| ; RUN: opt -basicaa %loadPolly -polly-dependences -analyze < %s | FileCheck %s |
| ; RUN: opt -basicaa %loadPolly -polly-dependences -polly-dependences-analysis-level=reference-wise -analyze < %s | FileCheck %s |
| ; RUN: opt -basicaa %loadPolly -polly-dependences -polly-dependences-analysis-level=access-wise -analyze < %s | FileCheck %s |
| ; |
| ; Verify that only the inner reduction like accesses cause reduction dependences |
| ; |
| ; CHECK: Reduction dependences: |
| ; CHECK-NEXT: { Stmt_for_body3[i0, i1] -> Stmt_for_body3[i0, 1 + i1] : 0 <= i0 <= 99 and 0 <= i1 <= 98 } |
| ; |
| ; void f(int * restrict A, int * restrict sum) { |
| ; int i, j, k; |
| ; for (i = 0; i < 100; i++) { |
| ; *sum *= 7; |
| ; for (j = 0; j < 100; j++) { |
| ; *sum += A[i+j]; |
| ; for (k = 0; k< 100; k++) {} |
| ; } |
| ; } |
| ; } |
| target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64" |
| |
| define void @f(i32* noalias %A, i32* noalias %sum) { |
| entry: |
| br label %for.cond |
| |
| for.cond: ; preds = %for.inc11, %entry |
| %i.0 = phi i32 [ 0, %entry ], [ %inc12, %for.inc11 ] |
| %exitcond2 = icmp ne i32 %i.0, 100 |
| br i1 %exitcond2, label %for.body, label %for.end13 |
| |
| for.body: ; preds = %for.cond |
| %tmp = load i32, i32* %sum, align 4 |
| %mul = mul nsw i32 %tmp, 7 |
| store i32 %mul, i32* %sum, align 4 |
| br label %for.cond1 |
| |
| for.cond1: ; preds = %for.inc8, %for.body |
| %j.0 = phi i32 [ 0, %for.body ], [ %inc9, %for.inc8 ] |
| %exitcond1 = icmp ne i32 %j.0, 100 |
| br i1 %exitcond1, label %for.body3, label %for.end10 |
| |
| for.body3: ; preds = %for.cond1 |
| %add = add nsw i32 %i.0, %j.0 |
| %arrayidx = getelementptr inbounds i32, i32* %A, i32 %add |
| %tmp3 = load i32, i32* %arrayidx, align 4 |
| %tmp4 = load i32, i32* %sum, align 4 |
| %add4 = add nsw i32 %tmp4, %tmp3 |
| store i32 %add4, i32* %sum, align 4 |
| br label %for.cond5 |
| |
| for.cond5: ; preds = %for.inc, %for.body3 |
| %k.0 = phi i32 [ 0, %for.body3 ], [ %inc, %for.inc ] |
| %exitcond = icmp ne i32 %k.0, 100 |
| br i1 %exitcond, label %for.body7, label %for.end |
| |
| for.body7: ; preds = %for.cond5 |
| br label %for.inc |
| |
| for.inc: ; preds = %for.body7 |
| %inc = add nsw i32 %k.0, 1 |
| br label %for.cond5 |
| |
| for.end: ; preds = %for.cond5 |
| br label %for.inc8 |
| |
| for.inc8: ; preds = %for.end |
| %inc9 = add nsw i32 %j.0, 1 |
| br label %for.cond1 |
| |
| for.end10: ; preds = %for.cond1 |
| br label %for.inc11 |
| |
| for.inc11: ; preds = %for.end10 |
| %inc12 = add nsw i32 %i.0, 1 |
| br label %for.cond |
| |
| for.end13: ; preds = %for.cond |
| ret void |
| } |