[WebAssembly] Remove ELF file support.

This support was partial and temporary.  Now that we have
wasm object file support its no longer needed.

Differential Revision: https://reviews.llvm.org/D48744

llvm-svn: 337222

1 files changed, 0 insertions, 65 deletions

diff --git a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyELFObjectWriter.cpp b/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyELFObjectWriter.cpp
deleted file mode 100644
index 0d9cb7b96f6..00000000000
--- a/llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyELFObjectWriter.cpp
+++ /dev/null
@@ -1,65 +0,0 @@
-//===-- WebAssemblyELFObjectWriter.cpp - WebAssembly ELF Writer -----------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-///
-/// \file
-/// This file handles ELF-specific object emission, converting LLVM's
-/// internal fixups into the appropriate relocations.
-///
-//===----------------------------------------------------------------------===//
-
-#include "MCTargetDesc/WebAssemblyMCTargetDesc.h"
-#include "llvm/MC/MCELFObjectWriter.h"
-#include "llvm/MC/MCFixup.h"
-#include "llvm/MC/MCObjectWriter.h"
-#include "llvm/Support/ErrorHandling.h"
-using namespace llvm;
-
-namespace {
-class WebAssemblyELFObjectWriter final : public MCELFObjectTargetWriter {
-public:
-  WebAssemblyELFObjectWriter(bool Is64Bit, uint8_t OSABI);
-
-protected:
-  unsigned getRelocType(MCContext &Ctx, const MCValue &Target,
-                        const MCFixup &Fixup, bool IsPCRel) const override;
-};
-} // end anonymous namespace
-
-WebAssemblyELFObjectWriter::WebAssemblyELFObjectWriter(bool Is64Bit,
-                                                       uint8_t OSABI)
-    : MCELFObjectTargetWriter(Is64Bit, OSABI, ELF::EM_WEBASSEMBLY,
-                              /*HasRelocationAddend=*/false) {}
-
-unsigned WebAssemblyELFObjectWriter::getRelocType(MCContext &Ctx,
-                                                  const MCValue &Target,
-                                                  const MCFixup &Fixup,
-                                                  bool IsPCRel) const {
-  // WebAssembly functions are not allocated in the address space. To resolve a
-  // pointer to a function, we must use a special relocation type.
-  if (const MCSymbolRefExpr *SyExp =
-          dyn_cast<MCSymbolRefExpr>(Fixup.getValue()))
-    if (SyExp->getKind() == MCSymbolRefExpr::VK_WebAssembly_FUNCTION)
-      return ELF::R_WEBASSEMBLY_FUNCTION;
-
-  switch (Fixup.getKind()) {
-  case FK_Data_4:
-    assert(!is64Bit() && "4-byte relocations only supported on wasm32");
-    return ELF::R_WEBASSEMBLY_DATA;
-  case FK_Data_8:
-    assert(is64Bit() && "8-byte relocations only supported on wasm64");
-    return ELF::R_WEBASSEMBLY_DATA;
-  default:
-    llvm_unreachable("unimplemented fixup kind");
-  }
-}
-
-std::unique_ptr<MCObjectTargetWriter>
-llvm::createWebAssemblyELFObjectWriter(bool Is64Bit, uint8_t OSABI) {
-  return llvm::make_unique<WebAssemblyELFObjectWriter>(Is64Bit, OSABI);
-}