forked from OSchip/llvm-project
59 lines
2.1 KiB
LLVM
59 lines
2.1 KiB
LLVM
; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
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;
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; Test comes from a bug (15771) or better a feature request. It was not allowed
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; in Polly in the old domain generation as ScalarEvolution cannot figure out the
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; loop bounds. However, the new domain generation will detect the SCoP.
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; CHECK: Context:
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; CHECK-NEXT: [n] -> { : -2147483648 <= n <= 2147483647 }
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;
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; CHECK: p0: %n
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;
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; CHECK: Statements {
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; CHECK-NEXT: Stmt_for_next
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; CHECK-NEXT: Domain :=
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; CHECK-NEXT: [n] -> { Stmt_for_next[i0] : i0 >= 0 and 2i0 <= -3 + n };
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; CHECK-NEXT: Schedule :=
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; CHECK-NEXT: [n] -> { Stmt_for_next[i0] -> [i0] };
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; CHECK-NEXT: ReadAccess := [Reduction Type: +] [Scalar: 0]
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; CHECK-NEXT: [n] -> { Stmt_for_next[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: +] [Scalar: 0]
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; CHECK-NEXT: [n] -> { Stmt_for_next[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: }
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@A = common global [100 x i32] zeroinitializer, align 16
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define void @foo(i32 %n) #0 {
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entry:
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br label %entry.split
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entry.split: ; preds = %entry
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%cmp2 = icmp sgt i32 %n, 0
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br i1 %cmp2, label %for.body.lr.ph, label %for.end
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for.body.lr.ph: ; preds = %entry.split
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br label %for.body
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for.body: ; preds = %for.body.lr.ph, %for.body
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%indvar = phi i64 [ 0, %for.body.lr.ph ], [ %indvar.next, %for.next ]
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%arrayidx = getelementptr [100 x i32], [100 x i32]* @A, i64 0, i64 %indvar
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%0 = mul i64 %indvar, 2
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%1 = add i64 %0, 2
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%add1 = trunc i64 %1 to i32
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%cmp = icmp slt i32 %add1, %n
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%indvar.next = add i64 %indvar, 1
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br i1 %cmp, label %for.next, label %for.cond.for.end_crit_edge
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for.next:
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%2 = load i32, i32* %arrayidx, align 4
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%add = add nsw i32 %2, 1
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store i32 %add, i32* %arrayidx, align 4
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br label %for.body
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for.cond.for.end_crit_edge: ; preds = %for.body
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br label %for.end
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for.end: ; preds = %for.cond.for.end_crit_edge, %entry.split
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ret void
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}
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