| ; RUN: opt %loadPolly -polly-dependences -analyze < %s | FileCheck %s |
| ; |
| ; CHECK: RAW dependences: |
| ; CHECK-NEXT: { Stmt_S0[i0] -> Stmt_S1[o0, i0 - o0] : i0 <= 1023 and 0 <= o0 <= i0; Stmt_S1[i0, i1] -> Stmt_S2[-1 + i0 + i1] : 0 <= i0 <= 1023 and i1 >= 0 and -i0 < i1 <= 1024 - i0 and i1 <= 1023 } |
| ; CHECK-NEXT: WAR dependences: |
| ; CHECK-NEXT: { Stmt_S2[i0] -> Stmt_S2[1 + i0] : 0 <= i0 <= 1022; Stmt_S1[i0, i1] -> Stmt_S2[i0 + i1] : i0 >= 0 and 0 <= i1 <= 1023 - i0 } |
| ; CHECK-NEXT: WAW dependences: |
| ; CHECK-NEXT: { Stmt_S0[i0] -> Stmt_S1[o0, i0 - o0] : i0 <= 1023 and 0 <= o0 <= i0; Stmt_S1[i0, i1] -> Stmt_S2[i0 + i1] : i0 >= 0 and 0 <= i1 <= 1023 - i0 } |
| ; CHECK-NEXT: Reduction dependences: |
| ; CHECK-NEXT: { Stmt_S1[i0, i1] -> Stmt_S1[1 + i0, -1 + i1] : 0 <= i0 <= 1022 and 0 < i1 <= 1023 } |
| ; |
| ; void f(int *sum) { |
| ; for (int i = 0; i < 1024; i++) |
| ; S0: sum[i] = 0; |
| ; for (int i = 0; i < 1024; i++) |
| ; for (int j = 0; j < 1024; j++) |
| ; S1: sum[i + j] += i; |
| ; for (int i = 0; i < 1024; i++) |
| ; S2: sum[i] = sum[i + 1] * 3; |
| ; } |
| target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64" |
| |
| define void @f(i32* %sum) { |
| entry: |
| br label %for.cond |
| |
| for.cond: ; preds = %for.inc, %entry |
| %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ] |
| %exitcond3 = icmp ne i32 %i.0, 1024 |
| br i1 %exitcond3, label %for.body, label %for.end |
| |
| for.body: ; preds = %for.cond |
| br label %S0 |
| |
| S0: ; preds = %for.body |
| %arrayidx = getelementptr inbounds i32, i32* %sum, i32 %i.0 |
| store i32 0, i32* %arrayidx, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %S0 |
| %inc = add nsw i32 %i.0, 1 |
| br label %for.cond |
| |
| for.end: ; preds = %for.cond |
| br label %for.cond2 |
| |
| for.cond2: ; preds = %for.inc13, %for.end |
| %i1.0 = phi i32 [ 0, %for.end ], [ %inc14, %for.inc13 ] |
| %exitcond2 = icmp ne i32 %i1.0, 1024 |
| br i1 %exitcond2, label %for.body4, label %for.end15 |
| |
| for.body4: ; preds = %for.cond2 |
| br label %for.cond5 |
| |
| for.cond5: ; preds = %for.inc10, %for.body4 |
| %j.0 = phi i32 [ 0, %for.body4 ], [ %inc11, %for.inc10 ] |
| %exitcond1 = icmp ne i32 %j.0, 1024 |
| br i1 %exitcond1, label %for.body7, label %for.end12 |
| |
| for.body7: ; preds = %for.cond5 |
| br label %S1 |
| |
| S1: ; preds = %for.body7 |
| %add = add nsw i32 %i1.0, %j.0 |
| %arrayidx8 = getelementptr inbounds i32, i32* %sum, i32 %add |
| %tmp = load i32, i32* %arrayidx8, align 4 |
| %add9 = add nsw i32 %tmp, %i1.0 |
| store i32 %add9, i32* %arrayidx8, align 4 |
| br label %for.inc10 |
| |
| for.inc10: ; preds = %S1 |
| %inc11 = add nsw i32 %j.0, 1 |
| br label %for.cond5 |
| |
| for.end12: ; preds = %for.cond5 |
| br label %for.inc13 |
| |
| for.inc13: ; preds = %for.end12 |
| %inc14 = add nsw i32 %i1.0, 1 |
| br label %for.cond2 |
| |
| for.end15: ; preds = %for.cond2 |
| br label %for.cond17 |
| |
| for.cond17: ; preds = %for.inc23, %for.end15 |
| %i16.0 = phi i32 [ 0, %for.end15 ], [ %inc24, %for.inc23 ] |
| %exitcond = icmp ne i32 %i16.0, 1024 |
| br i1 %exitcond, label %for.body19, label %for.end25 |
| |
| for.body19: ; preds = %for.cond17 |
| br label %S2 |
| |
| S2: ; preds = %for.body19 |
| %add20 = add nsw i32 %i16.0, 1 |
| %arrayidx21 = getelementptr inbounds i32, i32* %sum, i32 %add20 |
| %tmp4 = load i32, i32* %arrayidx21, align 4 |
| %mul = mul nsw i32 %tmp4, 3 |
| %arrayidx22 = getelementptr inbounds i32, i32* %sum, i32 %i16.0 |
| store i32 %mul, i32* %arrayidx22, align 4 |
| br label %for.inc23 |
| |
| for.inc23: ; preds = %S2 |
| %inc24 = add nsw i32 %i16.0, 1 |
| br label %for.cond17 |
| |
| for.end25: ; preds = %for.cond17 |
| ret void |
| } |