llvm/polly/test/ScopDetect/indvars.ll

; RUN: opt %loadNPMPolly '-passes=print<polly-detect>,scop(polly-codegen)' -disable-output < %s 2>&1 | FileCheck %s
;
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"

define void @main(ptr %A, ptr %B) nounwind {
entry:
  br label %for.i

for.i:
  %indvar.i = phi i64 [ 0, %entry ], [ %indvar.next.i, %for.i.backedge ]
  %indvar.next.i = add i64 %indvar.i, 1
  %scevgep = getelementptr i64, ptr %A, i64 %indvar.i
  store i64 %indvar.i, ptr %scevgep, align 4
  br i1 true, label %for.j.preheader, label %for.j2

for.j.preheader:
  br label %for.j

for.j:
  %indvar.j = phi i64 [ %indvar.next.j, %for.j ], [ 0, %for.j.preheader ]
  %indvar.next.j = add i64 %indvar.j, 1
  %scevgep2 = getelementptr i64, ptr %B, i64 %indvar.j
  store i64 %indvar.j, ptr %scevgep2, align 4
  %exitcond.j = icmp eq i64 %indvar.next.j, 10
  br i1 %exitcond.j, label %for.j2, label %for.j

for.j2:
  fence seq_cst
  br label %for.i.backedge

for.i.backedge:
  %exitcond.i = icmp eq i64 %indvar.next.i, 2048
  br i1 %exitcond.i, label %for.i, label %.end

.end:
  ret void
}

; CHECK: Valid Region for Scop: for.i => for.j2