File: strlen.ll

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llvm-toolchain-13 1%3A13.0.1-11
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; RUN: opt -S -inferattrs -basic-aa -licm < %s | FileCheck %s

define void @test(i64* noalias %loc, i8* noalias %a) {
; CHECK-LABEL: @test
; CHECK: @strlen
; CHECK-LABEL: loop:
  br label %loop

loop:
  %res = call i64 @strlen(i8* %a)
  store i64 %res, i64* %loc
  br label %loop
}

; CHECK: declare i64 @strlen(i8* nocapture) #0
; CHECK: attributes #0 = { argmemonly mustprogress nofree nounwind readonly willreturn }
declare i64 @strlen(i8*)