llvm-project

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; RUN: opt -S %loadNPMPolly "-passes=scop(polly-dce,print<polly-ast>)" < %s | FileCheck %s
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; RUN: opt -S %loadNPMPolly -aa-pipeline=basic-aa "-passes=scop(polly-dce,print<polly-ast>)" -polly-dependences-computeout=1 -disable-output < %s | FileCheck %s -check-prefix=TIMEOUT
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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"
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;     for(i = 0; i < 100; i++ )
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; S1:   A[i] = 2;
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;
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;     for (i = 0; i < 10; i++ )
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; S2:   A[i]  = 5;
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;
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;     for (i = 0; i < 200; i++ )
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; S3:   A[i] = 5;
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define void @sequential_writes() {
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entry:
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  %A = alloca [200 x i32]
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  br label %S1
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S1:
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  %indvar.1 = phi i64 [ 0, %entry ], [ %indvar.next.1, %S1 ]
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  %arrayidx.1 = getelementptr [200 x i32], ptr %A, i64 0, i64 %indvar.1
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  store i32 2, ptr %arrayidx.1
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  %indvar.next.1 = add i64 %indvar.1, 1
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  %exitcond.1 = icmp ne i64 %indvar.next.1, 100
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  br i1 %exitcond.1, label %S1, label %exit.1
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exit.1:
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  br label %S2
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S2:
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  %indvar.2 = phi i64 [ 0, %exit.1 ], [ %indvar.next.2, %S2 ]
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  %arrayidx.2 = getelementptr [200 x i32], ptr %A, i64 0, i64 %indvar.2
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  store i32 5, ptr %arrayidx.2
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  %indvar.next.2 = add i64 %indvar.2, 1
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  %exitcond.2 = icmp ne i64 %indvar.next.2, 10
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  br i1 %exitcond.2, label %S2, label %exit.2
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exit.2:
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  br label %S3
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S3:
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  %indvar.3 = phi i64 [ 0, %exit.2 ], [ %indvar.next.3, %S3 ]
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  %arrayidx.3 = getelementptr [200 x i32], ptr %A, i64 0, i64 %indvar.3
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  store i32 7, ptr %arrayidx.3
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  %indvar.next.3 = add i64 %indvar.3, 1
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  %exitcond.3 = icmp ne i64 %indvar.next.3, 200
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  br i1 %exitcond.3, label %S3 , label %exit.3
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exit.3:
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  ret void
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}
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; CHECK-NOT: Stmt_S
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; CHECK: for (int c0 = 0; c0 <= 199; c0 += 1)
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; CHECK: Stmt_S3(c0);
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; TIMEOUT: for (int c0 = 0; c0 <= 99; c0 += 1)
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; TIMEOUT: Stmt_S1(c0);
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; TIMEOUT: for (int c0 = 0; c0 <= 9; c0 += 1)
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; TIMEOUT: Stmt_S2(c0);
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; TIMEOUT: for (int c0 = 0; c0 <= 199; c0 += 1)
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; TIMEOUT: Stmt_S3(c0);
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