Files
clang-p2996/llvm/test/LTO/Resolution/X86/Inputs/comdat.ll
Teresa Johnson 9ba95f99f3 Restore "Resolution-based LTO API."
This restores commit r278330, with fixes for a few bot failures:
- Fix a late change I had made to the save temps output file that I
  missed due to existing files sitting on my disk
- Fix a bunch of Windows bot failures with "ambiguous call to overloaded
  function" due to confusion between llvm::make_unique vs
  std::make_unique (preface the new make_unique calls with "llvm::")
- Attempt to fix a modules bot failure by adding a missing include
  to LTO/Config.h.

Original change:

Resolution-based LTO API.

Summary:
This introduces a resolution-based LTO API. The main advantage of this API over
existing APIs is that it allows the linker to supply a resolution for each
symbol in each object, rather than the combined object as a whole. This will
become increasingly important for use cases such as ThinLTO which require us
to process symbol resolutions in a more complicated way than just adjusting
linkage.

Patch by Peter Collingbourne.

Reviewers: rafael, tejohnson, mehdi_amini

Subscribers: lhames, tejohnson, mehdi_amini, llvm-commits

Differential Revision: https://reviews.llvm.org/D20268

llvm-svn: 278338
2016-08-11 14:58:12 +00:00

29 lines
714 B
LLVM

target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
$c2 = comdat any
$c1 = comdat any
; This is only present in this file. The linker will keep $c1 from the first
; file and this will be undefined.
@will_be_undefined = global i32 1, comdat($c1)
@v1 = weak_odr global i32 41, comdat($c2)
define weak_odr protected i32 @f1(i8* %this) comdat($c2) {
bb20:
store i8* %this, i8** null
br label %bb21
bb21:
ret i32 41
}
@r21 = global i32* @v1
@r22 = global i32(i8*)* @f1
@a21 = alias i32, i32* @v1
@a22 = alias i16, bitcast (i32* @v1 to i16*)
@a23 = alias i32(i8*), i32(i8*)* @f1
@a24 = alias i16, bitcast (i32(i8*)* @f1 to i16*)
@a25 = alias i16, i16* @a24