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23 lines
709 B
LLVM
23 lines
709 B
LLVM
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; RUN: opt < %s -basicaa -memcpyopt -S | FileCheck %s
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target datalayout = "e"
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declare void @foo(i8*)
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declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
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define void @test() {
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%ptr1 = alloca i8
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%ptr2 = alloca i8
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call void @foo(i8* %ptr2)
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %ptr1, i8* %ptr2, i32 1, i32 1, i1 false)
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call void @foo(i8* %ptr1)
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ret void
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; Check that the transformation isn't applied if the called function can
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; capture the pointer argument (i.e. the nocapture attribute isn't present)
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; CHECK-LABEL: @test(
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; CHECK: call void @foo(i8* %ptr2)
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; CHECK-NEXT: call void @llvm.memcpy
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; CHECK-NEXT: call void @foo(i8* %ptr1)
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}
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