forked from OSchip/llvm-project
42 lines
929 B
LLVM
42 lines
929 B
LLVM
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; RUN: opt %loadPolly -polly-codegen -S < %s | FileCheck %s
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;
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; Verify that @llvm.memcpy does not get a !alias.scope annotation.
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; @llvm.memcpy takes two pointers, it is ambiguous to which the
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; annotation applies.
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;
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; for (int j = 0; j < n; j += 1) {
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; memcpy(A, B, 8);
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; }
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;
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i32, i1)
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define void @func(i32 %n, i8* noalias nonnull %A, i8* noalias nonnull %B) {
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entry:
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br label %for
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for:
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%j = phi i32 [0, %entry], [%j.inc, %inc]
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%j.cmp = icmp slt i32 %j, %n
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br i1 %j.cmp, label %body, label %exit
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body:
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull %A, i8* %B, i64 8, i32 4, i1 false)
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br label %inc
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inc:
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%j.inc = add nuw nsw i32 %j, 1
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br label %for
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exit:
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br label %return
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return:
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ret void
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}
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; CHECK-LABEL: polly.start:
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; CHECK: call void @llvm.memcpy
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; CHECK-NOT: !alias.scope
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