maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test/ThinLTO/X86/linkonce_resolution_comdat.ll

32 lines
1.3 KiB
LLVM
Raw Normal View History

[ThinLTO] Remove functions resolved to available_externally from comdats Summary: thinLTOResolveWeakForLinkerModule needs to drop any preempted weak symbols that were converted to available_externally from comdats, otherwise we will get a verification failure (since available_externally is a declaration for the linker, and no declarations can be in a comdat). Reviewers: mehdi_amini Subscribers: llvm-commits, mehdi_amini Differential Revision: https://reviews.llvm.org/D23015 llvm-svn: 278739
2016-08-16 05:00:04 +08:00
; This test ensures that we drop the preempted copy of @f from %t2.bc from its
; comdat after making it available_externally. If not we would get a
; verification error.
; RUN: opt -module-summary %s -o %t1.bc
; RUN: opt -module-summary %p/Inputs/linkonce_resolution_comdat.ll -o %t2.bc
[ThinLTO] Fix temp file dumping, enable via llvm-lto and test it Summary: Fixed a bug in ThinLTOCodeGenerator's temp file dumping. The Twine needs to be passed directly as an argument, or a copy saved into a std::string. It doesn't seem there are any consumers of this, so I added a new option to llvm-lto to enable saving of temp files during ThinLTO, and augmented a test to use it to check post-import but pre-opt bitcode. Reviewers: mehdi_amini Subscribers: llvm-commits, mehdi_amini Differential Revision: https://reviews.llvm.org/D23525 llvm-svn: 278761
2016-08-16 07:24:57 +08:00
; RUN: llvm-lto -thinlto-action=run %t1.bc %t2.bc -exported-symbol=f -exported-symbol=g -thinlto-save-temps=%t3.
; RUN: llvm-dis %t3.0.3.imported.bc -o - | FileCheck %s --check-prefix=IMPORT1
; RUN: llvm-dis %t3.1.3.imported.bc -o - | FileCheck %s --check-prefix=IMPORT2
; Copy from first module is prevailing and converted to weak_odr, copy
; from second module is preempted and converted to available_externally and
; removed from comdat.
; IMPORT1: define weak_odr i32 @f(i8*) unnamed_addr comdat($c1) {
; IMPORT2: define available_externally i32 @f(i8*) unnamed_addr {
[ThinLTO] Remove functions resolved to available_externally from comdats Summary: thinLTOResolveWeakForLinkerModule needs to drop any preempted weak symbols that were converted to available_externally from comdats, otherwise we will get a verification failure (since available_externally is a declaration for the linker, and no declarations can be in a comdat). Reviewers: mehdi_amini Subscribers: llvm-commits, mehdi_amini Differential Revision: https://reviews.llvm.org/D23015 llvm-svn: 278739
2016-08-16 05:00:04 +08:00
; RUN: llvm-nm -o - < %t1.bc.thinlto.o | FileCheck %s --check-prefix=NM1
; NM1: W f
; RUN: llvm-nm -o - < %t2.bc.thinlto.o | FileCheck %s --check-prefix=NM2
; f() would have been turned into available_externally since it is preempted,
; and inlined into g()
; NM2-NOT: f
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
$c1 = comdat any
define linkonce_odr i32 @f(i8*) unnamed_addr comdat($c1) {
ret i32 43
}