llvm-mirror/test/ThinLTO/X86/weak_externals.ll
Amy Huang 062b5d40cb Reland "Change the X86 datalayout to add three address spaces
for 32 bit signed, 32 bit unsigned, and 64 bit pointers."
This reverts 57076d3199fc2b0af4a3736b7749dd5462cacda5.

Original review at https://reviews.llvm.org/D64931.
Review for added fix at https://reviews.llvm.org/D66843.

llvm-svn: 371568
2019-09-10 23:15:38 +00:00

42 lines
1.9 KiB
LLVM

; Test that linkonce_odr and weak_odr variables which are visible to regular
; object (and so are not readonly) are not internalized by thin LTO.
; RUN: opt -module-summary %s -o %t.bc
; RUN: llvm-lto2 run -save-temps %t.bc -o %t.out \
; RUN: -r=%t.bc,_ZL5initSv,plx \
; RUN: -r=%t.bc,_ZN9SingletonI1SE11getInstanceEv,lx \
; RUN: -r=%t.bc,_ZZN9SingletonI1SE11getInstanceEvE8instance,lx \
; RUN: -r=%t.bc,_ZZN9SingletonI1SE11getInstanceEvE13instance_weak,lx
; RUN: llvm-dis %t.out.1.1.promote.bc -o - | FileCheck %s
; CHECK: @_ZZN9SingletonI1SE11getInstanceEvE8instance = available_externally dso_local global %struct.S zeroinitializer
; CHECK: @_ZZN9SingletonI1SE11getInstanceEvE13instance_weak = available_externally dso_local global %struct.S* null, align 8
; CHECK: define internal dereferenceable(16) %struct.S* @_ZN9SingletonI1SE11getInstanceEv() comdat
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"
%struct.S = type { i64, i64 }
$_ZN9SingletonI1SE11getInstanceEv = comdat any
$_ZZN9SingletonI1SE11getInstanceEvE8instance = comdat any
$_ZZN9SingletonI1SE11getInstanceEvE13instance_weak = comdat any
@_ZZN9SingletonI1SE11getInstanceEvE8instance = linkonce_odr dso_local global %struct.S zeroinitializer, comdat, align 8
@_ZZN9SingletonI1SE11getInstanceEvE13instance_weak = weak_odr dso_local global %struct.S* null, comdat, align 8
define dso_local void @_ZL5initSv() {
%1 = call dereferenceable(16) %struct.S* @_ZN9SingletonI1SE11getInstanceEv()
store %struct.S* %1, %struct.S** @_ZZN9SingletonI1SE11getInstanceEvE13instance_weak
%2 = getelementptr inbounds %struct.S, %struct.S* %1, i32 0, i32 0
store i64 1, i64* %2, align 8
ret void
}
define linkonce_odr dso_local dereferenceable(16) %struct.S* @_ZN9SingletonI1SE11getInstanceEv() #0 comdat align 2 {
ret %struct.S* @_ZZN9SingletonI1SE11getInstanceEvE8instance
}