| ; RUN: opt %loadPolly -polly-dependences -analyze < %s | FileCheck %s |
| ; |
| ; CHECK: RAW dependences: |
| ; CHECK-NEXT: { Stmt_S2[i0, i1] -> Stmt_S1[i1] : i0 >= 0 and i0 < i1 <= 98; Stmt_S1[i0] -> Stmt_S2[i0, i0] : 0 <= i0 <= 98; Stmt_S2[i0, i0] -> Stmt_S3[i0] : 0 <= i0 <= 98; Stmt_S3[i0] -> Stmt_S2[o0, i0] : i0 >= 0 and i0 < o0 <= 98 } |
| ; CHECK-NEXT: WAR dependences: |
| ; CHECK-NEXT: { Stmt_S2[i0, i1] -> Stmt_S1[i1] : i0 >= 0 and i0 < i1 <= 98; Stmt_S1[i0] -> Stmt_S2[i0, i0] : 0 <= i0 <= 98; Stmt_S2[i0, i0] -> Stmt_S3[i0] : 0 <= i0 <= 98; Stmt_S3[i0] -> Stmt_S2[o0, i0] : i0 >= 0 and i0 < o0 <= 98 } |
| ; CHECK-NEXT: WAW dependences: |
| ; CHECK-NEXT: { Stmt_S2[i0, i1] -> Stmt_S1[i1] : i0 >= 0 and i0 < i1 <= 98; Stmt_S1[i0] -> Stmt_S2[i0, i0] : 0 <= i0 <= 98; Stmt_S2[i0, i0] -> Stmt_S3[i0] : 0 <= i0 <= 98; Stmt_S3[i0] -> Stmt_S2[o0, i0] : i0 >= 0 and i0 < o0 <= 98 } |
| ; CHECK-NEXT: Reduction dependences: |
| ; CHECK-NEXT: { Stmt_S2[i0, i1] -> Stmt_S2[1 + i0, i1] : (i0 >= 0 and 2 + i0 <= i1 <= 99) or (i0 <= 97 and 0 <= i1 < i0) } |
| ; |
| ; void f(int *sum) { |
| ; for (int i = 0; i < 99; i++) { |
| ; S1: sum[i] += 42; |
| ; for (int j = 0; j < 100; j++) |
| ; S2: sum[j] += i * j; |
| ; S3: sum[i] += 7; |
| ; } |
| ; } |
| ; |
| 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.inc8, %entry |
| %i.0 = phi i32 [ 0, %entry ], [ %inc9, %for.inc8 ] |
| %exitcond1 = icmp ne i32 %i.0, 99 |
| br i1 %exitcond1, label %for.body, label %for.end10 |
| |
| for.body: ; preds = %for.cond |
| br label %S1 |
| |
| S1: ; preds = %for.body |
| %arrayidx = getelementptr inbounds i32, i32* %sum, i32 %i.0 |
| %tmp = load i32, i32* %arrayidx, align 4 |
| %add = add nsw i32 %tmp, 42 |
| store i32 %add, i32* %arrayidx, align 4 |
| br label %for.cond1 |
| |
| for.cond1: ; preds = %for.inc, %S1 |
| %j.0 = phi i32 [ 0, %S1 ], [ %inc, %for.inc ] |
| %exitcond = icmp ne i32 %j.0, 100 |
| br i1 %exitcond, label %for.body3, label %for.end |
| |
| for.body3: ; preds = %for.cond1 |
| br label %S2 |
| |
| S2: ; preds = %for.body3 |
| %mul = mul nsw i32 %i.0, %j.0 |
| %arrayidx4 = getelementptr inbounds i32, i32* %sum, i32 %j.0 |
| %tmp2 = load i32, i32* %arrayidx4, align 4 |
| %add5 = add nsw i32 %tmp2, %mul |
| store i32 %add5, i32* %arrayidx4, align 4 |
| br label %for.inc |
| |
| for.inc: ; preds = %S2 |
| %inc = add nsw i32 %j.0, 1 |
| br label %for.cond1 |
| |
| for.end: ; preds = %for.cond1 |
| br label %S3 |
| |
| S3: ; preds = %for.end |
| %arrayidx6 = getelementptr inbounds i32, i32* %sum, i32 %i.0 |
| %tmp3 = load i32, i32* %arrayidx6, align 4 |
| %add7 = add nsw i32 %tmp3, 7 |
| store i32 %add7, i32* %arrayidx6, align 4 |
| br label %for.inc8 |
| |
| for.inc8: ; preds = %S3 |
| %inc9 = add nsw i32 %i.0, 1 |
| br label %for.cond |
| |
| for.end10: ; preds = %for.cond |
| ret void |
| } |