forked from OSchip/llvm-project
56 lines
2.0 KiB
LLVM
56 lines
2.0 KiB
LLVM
; RUN: opt %loadPolly -basicaa -polly-stmt-granularity=bb -polly-scops -analyze -polly-allow-modref-calls \
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; RUN: < %s | FileCheck %s
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; RUN: opt %loadPolly -basicaa -polly-stmt-granularity=bb -polly-codegen -polly-allow-modref-calls \
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; RUN: -disable-output < %s
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;
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; Verify that we model the may-write access of the prefetch intrinsic
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; correctly, thus that A is accessed by it but B is not.
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;
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; CHECK: Stmt_for_body
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; CHECK-NEXT: Domain :=
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; CHECK-NEXT: { Stmt_for_body[i0] : 0 <= i0 <= 1023 };
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; CHECK-NEXT: Schedule :=
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; CHECK-NEXT: { Stmt_for_body[i0] -> [i0] };
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; CHECK-NEXT: MayWriteAccess := [Reduction Type: NONE]
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; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_A[o0] };
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE]
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; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_B[i0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE]
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; CHECK-NEXT: { Stmt_for_body[i0] -> MemRef_A[i0] };
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;
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; void jd(int *restirct A, int *restrict B) {
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; for (int i = 0; i < 1024; i++) {
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; @llvm.prefetch(A);
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; A[i] = B[i];
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; }
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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 void @jd(i32* noalias %A, i32* noalias %B) {
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entry:
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br label %for.body
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for.body: ; preds = %entry, %for.inc
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%i = phi i64 [ 0, %entry ], [ %i.next, %for.inc ]
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %i
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%arrayidx1 = getelementptr inbounds i32, i32* %B, i64 %i
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%bc = bitcast i32* %arrayidx to i8*
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call void @f(i8* %bc, i32 1, i32 1, i32 1)
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%tmp = load i32, i32* %arrayidx1
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store i32 %tmp, i32* %arrayidx, align 4
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br label %for.inc
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for.inc: ; preds = %for.body
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%i.next = add nuw nsw i64 %i, 1
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%exitcond = icmp ne i64 %i.next, 1024
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br i1 %exitcond, label %for.body, label %for.end
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for.end: ; preds = %for.inc
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ret void
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}
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declare void @f(i8*, i32, i32, i32) #0
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attributes #0 = { argmemonly nounwind }
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