xref: /llvm-project/llvm/test/Transforms/InstCombine/alloc-realloc-free.ll (revision 4ab40eca080965c65802710e39adbb78c4ce7bde)

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --scrub-attributes
; RUN: opt -S -passes=instcombine < %s | FileCheck %s

define dso_local void @test() local_unnamed_addr #0 {
; CHECK-LABEL: @test(
; CHECK-NEXT:    ret void
;
  %1 = tail call noalias align 16 dereferenceable_or_null(4) ptr @malloc(i64 4) #4
  %2 = tail call align 16 dereferenceable_or_null(6) ptr @realloc(ptr %1, i64 6) #4
  tail call void @free(ptr %2) #4
  ret void
}

declare dso_local noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #1
declare dso_local noalias noundef ptr @realloc(ptr nocapture allocptr, i64 noundef) local_unnamed_addr #2
declare dso_local void @free(ptr nocapture allocptr noundef) local_unnamed_addr #3
declare void @llvm.dbg.value(metadata, metadata, metadata) #3

attributes #0 = { mustprogress nounwind uwtable willreturn }
attributes #1 = { inaccessiblememonly mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") "alloc-family"="malloc" }
attributes #2 = { inaccessiblemem_or_argmemonly mustprogress nounwind willreturn allockind("realloc") "alloc-family"="malloc" }
attributes #3 = { nofree nosync nounwind readnone speculatable willreturn allockind("free") "alloc-family"="malloc" }
attributes #4 = { nounwind }