forked from OSchip/llvm-project
61 lines
2.2 KiB
LLVM
61 lines
2.2 KiB
LLVM
; RUN: opt %loadPolly -polly-detect-unprofitable -basicaa -polly-scops -analyze < %s | FileCheck %s
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; void f(long A[], int N, int *init_ptr) {
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; long i, j;
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;
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; for (i = 0; i < N; ++i) {
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; init = *init_ptr;
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; for (i = 0; i < N; ++i) {
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; init2 = *init_ptr;
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; A[i] = init + init2;
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; }
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; }
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; }
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
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; CHECK: Invariant Accesses: {
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; CHECK: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK: MemRef_init_ptr[0]
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; CHECK: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK: MemRef_init_ptr[0]
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; CHECK: }
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define void @f(i64* noalias %A, i64 %N, i64* noalias %init_ptr) #0 {
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entry:
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br label %for.i
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for.i: ; preds = %for.i.end, %entry
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%indvar.i = phi i64 [ 0, %entry ], [ %indvar.i.next, %for.i.end ]
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%indvar.i.next = add nsw i64 %indvar.i, 1
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br label %entry.next
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entry.next: ; preds = %for.i
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%init = load i64, i64* %init_ptr
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; CHECK-NOT: Stmt_entry_next
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br label %for.j
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for.j: ; preds = %for.j, %entry.next
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%indvar.j = phi i64 [ 0, %entry.next ], [ %indvar.j.next, %for.j ]
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%init_2 = load i64, i64* %init_ptr
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%init_sum = add i64 %init, %init_2
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; CHECK: Stmt_for_j
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; CHECK: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: [N] -> { Stmt_for_j[i0, i1] -> MemRef_init[] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [N] -> { Stmt_for_j[i0, i1] -> MemRef_A[i1] };
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%scevgep = getelementptr i64, i64* %A, i64 %indvar.j
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store i64 %init_sum, i64* %scevgep
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%indvar.j.next = add nsw i64 %indvar.j, 1
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%exitcond.j = icmp eq i64 %indvar.j.next, %N
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br i1 %exitcond.j, label %for.i.end, label %for.j
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for.i.end: ; preds = %for.j
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%exitcond.i = icmp eq i64 %indvar.i.next, %N
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br i1 %exitcond.i, label %return, label %for.i
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return: ; preds = %for.i.end
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ret void
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}
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attributes #0 = { nounwind }
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