maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

ARM: support export directives for Windows 

It seems that cl will emit the export directives for Windows ARM targets.  The
fact that it did this had originally been missed and this functionality was
never implemented.  This makes it possible to rely solely on the source code for
indicating what the exported interfaces are and brings us more compatibility
with cl.

llvm-svn: 269574
This commit is contained in:
Saleem Abdulrasool 2016-05-14 18:58:34 +00:00
parent 7e8dd51d50
commit 8df2f49889
2 changed files with 98 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
llvm/lib/Target/ARM/ARMAsmPrinter.cpp
View File

@ -548,6 +548,29 @@ void ARMAsmPrinter::EmitEndOfAsmFile(Module &M) {
OutStreamer->EmitAssemblerFlag(MCAF_SubsectionsViaSymbols);
}
if (TT.isOSBinFormatCOFF()) {
const auto &TLOF =
static_cast<const TargetLoweringObjectFileCOFF &>(getObjFileLowering());
std::string Flags;
raw_string_ostream OS(Flags);
for (const auto &Function : M)
TLOF.emitLinkerFlagsForGlobal(OS, &Function, *Mang);
for (const auto &Global : M.globals())
TLOF.emitLinkerFlagsForGlobal(OS, &Global, *Mang);
for (const auto &Alias : M.aliases())
TLOF.emitLinkerFlagsForGlobal(OS, &Alias, *Mang);
OS.flush();
// Output collected flags
if (!Flags.empty()) {
OutStreamer->SwitchSection(TLOF.getDrectveSection());
OutStreamer->EmitBytes(Flags);
}
}
// The last attribute to be emitted is ABI_optimization_goals
MCTargetStreamer &TS = *OutStreamer->getTargetStreamer();
ARMTargetStreamer &ATS = static_cast<ARMTargetStreamer &>(TS);

75
llvm/test/CodeGen/ARM/Windows/dllexport.ll Normal file
View File

@ -0,0 +1,75 @@
; RUN: llc -mtriple thumbv7--windows-itanium -filetype asm -o - %s | FileCheck %s -check-prefix CHECK -check-prefix CHECK-GNU
; RUN: llc -mtriple thumbv7--windows-gnu -filetype asm -o - %s | FileCheck %s -check-prefix CHECK -check-prefix CHECK-GNU
; RUN: llc -mtriple thumbv7--windows-msvc -filetype asm -o - %s | FileCheck %s -check-prefix CHECK -check-prefix CHECK-MSVC
define void @f() {
ret void
}
define dllexport void @g() {
ret void
}
define dllexport void @h() unnamed_addr {
ret void
}
declare dllexport void @i()
define linkonce_odr dllexport void @j() {
ret void
}
define linkonce_odr dllexport void @k() alwaysinline {
ret void
}
define weak_odr dllexport void @l() {
ret void
}
@m = dllexport global i32 0, align 4
@n = dllexport unnamed_addr constant i32 0
@o = common dllexport global i32 0, align 4
@p = weak_odr dllexport global i32 0, align 4
@q = weak_odr dllexport unnamed_addr constant i32 0
@r = dllexport alias void (), void () * @f
@s = dllexport alias void (), void () * @g
@t = dllexport alias void (), void () * @f
@u = weak_odr dllexport alias void (), void () * @g
; CHECK: .section .drectve
; CHECK-GNU-NOT: -export:f
; CHECK-GNU: -export:g
; CHECK-GNU-SAME: -export:h
; CHECK-GNU-NOT: -export:i
; CHECK-GNU-SAME: -export:j
; CHECK-GNU-SAME: -export:k
; CHECK-GNU-SAME: -export:l
; CHECK-GNU-SAME: -export:m,data
; CHECK-GNU-SAME: -export:n,data
; CHECK-GNU-SAME: -export:o,data
; CHECK-GNU-SAME: -export:p,data
; CHECK-GNU-SAME: -export:q,data
; CHECK-GNU-SAME: -export:r
; CHECK-GNU-SAME: -export:s
; CHECK-GNU-SAME: -export:t
; CHECK-GNU-SAME: -export:u
; CHECK-MSVC-NOT: /EXPORT:f
; CHECK-MSVC: /EXPORT:g
; CHECK-MSVC-SAME: /EXPORT:h
; CHECK-MSVC-NOT: /EXPORT:i
; CHECK-MSVC-SAME: /EXPORT:j
; CHECK-MSVC-SAME: /EXPORT:k
; CHECK-MSVC-SAME: /EXPORT:l
; CHECK-MSVC-SAME: /EXPORT:m,DATA
; CHECK-MSVC-SAME: /EXPORT:n,DATA
; CHECK-MSVC-SAME: /EXPORT:o,DATA
; CHECK-MSVC-SAME: /EXPORT:p,DATA
; CHECK-MSVC-SAME: /EXPORT:q,DATA
; CHECK-MSVC-SAME: /EXPORT:r
; CHECK-MSVC-SAME: /EXPORT:s
; CHECK-MSVC-SAME: /EXPORT:t
; CHECK-MSVC-SAME: /EXPORT:u