Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/polly/test/ScopInfo/isl_trip_count_02.ll

@@ -0,0 +1,35 @@
+; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
+;
+; TODO: We do not allow unbounded loops at the moment.
+;
+; CHECK-NOT: Stmt_for_body
+;
+;   void f(int *A, int N, int M) {
+;     for (int i = M; i > N; i++)
+;       A[i] = i;
+;   }
+;
+target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
+
+define void @f(i32* %A, i32 %N, i32 %M) {
+entry:
+  br label %entry.split
+
+entry.split:
+  %cmp.1 = icmp sgt i32 %M, %N
+  br i1 %cmp.1, label %for.body, label %for.end
+
+for.body:
+  %indvars.iv = phi i32 [ %indvars.iv.next, %for.body ], [ %M, %entry.split ]
+  %arrayidx = getelementptr inbounds i32, i32* %A, i32 %indvars.iv
+  store i32 %indvars.iv, i32* %arrayidx, align 4
+  %cmp = icmp slt i32 %M, %N
+  %indvars.iv.next = add i32 %indvars.iv, 1
+  br i1 %cmp, label %for.cond.for.end_crit_edge, label %for.body
+
+for.cond.for.end_crit_edge:
+  br label %for.end
+
+for.end:
+  ret void
+}