derek.holloway
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59 lines
2.0 KiB
LLVM
59 lines
2.0 KiB
LLVM
; RUN: opt %loadNPMPolly -pass-remarks-analysis=polly-scops '-passes=polly-custom<scops>' -polly-print-scops -disable-output < %s 2>&1 | FileCheck %s
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; RUN: opt %loadNPMPolly '-passes=polly-custom<scops>' -polly-print-scops -disable-output < %s 2>&1 | FileCheck %s --check-prefix=SCOP
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;
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; CHECK: remark: <unknown>:0:0: SCoP begins here.
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; CHECK-NEXT: remark: <unknown>:0:0: Use user assumption: { : }
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; CHECK-NEXT: remark: <unknown>:0:0: SCoP ends here.
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; SCOP: Context:
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; SCOP-NEXT: [N, M] -> { : -2147483648 <= N <= 2147483647 and -2147483648 <= M <= 2147483647 }
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; SCOP: Assumed Context:
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; SCOP-NEXT: [N, M] -> { : }
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; SCOP: Invalid Context:
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; SCOP-NEXT: [N, M] -> { : false }
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;
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;
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; This test checks that assumptions over parameters not used in the Scop are
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; not modeled. There is no benefit in knowing about parameters that are
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; unused in the scop, and adding them will increase the complexity of our
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; model.
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;
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; int f(int *A, int N, int M) {
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; __builtin_assume(M > 0);
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; for (int i = 0; i < N; i++)
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; A[i]++;
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; return M;
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; }
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;
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define i32 @f(ptr %A, i32 %N, i32 %M) {
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entry:
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%cmp = icmp sgt i32 %M, 0
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call void @llvm.assume(i1 %cmp)
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%tmp = sext i32 %N to i64
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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%cmp1 = icmp slt i64 %indvars.iv, %tmp
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br i1 %cmp1, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%arrayidx = getelementptr inbounds i32, ptr %A, i64 %indvars.iv
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%tmp1 = load i32, ptr %arrayidx, align 4
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%inc = add nsw i32 %tmp1, 1
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store i32 %inc, ptr %arrayidx, align 4
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br label %for.inc
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for.inc: ; preds = %for.body
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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br label %for.cond
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for.end: ; preds = %for.cond
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ret i32 %M
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}
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declare void @llvm.assume(i1) #1
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