[PATCH] D116851: [MemoryBuiltins] Add field for alignment argument

[Dávid Bolvanský via Phabricator via llvm-commits]

xbolva00 added a comment.

BTW, https://clang.llvm.org/docs/AttributeReference.html#id330 ... is it broken just for me or.. ?

  void *b(void *v, int align) __attribute__((alloc_size(2), alloc_align(2))) ;
  
  void *b(void *v, int align) {
      return v;
  }



  ; ModuleID = '/app/example.cpp'
  source_filename = "/app/example.cpp"
  target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
  target triple = "x86_64-unknown-linux-gnu"
  
  ; Function Attrs: mustprogress nofree norecurse nosync nounwind readnone uwtable willreturn allocsize(1)
  define dso_local i8* @_Z1bPvi(i8* readnone returned %0, i32 %1) local_unnamed_addr #0 {
    ret i8* %0
  }
  
  attributes #0 = { mustprogress nofree norecurse nosync nounwind readnone uwtable willreturn allocsize(1) "frame-pointer"="none" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
  
  !llvm.module.flags = !{!0, !1}
  !llvm.ident = !{!2}
  
  !0 = !{i32 1, !"wchar_size", i32 4}
  !1 = !{i32 7, !"uwtable", i32 1}
  !2 = !{!"clang version 14.0.0 (https://github.com/llvm/llvm-project.git d23fa4f2f1319039b7d939a4bf68c493ba26b07a)"}

Clang seems to ignore alloc_align attribute?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D116851/new/

https://reviews.llvm.org/D116851