1; RUN: opt -S %loadPolly -basic-aa -polly-dependences-analysis-type=value-based -polly-dce -polly-ast -analyze < %s | FileCheck %s -check-prefix=CHECK-DCE 2target 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" 3; A[0] = 1; 4; 5; for(i = 0; i < 100; i++ ) 6; A[i+1] = A[i] * 2; 7; 8; for (i = 0; i < 200; i++ ) 9; A[i] = B[i] * 2; 10 11define void @main() nounwind uwtable { 12 13entry: 14 %A = alloca [200 x i32], align 16 15 %B = alloca [200 x i32], align 16 16 17 %A.zero = getelementptr [200 x i32], [200 x i32]* %A, i64 0, i64 0 18 store i32 1, i32* %A.zero, align 4 19 20 br label %for.body.1 21 22for.body.1: 23 %indvar.1 = phi i64 [ 0, %entry ], [ %indvar.next.1, %for.body.1 ] 24 %indvar.next.1 = add i64 %indvar.1, 1 25 26 %A.current.1 = getelementptr [200 x i32], [200 x i32]* %A, i64 0, i64 %indvar.1 27 %val1.1 = load i32, i32* %A.current.1, align 4 28 %val2.1 = mul i32 %val1.1, 2 29 %A.next.1 = getelementptr [200 x i32], [200 x i32]* %A, i64 0, i64 %indvar.next.1 30 store i32 %val2.1, i32* %A.next.1, align 4 31 32 %exitcond.1 = icmp ne i64 %indvar.next.1, 100 33 br i1 %exitcond.1, label %for.body.1, label %exit.1 34 35exit.1: 36 br label %for.body.2 37 38for.body.2: 39 %indvar.2 = phi i64 [ 0, %exit.1 ], [ %indvar.next.2, %for.body.2 ] 40 41 %B.current.2 = getelementptr [200 x i32], [200 x i32]* %B, i64 0, i64 %indvar.2 42 %val1.2 = load i32, i32* %B.current.2, align 4 43 %val2.2 = mul i32 %val1.2, 2 44 %A.current.2 = getelementptr [200 x i32], [200 x i32]* %A, i64 0, i64 %indvar.2 45 store i32 %val2.2, i32* %A.current.2, align 4 46 47 %indvar.next.2 = add i64 %indvar.2, 1 48 %exitcond.2 = icmp ne i64 %indvar.next.2, 200 49 br i1 %exitcond.2, label %for.body.2, label %exit.3 50 51exit.3: 52 ret void 53} 54 55; CHECK-DCE: for (int c0 = 0; c0 <= 199; c0 += 1) 56; CHECK-DCE: Stmt_for_body_2(c0); 57