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Imported Upstream version 5.18.0.167
Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a
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; RUN: opt -basicaa -dse -S < %s | FileCheck %s
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
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define void @fn(i8* nocapture %buf) #0 {
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entry:
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; We would not eliminate the first memcpy with data layout, and we should not
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; eliminate it without data layout.
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; CHECK-LABEL: @fn
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; CHECK: tail call void @llvm.memcpy.p0i8.p0i8.i64
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; CHECK: tail call void @llvm.memcpy.p0i8.p0i8.i64
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; CHECK: ret void
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%arrayidx = getelementptr i8, i8* %buf, i64 18
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tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %arrayidx, i8* %buf, i64 18, i32 1, i1 false)
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store i8 1, i8* %arrayidx, align 1
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tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %buf, i8* %arrayidx, i64 18, i32 1, i1 false)
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ret void
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}
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