1 ; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s --check-prefix=AFFINE
2 ; RUN: opt %loadPolly -polly-scops -polly-allow-nonaffine -analyze < %s | FileCheck %s --check-prefix=NONAFFINE
4 ; The SCoP contains a loop with multiple exit blocks (BBs after leaving
5 ; the loop). The current implementation of deriving their domain derives
6 ; only a common domain for all of the exit blocks. We disabled loops with
7 ; multiple exit blocks until this is fixed.
10 ; The loop for.body => for.inc has an unpredictable iteration count could due to
11 ; the undef start value that it is compared to. Therefore the array element
12 ; %arrayidx101 that depends on that exit value cannot be affine.
13 ; Derived from test-suite/MultiSource/Benchmarks/BitBench/uuencode/uuencode.c
15 define void @encode_line(i8* nocapture readonly %input, i32 %octets, i64 %p, i32 %n) {
20 %j = phi i32 [0, %entry], [%j.inc, %for.end]
21 %j.cmp = icmp slt i32 %j, %n
22 br i1 %j.cmp, label %for.body, label %exit
27 %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ %p, %outer.for ]
28 %octets.addr.02 = phi i32 [ undef, %for.inc ], [ %octets, %outer.for ]
29 br i1 false, label %for.inc, label %if.else
32 %cond = icmp eq i32 %octets.addr.02, 2
33 br i1 %cond, label %if.then84, label %for.end
36 %0 = add nsw i64 %indvars.iv, 1
37 %arrayidx101 = getelementptr inbounds i8, i8* %input, i64 %0
38 store i8 42, i8* %arrayidx101, align 1
42 %cmp = icmp sgt i32 %octets.addr.02, 3
43 %indvars.iv.next = add nsw i64 %indvars.iv, 3
44 br i1 %cmp, label %for.body, label %for.end
49 %j.inc = add nuw nsw i32 %j, 1
60 ; AFFINE: Region: %if.else---%for.end
62 ; AFFINE: Statements {
63 ; AFFINE-NEXT: Stmt_if_then84
64 ; AFFINE-NEXT: Domain :=
65 ; AFFINE-NEXT: [octets, p_1, p] -> { Stmt_if_then84[] : octets = 2 };
66 ; AFFINE-NEXT: Schedule :=
67 ; AFFINE-NEXT: [octets, p_1, p] -> { Stmt_if_then84[] -> [] };
68 ; AFFINE-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
69 ; AFFINE-NEXT: [octets, p_1, p] -> { Stmt_if_then84[] -> MemRef_input[1 + p] };
73 ; NONAFFINE: Region: %outer.for---%return
75 ; NONAFFINE: Statements {
76 ; NONAFFINE-NEXT: Stmt_for_body
77 ; NONAFFINE-NEXT: Domain :=
78 ; NONAFFINE-NEXT: [n, octets] -> { Stmt_for_body[i0, 0] : 0 <= i0 < n };
79 ; NONAFFINE-NEXT: Schedule :=
80 ; NONAFFINE-NEXT: [n, octets] -> { Stmt_for_body[i0, i1] -> [i0, 0, 0] };
81 ; NONAFFINE-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
82 ; NONAFFINE-NEXT: [n, octets] -> { Stmt_for_body[i0, i1] -> MemRef_indvars_iv[] };
83 ; NONAFFINE-NEXT: Stmt_if_then84
84 ; NONAFFINE-NEXT: Domain :=
85 ; NONAFFINE-NEXT: [n, octets] -> { Stmt_if_then84[i0] : octets = 2 and 0 <= i0 < n };
86 ; NONAFFINE-NEXT: Schedule :=
87 ; NONAFFINE-NEXT: [n, octets] -> { Stmt_if_then84[i0] -> [i0, 1, 0] };
88 ; NONAFFINE-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
89 ; NONAFFINE-NEXT: [n, octets] -> { Stmt_if_then84[i0] -> MemRef_indvars_iv[] };
90 ; NONAFFINE-NEXT: MayWriteAccess := [Reduction Type: NONE] [Scalar: 0]
91 ; NONAFFINE-NEXT: [n, octets] -> { Stmt_if_then84[i0] -> MemRef_input[o0] };