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; RUN: opt %loadPolly -polly-import-jscop -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_A)
; CHECK-NEXT: for (int c0 = 0; c0 <= 2; c0 += 1) {
; CHECK-NEXT: if (c0 == 1) {
; CHECK-NEXT: #pragma simd
; CHECK-NEXT: for (int c1 = 0; c1 < 2 * n; c1 += 1)
; CHECK-NEXT: Stmt_S1(c1);
; CHECK-NEXT: } else
; CHECK-NEXT: #pragma simd reduction (+ : MemRef_A)
; CHECK-NEXT: for (int c1 = c0 / 2; c1 < 2 * n; c1 += 2)
; CHECK-NEXT: Stmt_S0(c1);
; CHECK-NEXT: }
;
; PINFO: for.cond2: Loop is parallel.
; PINFO-NEXT: for.cond: Loop is not parallel.
;
; void rms(int *A, long n) {
; for (long i = 0; i < 2 * n; i++)
; S0: A[0] += i;
; for (long i = 0; i < 2 * n; i++)
; S1: A[i + 1] = 1;
; }
;
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
define void @rms(ptr %A, i32 %n) {
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
%mul = shl nsw i32 %n, 1
%cmp = icmp slt i32 %i.0, %mul
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
br label %S0
S0: ; preds = %for.body
%tmp = load i32, ptr %A, align 4
%add = add nsw i32 %tmp, %i.0
store i32 %add, ptr %A, align 4
br label %for.inc
for.inc: ; preds = %S0
%inc = add nsw i32 %i.0, 1
br label %for.cond
for.end: ; preds = %for.cond
br label %for.cond2
for.cond2: ; preds = %for.inc8, %for.end
%i1.0 = phi i32 [ 0, %for.end ], [ %inc9, %for.inc8 ]
%mul3 = shl nsw i32 %n, 1
%cmp4 = icmp slt i32 %i1.0, %mul3
br i1 %cmp4, label %for.body5, label %for.end10
for.body5: ; preds = %for.cond2
br label %S1
S1: ; preds = %for.body5
%add6 = add nsw i32 %i1.0, 1
%arrayidx7 = getelementptr inbounds i32, ptr %A, i32 %add6
store i32 1, ptr %arrayidx7, align 4
br label %for.inc8
for.inc8: ; preds = %S1
%inc9 = add nsw i32 %i1.0, 1
br label %for.cond2
for.end10: ; preds = %for.cond2
ret void
}
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