forked from OSchip/llvm-project
52 lines
1.4 KiB
LLVM
52 lines
1.4 KiB
LLVM
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; RUN: opt %loadPolly -basicaa -polly-analyze-ir -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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; A[i] = init + 2;
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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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target triple = "x86_64-unknown-linux-gnu"
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define void @f(i64* noalias %A, i64 %N, i64* noalias %init_ptr) nounwind {
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entry:
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br label %for.i
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for.i:
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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:
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; CHECK: BB: entry.next
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%init = load i64* %init_ptr
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; CHECK: Read init_ptr[0]
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; CHECK: Write init.s2a[0]
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br label %for.j
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for.j:
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%indvar.j = phi i64 [ 0, %entry.next ], [ %indvar.j.next, %for.j ]
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; CHECK: BB: for.j
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; CHECK: Read init.s2a[0]
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; CHECK: Write A[{0,+,8}<%for.j>]
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%init_plus_two = add i64 %init, 2
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%scevgep = getelementptr i64* %A, i64 %indvar.j
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store i64 %init_plus_two, 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:
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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:
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ret void
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}
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