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llvm-6502/test/CodeGen/X86/dllexport-x86_64.ll

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Decouple dllexport/dllimport from linkage Representing dllexport/dllimport as distinct linkage types prevents using these attributes on templates and inline functions. Instead of introducing further mixed linkage types to include linkonce and weak ODR, the old import/export linkage types are replaced with a new separate visibility-like specifier: define available_externally dllimport void @f() {} @Var = dllexport global i32 1, align 4 Linkage for dllexported globals and functions is now equal to their linkage without dllexport. Imported globals and functions must be either declarations with external linkage, or definitions with AvailableExternallyLinkage. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199218 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-14 15:22:47 +00:00
; RUN: llc -mtriple x86_64-pc-win32 < %s | FileCheck -check-prefix=CHECK -check-prefix=WIN32 %s
; RUN: llc -mtriple x86_64-pc-mingw32 < %s | FileCheck -check-prefix=CHECK -check-prefix=MINGW %s
; CHECK: .text
define void @notExported() {
ret void
}
; CHECK: .globl f1
define dllexport void @f1() {
ret void
}
; CHECK: .globl f2
define dllexport void @f2() unnamed_addr {
ret void
}
; CHECK: .section .text,"xr",discard,lnk1
; CHECK: .globl lnk1
define linkonce_odr dllexport void @lnk1() {
ret void
}
; CHECK: .section .text,"xr",discard,lnk2
; CHECK: .globl lnk2
define linkonce_odr dllexport void @lnk2() alwaysinline {
ret void
}
; CHECK: .section .text,"xr",discard,weak1
; CHECK: .globl weak1
define weak_odr dllexport void @weak1() {
ret void
}
; CHECK: .data
; CHECK: .globl Var1
@Var1 = dllexport global i32 1, align 4
MC: honour IMAGE_SCN_CNT_INITIALIZED_DATA Emit the flag to indicate to the assembler that a section contains data if there is pre-populated data present. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207028 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-23 21:29:34 +00:00
; CHECK: .rdata,"rd"
Decouple dllexport/dllimport from linkage Representing dllexport/dllimport as distinct linkage types prevents using these attributes on templates and inline functions. Instead of introducing further mixed linkage types to include linkonce and weak ODR, the old import/export linkage types are replaced with a new separate visibility-like specifier: define available_externally dllimport void @f() {} @Var = dllexport global i32 1, align 4 Linkage for dllexported globals and functions is now equal to their linkage without dllexport. Imported globals and functions must be either declarations with external linkage, or definitions with AvailableExternallyLinkage. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199218 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-14 15:22:47 +00:00
; CHECK: .globl Var2
@Var2 = dllexport unnamed_addr constant i32 1
; CHECK: .comm Var3
@Var3 = common dllexport global i32 0, align 4
MC: honour IMAGE_SCN_CNT_INITIALIZED_DATA Emit the flag to indicate to the assembler that a section contains data if there is pre-populated data present. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207028 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-23 21:29:34 +00:00
; CHECK: .section .data,"wd",discard,WeakVar1
Decouple dllexport/dllimport from linkage Representing dllexport/dllimport as distinct linkage types prevents using these attributes on templates and inline functions. Instead of introducing further mixed linkage types to include linkonce and weak ODR, the old import/export linkage types are replaced with a new separate visibility-like specifier: define available_externally dllimport void @f() {} @Var = dllexport global i32 1, align 4 Linkage for dllexported globals and functions is now equal to their linkage without dllexport. Imported globals and functions must be either declarations with external linkage, or definitions with AvailableExternallyLinkage. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199218 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-14 15:22:47 +00:00
; CHECK: .globl WeakVar1
@WeakVar1 = weak_odr dllexport global i32 1, align 4
MC: honour IMAGE_SCN_CNT_INITIALIZED_DATA Emit the flag to indicate to the assembler that a section contains data if there is pre-populated data present. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207028 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-23 21:29:34 +00:00
; CHECK: .section .rdata,"rd",discard,WeakVar2
Decouple dllexport/dllimport from linkage Representing dllexport/dllimport as distinct linkage types prevents using these attributes on templates and inline functions. Instead of introducing further mixed linkage types to include linkonce and weak ODR, the old import/export linkage types are replaced with a new separate visibility-like specifier: define available_externally dllimport void @f() {} @Var = dllexport global i32 1, align 4 Linkage for dllexported globals and functions is now equal to their linkage without dllexport. Imported globals and functions must be either declarations with external linkage, or definitions with AvailableExternallyLinkage. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199218 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-14 15:22:47 +00:00
