43 lines
1.8 KiB
LLVM
43 lines
1.8 KiB
LLVM
; Test of comdat handling with mixed thinlto and regular lto compilation.
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; This module is compiled with ThinLTO
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; RUN: opt -module-summary -o %t1.o %s
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; Input module compiled for regular LTO
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; RUN: opt -o %t2.o %p/Inputs/comdat-mixed-lto.ll
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; The copy of C from this module is prevailing. The copy of C from the
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; regular LTO module is not prevailing, and will be dropped to
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; available_externally.
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; RUN: llvm-lto2 run -r=%t1.o,C,pl -r=%t2.o,C,l -r=%t2.o,testglobfunc,lxp -r=%t1.o,testglobfunc,lx -o %t3 %t1.o %t2.o -save-temps
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; The Input module (regular LTO) is %t3.0. Check to make sure that we removed
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; __cxx_global_var_init and testglobfunc from comdat. Also check to ensure
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; that testglobfunc was dropped to available_externally. Otherwise we would
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; have linker multiply defined errors as it is no longer in a comdat and
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; would clash with the copy from this module.
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; RUN: llvm-dis %t3.0.0.preopt.bc -o - | FileCheck %s
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; CHECK: define internal void @__cxx_global_var_init() section ".text.startup" {
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; CHECK: define available_externally dso_local void @testglobfunc() section ".text.startup" {
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; ModuleID = 'comdat-mixed-lto.o'
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source_filename = "comdat-mixed-lto.cpp"
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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%"class.Test::ptr" = type { i32 }
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$C = comdat any
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@C = linkonce_odr global %"class.Test::ptr" zeroinitializer, comdat, align 4
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@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @__cxx_global_var_init, i8* bitcast (%"class.Test::ptr"* @C to i8*) }]
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define void @testglobfunc() #1 section ".text.startup" comdat($C) {
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entry:
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ret void
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}
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; Function Attrs: noinline uwtable
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define internal void @__cxx_global_var_init() #1 section ".text.startup" comdat($C) {
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entry:
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ret void
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}
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