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; RUN: opt %loadPolly -polly-print-scops -disable-output < %s | FileCheck %s
; RUN: opt %loadPolly -polly-print-ast -disable-output < %s | FileCheck %s --check-prefix=AST
;
; The SCoP contains a loop with multiple exit blocks (BBs after leaving
; the loop). The current implementation of deriving their domain derives
; only a common domain for all of the exit blocks. We disabled loops with
; multiple exit blocks until this is fixed.
; XFAIL: *
;
; void f(int *A, int *B, int N) {
; for (int i = 0; i < N; i++) {
; A[i]++;
; switch (N) {
; case 0:
; B[i]++;
; break;
; default:
; return;
; }
; }
; }
; CHECK: Statements {
; CHECK-NEXT: Stmt_for_body
; CHECK-NEXT: Domain :=
; CHECK-NEXT: [N] -> { Stmt_for_body[0] : N > 0 };
; CHECK-NEXT: Schedule :=
; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> [0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: +] [Scalar: 0]
; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> MemRef_A[0] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: +] [Scalar: 0]
; CHECK-NEXT: [N] -> { Stmt_for_body[i0] -> MemRef_A[0] };
; CHECK-NEXT: }
; AST: if (1)
;
; AST: if (N >= 1)
; AST-NEXT: Stmt_for_body(0);
;
; AST: else
; AST-NEXT: { /* original code */ }
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(ptr %A, ptr %B, i32 %N) {
entry:
%tmp = sext i32 %N to i64
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
%cmp = icmp slt i64 %indvars.iv, %tmp
br i1 %cmp, label %for.body, label %for.end.loopexit
for.body: ; preds = %for.cond
%arrayidx = getelementptr inbounds i32, ptr %A, i64 %indvars.iv
%tmp1 = load i32, ptr %arrayidx, align 4
%inc = add nsw i32 %tmp1, 1
store i32 %inc, ptr %arrayidx, align 4
switch i32 %N, label %sw.default [
i32 0, label %sw.bb
]
sw.bb: ; preds = %for.body
%arrayidx2 = getelementptr inbounds i32, ptr %B, i64 %indvars.iv
%tmp2 = load i32, ptr %arrayidx2, align 4
%inc3 = add nsw i32 %tmp2, 1
store i32 %inc3, ptr %arrayidx2, align 4
br label %sw.epilog
sw.default: ; preds = %for.body
br label %for.end
sw.epilog: ; preds = %sw.bb
br label %for.inc
for.inc: ; preds = %sw.epilog
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
br label %for.cond
for.end.loopexit: ; preds = %for.cond
br label %for.end
for.end: ; preds = %for.end.loopexit, %sw.default
ret void
}
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