; CHECK: .globl WeakVar2
@WeakVar2 = weak_odr dllexport unnamed_addr constant i32 1
Handle dllexport for global aliases git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199219 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-14 15:23:25 +00:00
; CHECK: .globl alias
; CHECK: alias = notExported
@alias = dllexport alias void()* @notExported
; CHECK: .globl alias2
; CHECK: alias2 = f1
@alias2 = dllexport alias void()* @f1
; CHECK: .globl alias3
Prevent alias from pointing to weak aliases. This adds back r204781. Original message: Aliases are just another name for a position in a file. As such, the regular symbol resolutions are not applied. For example, given define void @my_func() { ret void } @my_alias = alias weak void ()* @my_func @my_alias2 = alias void ()* @my_alias We produce without this patch: .weak my_alias my_alias = my_func .globl my_alias2 my_alias2 = my_alias That is, in the resulting ELF file my_alias, my_func and my_alias are just 3 names pointing to offset 0 of .text. That is *not* the semantics of IR linking. For example, linking in a @my_alias = alias void ()* @other_func would require the strong my_alias to override the weak one and my_alias2 would end up pointing to other_func. There is no way to represent that with aliases being just another name, so the best solution seems to be to just disallow it, converting a miscompile into an error. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204934 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-27 15:26:56 +00:00
; CHECK: alias3 = notExported
Handle dllexport for global aliases git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199219 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-14 15:23:25 +00:00
@alias3 = dllexport alias void()* @alias
; CHECK: .weak weak_alias
; CHECK: weak_alias = f1
@weak_alias = dllexport alias weak_odr void()* @f1
Decouple dllexport/dllimport from linkage Representing dllexport/dllimport as distinct linkage types prevents using these attributes on templates and inline functions. Instead of introducing further mixed linkage types to include linkonce and weak ODR, the old import/export linkage types are replaced with a new separate visibility-like specifier: define available_externally dllimport void @f() {} @Var = dllexport global i32 1, align 4 Linkage for dllexported globals and functions is now equal to their linkage without dllexport. Imported globals and functions must be either declarations with external linkage, or definitions with AvailableExternallyLinkage. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199218 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-14 15:22:47 +00:00
; CHECK: .section .drectve
; WIN32: /EXPORT:Var1,DATA
; WIN32: /EXPORT:Var2,DATA
; WIN32: /EXPORT:Var3,DATA
; WIN32: /EXPORT:WeakVar1,DATA
; WIN32: /EXPORT:WeakVar2,DATA
; WIN32: /EXPORT:f1
; WIN32: /EXPORT:f2
; WIN32: /EXPORT:lnk1
; WIN32: /EXPORT:lnk2
; WIN32: /EXPORT:weak1
Handle dllexport for global aliases git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199219 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-14 15:23:25 +00:00
; WIN32: /EXPORT:alias
; WIN32: /EXPORT:alias2
; WIN32: /EXPORT:alias3
; WIN32: /EXPORT:weak_alias
Decouple dllexport/dllimport from linkage Representing dllexport/dllimport as distinct linkage types prevents using these attributes on templates and inline functions. Instead of introducing further mixed linkage types to include linkonce and weak ODR, the old import/export linkage types are replaced with a new separate visibility-like specifier: define available_externally dllimport void @f() {} @Var = dllexport global i32 1, align 4 Linkage for dllexported globals and functions is now equal to their linkage without dllexport. Imported globals and functions must be either declarations with external linkage, or definitions with AvailableExternallyLinkage. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199218 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-14 15:22:47 +00:00
; MINGW: -export:Var1,data
; MINGW: -export:Var2,data
; MINGW: -export:Var3,data
; MINGW: -export:WeakVar1,data
; MINGW: -export:WeakVar2,data
; MINGW: -export:f1
; MINGW: -export:f2
; MINGW: -export:lnk1
; MINGW: -export:lnk2
; MINGW: -export:weak1
Handle dllexport for global aliases git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199219 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-14 15:23:25 +00:00
; MINGW: -export:alias
; MINGW: -export:alias2
; MINGW: -export:alias3
; MINGW: -export:weak_alias
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