
+14:
+        br label %"10"
+10:
+        br label %"8"
+3:
+	br label %"4"
+4:
+	ret void
+}
+; CHECK-NOT: =>
+; CHECK: [0] 0 => <Function Return>
+; CHECK-NEXT: [1] 2 => 10
+; CHECK_NEXT: [2] 5 => 6
+; STAT: 3 region - The # of regions
+; STAT: 1 region - The # of simple regions
+
+; BBIT: 0, 7, 1, 2, 5, 11, 6, 10, 8, 9, 13, 14, 12, 3, 4,
+; BBIT: 2, 5, 11, 6, 12,
+; BBIT: 5, 11, 12,
+; RNIT: 0, 7, 1, 2 => 10, 10, 8, 9, 13, 14, 3, 4,
+; RNIT: 2, 5 => 6, 6,
+; RNIT: 5, 11, 12,