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llvm-project/llvm/test/CodeGen/X86/dllimport-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. llvm-svn: 199218
2014-01-14 23:22:47 +08:00
; RUN: llc -mtriple x86_64-pc-win32 < %s | FileCheck %s
; RUN: llc -mtriple x86_64-pc-mingw32 < %s | FileCheck %s
;
; RUN: llc -mtriple x86_64-pc-mingw32 -O0 < %s | FileCheck %s -check-prefix=FAST
; PR6275
;
Delete -std-compile-opts. These days -std-compile-opts was just a silly alias for -O3. llvm-svn: 219951
2014-10-17 04:00:02 +08:00
; RUN: opt -mtriple x86_64-pc-win32 -O3 -S < %s | FileCheck %s -check-prefix=OPT
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. llvm-svn: 199218
2014-01-14 23:22:47 +08:00
@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() {
ret void
}
declare void @dummy(...)
define void @use() nounwind {
; CHECK: callq *__imp_fun(%rip)
; FAST: movq __imp_fun(%rip), [[R:%[a-z]{3}]]
; FAST-NEXT: callq *[[R]]
call void @fun()
; CHECK: callq *__imp_inline1(%rip)
; CHECK: callq *__imp_inline2(%rip)
call void @inline1()
call void @inline2()
; 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: movq __imp_Var1(%rip), [[R1:%[a-z]{3}]]
; CHECK-DAG: movq __imp_Var2(%rip), [[R2:%[a-z]{3}]]
%1 = load i32* @Var1
%2 = load i32* @Var2
call void(...)* @dummy(i32 %1, i32 %2)
ret void
}