1 ; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
3 ; Verify the scalar x defined in a non-affine subregion is written as it
4 ; escapes the region. In this test the two conditionals inside the region
5 ; are expressed as two PHI nodes with two incoming values each.
7 ; void f(int *A, int b) {
8 ; for (int i = 0; i < 1024; i++) {
22 ; CHECK-LABEL: Region: %bb2---%bb21
25 ; CHECK-NEXT: Stmt_bb3__TO__bb18
26 ; CHECK-NEXT: Domain :=
27 ; CHECK-NEXT: { Stmt_bb3__TO__bb18[i0] : 0 <= i0 <= 1023 };
28 ; CHECK-NEXT: Schedule :=
29 ; CHECK-NEXT: { Stmt_bb3__TO__bb18[i0] -> [i0, 0] };
30 ; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
31 ; CHECK-NEXT: { Stmt_bb3__TO__bb18[i0] -> MemRef_A[i0] };
32 ; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
33 ; CHECK-NEXT: { Stmt_bb3__TO__bb18[i0] -> MemRef_x_2__phi[] };
34 ; CHECK-NEXT: Stmt_bb18
35 ; CHECK-NEXT: Domain :=
36 ; CHECK-NEXT: { Stmt_bb18[i0] : 0 <= i0 <= 1023 };
37 ; CHECK-NEXT: Schedule :=
38 ; CHECK-NEXT: { Stmt_bb18[i0] -> [i0, 1] };
39 ; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
40 ; CHECK-NEXT: { Stmt_bb18[i0] -> MemRef_x_2__phi[] };
41 ; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
42 ; CHECK-NEXT: { Stmt_bb18[i0] -> MemRef_A[i0] };
45 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
47 define void @f(i32* %A, i32 %b) {
49 %tmp = sext i32 %b to i64
50 %tmp1 = sext i32 %b to i64
53 bb2: ; preds = %bb20, %bb
54 %indvars.iv = phi i64 [ %indvars.iv.next, %bb20 ], [ 0, %bb ]
55 %exitcond = icmp ne i64 %indvars.iv, 1024
56 br i1 %exitcond, label %bb3, label %bb21
59 %tmp4 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
60 %tmp5 = load i32, i32* %tmp4, align 4
61 %tmp6 = icmp eq i32 %tmp5, 0
62 br i1 %tmp6, label %bb18, label %bb7
65 %tmp8 = icmp slt i64 %indvars.iv, %tmp
66 br i1 %tmp8, label %bb9, label %bb10
72 %tmp11 = shl nsw i64 %indvars.iv, 1
73 %tmp12 = icmp sgt i64 %tmp11, %tmp1
74 br i1 %tmp12, label %bb13, label %bb15
77 %tmp14 = trunc i64 %indvars.iv to i32
83 bb16: ; preds = %bb15, %bb13
84 %x.0 = phi i32 [ %tmp14, %bb13 ], [ %b, %bb15 ]
87 bb17: ; preds = %bb16, %bb9
88 %x.1 = phi i32 [ 0, %bb9 ], [ %x.0, %bb16 ]
91 bb18: ; preds = %bb3, %bb17
92 %x.2 = phi i32 [ %x.1, %bb17 ], [ 0, %bb3 ]
93 %tmp19 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
94 store i32 %x.2, i32* %tmp19, align 4
98 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1