--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/polly/test/ScopInfo/infeasible-rtc.ll	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,58 @@
+; RUN: opt %loadPolly -polly-detect -analyze < %s \
+; RUN:  | FileCheck %s -check-prefix=DETECT
+
+; RUN: opt %loadPolly -polly-scops -analyze < %s \
+; RUN:  | FileCheck %s -check-prefix=SCOPS
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
+
+; DETECT: Valid Region for Scop: test1.header => test1.exit
+; SCOPS-NOT: Region: %test1.header---%test1.exit
+
+; Verify that we detect this scop, but that, due to an infeasible run-time
+; check, we refuse to model it.
+
+define void @test(i64* %a) nounwind uwtable {
+preheader:
+  br label %test1.header
+
+test1.header:
+  %i = phi i56 [ 0, %preheader ], [ %i.1, %test1.header ]
+  %tmp = zext i56 %i to i64
+  %A.addr = getelementptr i64, i64* %a, i64 %tmp
+  %A.load = load i64, i64* %A.addr, align 4
+  %A.inc = zext i56 %i to i64
+  %A.val = add nsw i64 %A.load, %A.inc
+  store i64 %A.val, i64* %A.addr, align 4
+  %i.1 = add i56 %i, 1
+  %exitcond = icmp eq i56 %i.1, 0
+  br i1 %exitcond, label %test1.exit, label %test1.header
+
+test1.exit:
+  ret void
+}
+
+; Old version of the previous test; make sure we compute the trip count
+; correctly.
+
+; SCOPS: { Stmt_header[i0] : 0 <= i0 <= 127 };
+
+define void @test2([128 x i32]* %a) nounwind uwtable {
+preheader:
+  br label %header
+
+header:
+  %i = phi i7 [ 0, %preheader ], [ %i.1, %header ]
+  %tmp = zext i7 %i to i64
+  %A.addr = getelementptr [128 x i32], [128 x i32]* %a, i64 0, i64 %tmp
+  %A.load = load i32, i32* %A.addr, align 4
+  %A.inc = zext i7 %i to i32
+  %A.val = add nsw i32 %A.load, %A.inc
+  store i32 %A.val, i32* %A.addr, align 4
+  %i.1 = add i7 %i, 1
+  %exitcond = icmp eq i7 %i.1, 0
+  br i1 %exitcond, label %exit, label %header
+
+exit:
+  ret void
+}