; RUN: opt %loadPolly -polly-detect-unprofitable -polly-dependences -analyze < %s | FileCheck %s ; ; CHECK: RAW dependences: ; CHECK-DAG: Stmt_S2[i0, i1] -> Stmt_S1[i1] : i0 >= 0 and i1 >= 1 + i0 and i1 <= 98 ; CHECK-DAG: Stmt_S1[i0] -> Stmt_S2[i0, i0] : i0 <= 98 and i0 >= 0 ; CHECK-DAG: Stmt_S2[i0, i0] -> Stmt_S3[i0] : i0 <= 98 and i0 >= 0 ; CHECK-DAG: Stmt_S3[i0] -> Stmt_S2[o0, i0] : i0 >= 0 and o0 >= 1 + i0 and o0 <= 98 ; CHECK: WAR dependences: ; CHECK-DAG: { } ; CHECK: WAW dependences: ; CHECK-DAG: Stmt_S2[i0, i1] -> Stmt_S1[i1] : i0 >= 0 and i1 >= 1 + i0 and i1 <= 98 ; CHECK-DAG: Stmt_S1[i0] -> Stmt_S2[i0, i0] : i0 <= 98 and i0 >= 0 ; CHECK-DAG: Stmt_S2[i0, i0] -> Stmt_S3[i0] : i0 <= 98 and i0 >= 0 ; CHECK-DAG: Stmt_S3[i0] -> Stmt_S2[o0, i0] : i0 >= 0 and o0 >= 1 + i0 and o0 <= 98 ; CHECK: Reduction dependences: ; CHECK-DAG: { Stmt_S2[i0, i1] -> Stmt_S2[1 + i0, i1] : (i0 >= 0 and i1 >= 2 + i0 and i1 <= 99) or (i0 <= 97 and i1 >= 0 and i1 <= -1 + 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 }