llvm-project/polly/test/ScheduleOptimizer/computeout.ll

; RUN: opt -S %loadPolly -polly-detect-unprofitable -basicaa -polly-opt-isl -polly-opt-fusion=max -polly-ast -analyze -polly-no-early-exit < %s | FileCheck %s 
; RUN: opt -S %loadPolly -polly-detect-unprofitable -basicaa -polly-opt-isl -polly-opt-fusion=max -polly-ast -analyze -polly-no-early-exit -polly-dependences-computeout=1 < %s | FileCheck %s -check-prefix=TIMEOUT
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"

;     for(i = 0; i < 100; i++ )
; S1:   A[i] = 2;
;
;     for (i = 0; i < 10; i++ )
; S2:   A[i]  = 5;
;
;     for (i = 0; i < 200; i++ )
; S3:   A[i] = 5;

define void @sequential_writes() {
entry:
  %A = alloca [200 x i32]
  br label %S1

S1:
  %indvar.1 = phi i64 [ 0, %entry ], [ %indvar.next.1, %S1 ]
  %arrayidx.1 = getelementptr [200 x i32], [200 x i32]* %A, i64 0, i64 %indvar.1
  store i32 2, i32* %arrayidx.1
  %indvar.next.1 = add i64 %indvar.1, 1
  %exitcond.1 = icmp ne i64 %indvar.next.1, 100
  br i1 %exitcond.1, label %S1, label %exit.1

exit.1:
  br label %S2

S2:
  %indvar.2 = phi i64 [ 0, %exit.1 ], [ %indvar.next.2, %S2 ]
  %arrayidx.2 = getelementptr [200 x i32], [200 x i32]* %A, i64 0, i64 %indvar.2
  store i32 5, i32* %arrayidx.2
  %indvar.next.2 = add i64 %indvar.2, 1
  %exitcond.2 = icmp ne i64 %indvar.next.2, 10
  br i1 %exitcond.2, label %S2, label %exit.2

exit.2:
  br label %S3

S3:
  %indvar.3 = phi i64 [ 0, %exit.2 ], [ %indvar.next.3, %S3 ]
  %arrayidx.3 = getelementptr [200 x i32], [200 x i32]* %A, i64 0, i64 %indvar.3
  store i32 7, i32* %arrayidx.3
  %indvar.next.3 = add i64 %indvar.3, 1
  %exitcond.3 = icmp ne i64 %indvar.next.3, 200
  br i1 %exitcond.3, label %S3 , label %exit.3

exit.3:
  ret void
}


; CHECK: for (int c0 = 0; c0 <= 199; c0 += 1) {
; CHECK:   if (c0 <= 99) {
; CHECK:     Stmt_S1(c0);
; CHECK:     if (c0 <= 9)
; CHECK:       Stmt_S2(c0);
; CHECK:   }
; CHECK:   Stmt_S3(c0);
; CHECK: }

; TIMEOUT: for (int c0 = 0; c0 <= 99; c0 += 1)
; TIMEOUT: Stmt_S1(c0);
; TIMEOUT: for (int c0 = 0; c0 <= 9; c0 += 1)
; TIMEOUT: Stmt_S2(c0);
; TIMEOUT: for (int c0 = 0; c0 <= 199; c0 += 1)
; TIMEOUT: Stmt_S3(c0);