[MS][ARM64] Hoist __ImageBase handling into TargetLoweringObjectFileCOFF

All COFF targets should use @IMGREL32 relocations for symbol differences
against __ImageBase. Do the same for getSectionForConstant, so that
immediates lowered to globals get merged across TUs.

Patch by Chris January

Differential Revision: https://reviews.llvm.org/D47783

llvm-svn: 334523

1 files changed, 0 insertions, 13 deletions

diff --git a/llvm/lib/Target/X86/X86TargetObjectFile.h b/llvm/lib/Target/X86/X86TargetObjectFile.h
index 19078618d62..d045094edb1 100644
--- a/llvm/lib/Target/X86/X86TargetObjectFile.h
+++ b/llvm/lib/Target/X86/X86TargetObjectFile.h
@@ -71,19 +71,6 @@ namespace llvm {
     void Initialize(MCContext &Ctx, const TargetMachine &TM) override;
   };
 
-  /// This implementation is used for Windows targets on x86 and x86-64.
-  class X86WindowsTargetObjectFile : public TargetLoweringObjectFileCOFF {
-    const MCExpr *
-    lowerRelativeReference(const GlobalValue *LHS, const GlobalValue *RHS,
-                           const TargetMachine &TM) const override;
-
-    /// Given a mergeable constant with the specified size and relocation
-    /// information, return a section that it should be placed in.
-    MCSection *getSectionForConstant(const DataLayout &DL, SectionKind Kind,
-                                     const Constant *C,
-                                     unsigned &Align) const override;
-  };
-
 } // end namespace llvm
 
 #endif