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; RUN: opt %loadPolly -polly-print-ast -polly-ast-detect-parallel -disable-output < %s | FileCheck %s
; RUN: opt %loadPolly -print-polyhedral-info -polly-check-parallel -disable-output < %s | FileCheck %s -check-prefix=PINFO
;
; CHECK: #pragma known-parallel reduction (^ : MemRef_sum)
; void f(int N, int M, int P, int sum[P][M]) {
; PINFO: for.cond: Loop is not parallel.
; for (int i = 0; i < N; i++)
; PINFO-NEXT: for.cond1: Loop is parallel.
; for (int j = 0; j < P; j++)
; CHECK: #pragma simd
; PINFO-NEXT: for.cond4: Loop is parallel.
; for (int k = 0; k < M; k++)
; sum[j][k] ^= j;
; }
;
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
define void @f(i32 %N, i32 %M, i32 %P, i32* %sum) {
entry:
br label %for.cond
for.cond: ; preds = %for.inc11, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc12, %for.inc11 ]
%cmp = icmp slt i32 %i.0, %N
br i1 %cmp, label %for.body, label %for.end13
for.body: ; preds = %for.cond
br label %for.cond1
for.cond1: ; preds = %for.inc8, %for.body
%j.0 = phi i32 [ 0, %for.body ], [ %inc9, %for.inc8 ]
%cmp2 = icmp slt i32 %j.0, %P
br i1 %cmp2, label %for.body3, label %for.end10
for.body3: ; preds = %for.cond1
br label %for.cond4
for.cond4: ; preds = %for.inc, %for.body3
%k.0 = phi i32 [ 0, %for.body3 ], [ %inc, %for.inc ]
%cmp5 = icmp slt i32 %k.0, %M
br i1 %cmp5, label %for.body6, label %for.end
for.body6: ; preds = %for.cond4
%tmp = mul nsw i32 %j.0, %M
%arrayidx.sum = add i32 %tmp, %k.0
%arrayidx7 = getelementptr inbounds i32, i32* %sum, i32 %arrayidx.sum
%tmp1 = load i32, i32* %arrayidx7, align 4
%xor = xor i32 %tmp1, %j.0
store i32 %xor, i32* %arrayidx7, align 4
br label %for.inc
for.inc: ; preds = %for.body6
%inc = add nsw i32 %k.0, 1
br label %for.cond4
for.end: ; preds = %for.cond4
br label %for.inc8
for.inc8: ; preds = %for.end
%inc9 = add nsw i32 %j.0, 1
br label %for.cond1
for.end10: ; preds = %for.cond1
br label %for.inc11
for.inc11: ; preds = %for.end10
%inc12 = add nsw i32 %i.0, 1
br label %for.cond
for.end13: ; preds = %for.cond
ret void
}
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