llvm-6502/test/CodeGen/X86/dllimport.ll
Nico Rieck 38f68c5a2e 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

60 lines
1.5 KiB
LLVM

; RUN: llc -mtriple i386-pc-win32 < %s | FileCheck %s
; RUN: llc -mtriple i386-pc-mingw32 < %s | FileCheck %s
;
; RUN: llc -mtriple i386-pc-mingw32 -O0 < %s | FileCheck %s -check-prefix=FAST
; PR6275
;
; RUN: opt -mtriple i386-pc-win32 -std-compile-opts -S < %s | FileCheck %s -check-prefix=OPT
@Var1 = external dllimport global i32
@Var2 = available_externally dllimport unnamed_addr constant i32 1
declare dllimport void @fun()
define available_externally dllimport void @inline1() {
ret void
}
define available_externally dllimport void @inline2() alwaysinline {
ret void
}
declare dllimport x86_stdcallcc void @stdfun() nounwind
declare dllimport x86_fastcallcc void @fastfun() nounwind
declare dllimport x86_thiscallcc void @thisfun() nounwind
declare void @dummy(...)
define void @use() nounwind {
; CHECK: calll *__imp__fun
; FAST: movl __imp__fun, [[R:%[a-z]{3}]]
; FAST-NEXT: calll *[[R]]
call void @fun()
; CHECK: calll *__imp__inline1
; CHECK: calll *__imp__inline2
call void @inline1()
call void @inline2()
; CHECK: calll *__imp__stdfun@0
; CHECK: calll *__imp_@fastfun@0
; CHECK: calll *__imp__thisfun
call void @stdfun()
call void @fastfun()
call void @thisfun()
; available_externally uses go away
; OPT-NOT: call void @inline1()
; OPT-NOT: call void @inline2()
; OPT-NOT: load i32* @Var2
; OPT: call void (...)* @dummy(i32 %1, i32 1)
; CHECK-DAG: movl __imp__Var1, [[R1:%[a-z]{3}]]
; CHECK-DAG: movl __imp__Var2, [[R2:%[a-z]{3}]]
%1 = load i32* @Var1
%2 = load i32* @Var2
call void(...)* @dummy(i32 %1, i32 %2)
ret void
}