derek.holloway
7502bf64a4
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46 lines
1.9 KiB
LLVM
46 lines
1.9 KiB
LLVM
; RUN: opt %loadNPMPolly '-passes=polly-custom<scops>' -polly-print-scops -disable-output < %s 2>&1 | FileCheck %s
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; Verify if the following case is not detected as reduction.
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;
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; void f(int *A, int *sum, int i1, int i2) {
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; for (int i = 0; i < 1024; i++)
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; sum[i2] = sum[i1] + A[i];
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; }
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;
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; Verify that we don't detect the reduction on sum
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;
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; CHECK: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_sum[i1] };
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; CHECK-NEXT:ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_A[i0] };
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; CHECK-NEXT:MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_sum[i2] };
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;
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target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
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; Function Attrs: nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
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define dso_local void @f(ptr nocapture noundef readonly %A, ptr nocapture noundef %sum, i32 noundef %i1, i32 noundef %i2) local_unnamed_addr #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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%idxprom = sext i32 %i1 to i64
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%arrayidx = getelementptr inbounds i32, ptr %sum, i64 %idxprom
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%idxprom3 = sext i32 %i2 to i64
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%arrayidx4 = getelementptr inbounds i32, ptr %sum, i64 %idxprom3
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br label %for.body
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for.cond.cleanup: ; preds = %for.body
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ret void
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for.body: ; preds = %entry.split, %for.body
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%indvars.iv = phi i64 [ 0, %entry.split ], [ %indvars.iv.next, %for.body ]
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%0 = load i32, ptr %arrayidx, align 4
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%arrayidx2 = getelementptr inbounds i32, ptr %A, i64 %indvars.iv
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%1 = load i32, ptr %arrayidx2, align 4
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%add = add nsw i32 %1, %0
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store i32 %add, ptr %arrayidx4, align 4
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond.not = icmp eq i64 %indvars.iv.next, 1024
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br i1 %exitcond.not, label %for.cond.cleanup, label %for.body
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}
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