; RUN: opt %loadNPMPolly '-passes=print<polly-function-scops>' -disable-output < %s 2>&1 | FileCheck %s
; RUN: opt %loadNPMPolly '-passes=print<polly-function-scops>' -disable-output < %s 2>&1 | FileCheck %s
;
; Verify the scalar x defined in a non-affine subregion is written as it
; escapes the region. In this test the two conditionals inside the region
; are expressed as one PHI nodes with three incoming values.
;
; void f(int *A, int b) {
; for (int i = 0; i < 1024; i++) {
; int x = 0;
; if (A[i]) {
; if (b > i)
; x = 0;
; else if (b < 2 * i)
; x = i;
; else
; x = b;
; }
; A[i] = x;
; }
; }
; CHECK-LABEL: Region: %bb2---%bb21
;
; CHECK: Statements {
; CHECK-NEXT: Stmt_bb3__TO__bb18
; CHECK-NEXT: Domain :=
; CHECK-NEXT: { Stmt_bb3__TO__bb18[i0] : 0 <= i0 <= 1023 };
; CHECK-NEXT: Schedule :=
; CHECK-NEXT: { Stmt_bb3__TO__bb18[i0] -> [i0, 0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: { Stmt_bb3__TO__bb18[i0] -> MemRef_A[i0] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT: { Stmt_bb3__TO__bb18[i0] -> MemRef_x_2__phi[] };
; CHECK-NEXT: Stmt_bb18
; CHECK-NEXT: Domain :=
; CHECK-NEXT: { Stmt_bb18[i0] : 0 <= i0 <= 1023 };
; CHECK-NEXT: Schedule :=
; CHECK-NEXT: { Stmt_bb18[i0] -> [i0, 1] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT: { Stmt_bb18[i0] -> MemRef_x_2__phi[] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: { Stmt_bb18[i0] -> MemRef_A[i0] };
; CHECK-NEXT: }
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(ptr %A, i32 %b) {
bb:
%tmp = sext i32 %b to i64
%tmp1 = sext i32 %b to i64
br label %bb2
bb2: ; preds = %bb20, %bb
%indvars.iv = phi i64 [ %indvars.iv.next, %bb20 ], [ 0, %bb ]
%exitcond = icmp ne i64 %indvars.iv, 1024
br i1 %exitcond, label %bb3, label %bb21
bb3: ; preds = %bb2
%tmp4 = getelementptr inbounds i32, ptr %A, i64 %indvars.iv
%tmp5 = load i32, ptr %tmp4, align 4
%tmp6 = icmp eq i32 %tmp5, 0
br i1 %tmp6, label %bb18, label %bb7
bb7: ; preds = %bb3
%tmp8 = icmp slt i64 %indvars.iv, %tmp
br i1 %tmp8, label %bb9, label %bb10
bb9: ; preds = %bb7
br label %bb18
bb10: ; preds = %bb7
%tmp11 = shl nsw i64 %indvars.iv, 1
%tmp12 = icmp sgt i64 %tmp11, %tmp1
br i1 %tmp12, label %bb13, label %bb15
bb13: ; preds = %bb10
%tmp14 = trunc i64 %indvars.iv to i32
br label %bb18
bb15: ; preds = %bb10
br label %bb18
bb18: ; preds = %bb3, %bb13, %bb15, %bb9
%x.2 = phi i32 [ 0, %bb9 ], [ %tmp14, %bb13 ], [ %b, %bb15 ], [ 0, %bb3 ]
%tmp19 = getelementptr inbounds i32, ptr %A, i64 %indvars.iv
store i32 %x.2, ptr %tmp19, align 4
br label %bb20
bb20: ; preds = %bb18
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
br label %bb2
bb21: ; preds = %bb2
ret void
}
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