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[ThinLTO] Disallow multiple prevailing defs

Browse Source 
https://reviews.llvm.org/D41291

llvm-svn: 320825
This commit is contained in:
Eugene Leviant 2017-12-15 16:27:33 +00:00
parent 5e10face9a
commit cdd4b18b3c
4 changed files with 6 additions and 24 deletions
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4
lib/LTO/LTO.cpp
View File

@ -417,8 +417,8 @@ void LTO::addModuleToGlobalRes(ArrayRef<InputFile::Symbol> Syms,
auto &GlobalRes = GlobalResolutions[Sym.getName()];
GlobalRes.UnnamedAddr &= Sym.isUnnamedAddr();
if (Res.Prevailing) {
assert((GlobalRes.IRName.empty() || !Sym.getIRName().empty()) &&
"Overriding existing resolution with undefined asm symbol");
assert(GlobalRes.IRName.empty() &&
"Multiple prevailing defs are not allowed");
GlobalRes.IRName = Sym.getIRName();
}

18
test/LTO/Resolution/X86/common2.ll
View File

@ -52,24 +52,6 @@
; RUN: -r %t2.bc,bar,px
; RUN: llvm-dis < %t.o.0.0.preopt.bc | FileCheck %s --check-prefix=NONE-PREVAILED2
; Client marked both as prevailing
; RUN: llvm-lto2 run %t1.bc %t2.bc -o %t.o -save-temps \
; RUN: -r %t1.bc,v,px \
; RUN: -r %t2.bc,v,px \
; RUN: -r %t1.bc,foo,px \
; RUN: -r %t2.bc,bar,px
; RUN: llvm-dis < %t.o.0.0.preopt.bc | FileCheck %s --check-prefix=BOTH-PREVAILED1
; Same as before, but reversing the order of the inputs
; RUN: llvm-lto2 run %t2.bc %t1.bc -o %t.o -save-temps \
; RUN: -r %t1.bc,v,px \
; RUN: -r %t2.bc,v,px \
; RUN: -r %t1.bc,foo,px \
; RUN: -r %t2.bc,bar,px
; RUN: llvm-dis < %t.o.0.0.preopt.bc | FileCheck %s --check-prefix=BOTH-PREVAILED2
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

4
test/LTO/Resolution/X86/dead-strip-fulllto.ll
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@ -2,13 +2,13 @@
; RUN: opt -module-summary -o %t2 %S/Inputs/dead-strip-fulllto.ll
; RUN: llvm-lto2 run %t -r %t,main,px -r %t,live1,p -r %t,live2,p -r %t,dead2,p \
; RUN: %t2 -r %t2,live1,p -r %t2,live2, -r %t2,dead1,p -r %t2,dead2, -r %t2,odr, \
; RUN: %t2 -r %t2,live1, -r %t2,live2, -r %t2,dead1,p -r %t2,dead2, -r %t2,odr, \
; RUN: -save-temps -o %t3
; RUN: llvm-nm %t3.0 | FileCheck --check-prefix=FULL %s
; RUN: llvm-nm %t3.1 | FileCheck --check-prefix=THIN %s
; RUN: llvm-lto2 run %t -r %t,main,px -r %t,live1,p -r %t,live2,p -r %t,dead2,p \
; RUN: %t2 -r %t2,live1,p -r %t2,live2, -r %t2,dead1,p -r %t2,dead2, -r %t2,odr, \
; RUN: %t2 -r %t2,live1, -r %t2,live2, -r %t2,dead1,p -r %t2,dead2, -r %t2,odr, \
; RUN: -save-temps -o %t3 -O0
; RUN: llvm-nm %t3.0 | FileCheck --check-prefix=FULL %s
; RUN: llvm-nm %t3.1 | FileCheck --check-prefix=THIN %s

4
test/ThinLTO/X86/deadstrip.ll
View File

@ -16,7 +16,7 @@
; RUN: -r %t1.bc,_boo,l \
; RUN: -r %t2.bc,_baz,pl \
; RUN: -r %t2.bc,_boo,pl \
; RUN: -r %t2.bc,_dead_func,pl \
; RUN: -r %t2.bc,_dead_func,l \
; RUN: -r %t2.bc,_another_dead_func,pl
; RUN: llvm-dis < %t.out.0.3.import.bc | FileCheck %s --check-prefix=LTO2
; RUN: llvm-dis < %t.out.1.3.import.bc | FileCheck %s --check-prefix=LTO2-CHECK2
@ -81,7 +81,7 @@
; RUN: -r %t1.bc,_boo,l \
; RUN: -r %t3.bc,_baz,pl \
; RUN: -r %t3.bc,_boo,pl \
; RUN: -r %t3.bc,_dead_func,pl \
; RUN: -r %t3.bc,_dead_func,l \
; RUN: -r %t3.bc,_another_dead_func,pl
; RUN: llvm-dis < %t4.out.1.3.import.bc | FileCheck %s --check-prefix=CHECK-NOTDEAD
; RUN: llvm-nm %t4.out.0 | FileCheck %s --check-prefix=CHECK-NM-NOTDEAD