; RUN: opt %loadPolly -polly-codegen -polly-allow-nonaffine-loops -polly-allow-nonaffine -debug-only=polly-dependence < %s 2>&1 | FileCheck %s ; REQUIRES: asserts ; CHECK: MayWriteAccess := [Reduction Type: NONE] [Scalar: 0] ; CHECK-NEXT: { Stmt_for_body__TO__for_inc11[i0] -> MemRef_A[o0] : 0 <= o0 <= 699 }; ; CHECK-NEXT: MayWriteAccess := [Reduction Type: NONE] [Scalar: 0] ; CHECK-NEXT: { Stmt_for_body__TO__for_inc11[i0] -> MemRef_B[700] }; ; The if condition C[i] is a non-affine condition, which make the nested loop boxed. The memory access for A should be a range A[0...699]. The memory access for B should be simplified to B[700]. ; ; int A[1000], B[1000], C[1000]; ; ; void foo(int n, int m, int N) { ; for (int i = 0; i < 500; i+=1) { /* affine loop */ ; C[i] += i; ; if (C[i]) { /* non-affine subregion */ ; int j; ; for (j = 0; j < 700; j+=1) { /* boxed loop */ ; A[j] = 1; ; } ; B[j] = 2; ; } ; } ; } target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128" @C = common global [1000 x i32] zeroinitializer, align 4 @A = common global [1000 x i32] zeroinitializer, align 4 @B = common global [1000 x i32] zeroinitializer, align 4 ; Function Attrs: norecurse nounwind define void @foo(i32 %n, i32 %m, i32 %N) #0 { entry: br label %entry.split entry.split: ; preds = %entry br label %for.body for.cond.cleanup: ; preds = %for.inc11 ret void for.body: ; preds = %for.inc11, %entry.split %indvars.iv25 = phi i64 [ 0, %entry.split ], [ %indvars.iv.next26, %for.inc11 ] %arrayidx = getelementptr inbounds [1000 x i32], [1000 x i32]* @C, i64 0, i64 %indvars.iv25 %0 = load i32, i32* %arrayidx, align 4 %1 = trunc i64 %indvars.iv25 to i32 %add = add nsw i32 %0, %1 store i32 %add, i32* %arrayidx, align 4 %tobool = icmp eq i32 %add, 0 br i1 %tobool, label %for.inc11, label %for.body5.preheader for.body5.preheader: ; preds = %for.body br label %for.body5 for.body5: ; preds = %for.body5.preheader, %for.body5 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body5 ], [ 0, %for.body5.preheader ] %arrayidx7 = getelementptr inbounds [1000 x i32], [1000 x i32]* @A, i64 0, i64 %indvars.iv store i32 1, i32* %arrayidx7, align 4 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 %exitcond = icmp eq i64 %indvars.iv, 699 br i1 %exitcond, label %for.end, label %for.body5 for.end: ; preds = %for.body5 store i32 2, i32* getelementptr inbounds ([1000 x i32], [1000 x i32]* @B, i64 0, i64 700), align 4 br label %for.inc11 for.inc11: ; preds = %for.body, %for.end %indvars.iv.next26 = add nuw nsw i64 %indvars.iv25, 1 %exitcond27 = icmp eq i64 %indvars.iv25, 499 br i1 %exitcond27, label %for.cond.cleanup, label %for.body }