1 ; RUN: opt %loadPolly -polly-scops -polly-invariant-load-hoisting=true -analyze < %s | FileCheck %s
3 ; CHECK: Invariant Accesses: {
4 ; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
5 ; CHECK-NEXT: [LB, UB] -> { Stmt_for_body[i0] -> MemRef_LBptr[0] };
6 ; CHECK-NEXT: Execution Context: [LB, UB] -> { : }
7 ; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
8 ; CHECK-NEXT: [LB, UB] -> { Stmt_do_cond[i0, i1] -> MemRef_UBptr[0] };
9 ; CHECK-NEXT: Execution Context: [LB, UB] -> { : }
10 ; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
11 ; CHECK-NEXT: [LB, UB] -> { Stmt_if_then[i0, i1] -> MemRef_V[0] };
12 ; CHECK-NEXT: Execution Context: [LB, UB] -> { : LB >= 6 or (UB > LB and UB >= 6) }
13 ; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
14 ; CHECK-NEXT: [LB, UB] -> { Stmt_if_else[i0, i1] -> MemRef_U[0] };
15 ; CHECK-NEXT: Execution Context: [LB, UB] -> { : LB <= 5 }
18 ; void f(int *restrict A, int *restrict V, int *restrict U, int *restrict UB,
20 ; for (int i = 0; i < 100; i++) {
21 ; int j = /* invariant load */ *LB;
24 ; A[i] += /* invariant load */ *V;
26 ; A[i] += /* invariant load */ *U;
27 ; } while (j++ < /* invariant load */ *UB);
31 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
33 define void @f(i32* noalias %A, i32* noalias %V, i32* noalias %U, i32* noalias %UBptr, i32* noalias %LBptr) {
37 for.cond: ; preds = %for.inc, %entry
38 %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
39 %exitcond = icmp ne i64 %indvars.iv, 100
40 br i1 %exitcond, label %for.body, label %for.end
42 for.body: ; preds = %for.cond
43 %LB = load i32, i32* %LBptr, align 4
46 do.body: ; preds = %do.cond, %for.body
47 %j.0 = phi i32 [ %LB, %for.body ], [ %inc, %do.cond ]
48 %cmp1 = icmp sgt i32 %j.0, 5
49 br i1 %cmp1, label %if.then, label %if.else
51 if.then: ; preds = %do.body
52 %tmp1 = load i32, i32* %V, align 4
53 %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
54 %tmp2 = load i32, i32* %arrayidx, align 4
55 %add = add nsw i32 %tmp2, %tmp1
56 store i32 %add, i32* %arrayidx, align 4
59 if.else: ; preds = %do.body
60 %tmp3 = load i32, i32* %U, align 4
61 %arrayidx3 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
62 %tmp4 = load i32, i32* %arrayidx3, align 4
63 %add4 = add nsw i32 %tmp4, %tmp3
64 store i32 %add4, i32* %arrayidx3, align 4
67 if.end: ; preds = %if.else, %if.then
70 do.cond: ; preds = %if.end
71 %inc = add nsw i32 %j.0, 1
72 %UB = load i32, i32* %UBptr, align 4
73 %cmp5 = icmp slt i32 %j.0, %UB
74 br i1 %cmp5, label %do.body, label %do.end
76 do.end: ; preds = %do.cond
79 for.inc: ; preds = %do.end
80 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
83 for.end: ; preds = %for.cond