; RUN: opt %loadPolly -polly-dependences -analyze < %s | FileCheck %s ; ; CHECK: RAW dependences: ; CHECK-NEXT: { Stmt_S2[i0, i1] -> Stmt_S3[o0] : i1 <= 1 - i0 and -i1 < o0 <= 1 and o0 <= 1 + i0 - i1; Stmt_S3[i0] -> Stmt_S2[o0, 1 - i0] : 0 <= i0 <= 1 and i0 < o0 <= 98; Stmt_S1[i0] -> Stmt_S3[2 + i0] : 0 <= i0 <= 96 } ; CHECK-NEXT: WAR dependences: ; CHECK-NEXT: { Stmt_S2[i0, i1] -> Stmt_S3[o0] : i1 <= 1 - i0 and -i1 < o0 <= 1 and o0 <= 1 + i0 - i1; Stmt_S3[i0] -> Stmt_S2[o0, 1 - i0] : 0 <= i0 <= 1 and i0 < o0 <= 98; Stmt_S1[i0] -> Stmt_S3[2 + i0] : 0 <= i0 <= 96 } ; CHECK-NEXT: WAW dependences: ; CHECK-NEXT: { Stmt_S2[i0, i1] -> Stmt_S3[o0] : i1 <= 1 - i0 and -i1 < o0 <= 1 and o0 <= 1 + i0 - i1; Stmt_S3[i0] -> Stmt_S2[o0, 1 - i0] : 0 <= i0 <= 1 and i0 < o0 <= 98; Stmt_S1[i0] -> Stmt_S3[2 + i0] : 0 <= i0 <= 96 } ; CHECK-NEXT: Reduction dependences: ; CHECK-NEXT: { Stmt_S2[i0, i1] -> Stmt_S2[1 + i0, i1] : 0 <= i0 <= 97 and i1 >= 0 and 2 - i0 <= i1 <= 98 - i0; Stmt_S2[0, 0] -> Stmt_S2[1, 0] } ; ; void f(int *sum) { ; int i, j; ; for (i = 0; i < 99; i++) { ; S1: sum[i + 1] += 42; ; for (j = i; j < 100; j++) ; S2: sum[i - j] += i * j; ; S3: sum[i - 1] += 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.inc10, %entry %i.0 = phi i32 [ 0, %entry ], [ %inc11, %for.inc10 ] %exitcond1 = icmp ne i32 %i.0, 99 br i1 %exitcond1, label %for.body, label %for.end12 for.body: ; preds = %for.cond br label %S1 S1: ; preds = %for.body %add = add nsw i32 %i.0, 1 %arrayidx = getelementptr inbounds i32, i32* %sum, i32 %add %tmp = load i32, i32* %arrayidx, align 4 %add1 = add nsw i32 %tmp, 42 store i32 %add1, i32* %arrayidx, align 4 br label %for.cond2 for.cond2: ; preds = %for.inc, %S1 %j.0 = phi i32 [ %i.0, %S1 ], [ %inc, %for.inc ] %exitcond = icmp ne i32 %j.0, 100 br i1 %exitcond, label %for.body4, label %for.end for.body4: ; preds = %for.cond2 br label %S2 S2: ; preds = %for.body4 %mul = mul nsw i32 %i.0, %j.0 %sub = sub nsw i32 %i.0, %j.0 %arrayidx5 = getelementptr inbounds i32, i32* %sum, i32 %sub %tmp2 = load i32, i32* %arrayidx5, align 4 %add6 = add nsw i32 %tmp2, %mul store i32 %add6, i32* %arrayidx5, align 4 br label %for.inc for.inc: ; preds = %S2 %inc = add nsw i32 %j.0, 1 br label %for.cond2 for.end: ; preds = %for.cond2 br label %S3 S3: ; preds = %for.end %sub7 = add nsw i32 %i.0, -1 %arrayidx8 = getelementptr inbounds i32, i32* %sum, i32 %sub7 %tmp3 = load i32, i32* %arrayidx8, align 4 %add9 = add nsw i32 %tmp3, 7 store i32 %add9, i32* %arrayidx8, align 4 br label %for.inc10 for.inc10: ; preds = %S3 %inc11 = add nsw i32 %i.0, 1 br label %for.cond for.end12: ; preds = %for.cond ret void }