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Emit data or code export directives based on the type.
Currently we look at the Aliasee to decide what type of export directive to use. It seems better to use the type of the alias directly. This is similar to how we handle the alias having the same address but other attributes (linkage, visibility) from the aliasee. With this patch it is now possible to do things like target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" target triple = "x86_64-pc-windows-msvc" @foo = global [6 x i8] c"\B8*\00\00\00\C3", section ".text", align 16 @f = dllexport alias i32 (), [6 x i8]* @foo !llvm.module.flags = !{!0} !0 = metadata !{i32 6, metadata !"Linker Options", metadata !1} !1 = metadata !{metadata !2, metadata !3} !2 = metadata !{metadata !"/DEFAULTLIB:libcmt.lib"} !3 = metadata !{metadata !"/DEFAULTLIB:oldnames.lib"} git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209600 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -670,16 +670,12 @@ void X86AsmPrinter::EmitEndOfAsmFile(Module &M) {
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DLLExportedGlobals.push_back(getSymbol(&Global));
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for (const auto &Alias : M.aliases()) {
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const GlobalValue *GV = &Alias;
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if (!GV->hasDLLExportStorageClass())
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if (!Alias.hasDLLExportStorageClass())
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continue;
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while (const GlobalAlias *A = dyn_cast<GlobalAlias>(GV))
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GV = A->getAliasee();
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if (isa<Function>(GV))
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if (Alias.getType()->getElementType()->isFunctionTy())
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DLLExportedFns.push_back(getSymbol(&Alias));
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else if (isa<GlobalVariable>(GV))
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else
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DLLExportedGlobals.push_back(getSymbol(&Alias));
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}
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@ -72,6 +72,8 @@ define weak_odr dllexport void @weak1() {
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; CHECK: weak_alias = f1
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@weak_alias = dllexport alias weak_odr void()* @f1
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@blob = global [6 x i8] c"\B8*\00\00\00\C3", section ".text", align 16
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@blob_alias = dllexport alias i32 (), [6 x i8]* @blob
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; CHECK: .section .drectve
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; WIN32: /EXPORT:Var1,DATA"
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@ -88,6 +90,7 @@ define weak_odr dllexport void @weak1() {
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; WIN32: /EXPORT:alias2"
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; WIN32: /EXPORT:alias3"
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; WIN32: /EXPORT:weak_alias"
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; WIN32: /EXPORT:blob_alias"
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; MINGW: -export:Var1,data"
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; MINGW: -export:Var2,data"
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; MINGW: -export:Var3,data"
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@ -102,3 +105,4 @@ define weak_odr dllexport void @weak1() {
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; MINGW: -export:alias2"
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; MINGW: -export:alias3"
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; MINGW: -export:weak_alias"
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; MINGW: -export:blob_alias"
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