ELFObjectWriter: Make .reloc test generic

Move `Fixup.getKind() >= FirstLiteralRelocationKind` from target hooks
to ELFObjectWriter::recordRelocation.

Currently, getRelocType cannot be skipped for LoongArch due to #135519

Author: MaskRay

llvm/lib/MC/ELFObjectWriter.cpp

@@ -1383,7 +1383,14 @@ void ELFObjectWriter::recordRelocation(MCAssembler &Asm,
   if (!checkRelocation(Ctx, Fixup.getLoc(), &FixupSection, SecA))
     return;
 
-  unsigned Type = TargetObjectWriter->getRelocType(Ctx, Target, Fixup, IsPCRel);
+  auto EMachine = TargetObjectWriter->getEMachine();
+  unsigned Type;
+  if (Fixup.getKind() >= FirstLiteralRelocationKind &&
+      EMachine != ELF::EM_LOONGARCH)
+    Type = Fixup.getKind() - FirstLiteralRelocationKind;
+  else
+    Type = TargetObjectWriter->getRelocType(Ctx, Target, Fixup, IsPCRel);
+
   bool UseSectionSym =
       SymA && SymA->getBinding() == ELF::STB_LOCAL && !SymA->isUndefined();
   if (UseSectionSym) {
@@ -1402,8 +1409,7 @@ void ELFObjectWriter::recordRelocation(MCAssembler &Asm,
   } else {
     // In PPC64 ELFv1, .quad .TOC.@tocbase in the .opd section is expected to
     // reference the null symbol.
-    if (Type == ELF::R_PPC64_TOC &&
-        TargetObjectWriter->getEMachine() == ELF::EM_PPC64)
+    if (Type == ELF::R_PPC64_TOC && EMachine == ELF::EM_PPC64)
       SymA = nullptr;
 
     if (SymA) {

llvm/lib/Target/AArch64/MCTargetDesc/AArch64ELFObjectWriter.cpp

@@ -109,8 +109,6 @@ unsigned AArch64ELFObjectWriter::getRelocType(MCContext &Ctx,
                                               const MCFixup &Fixup,
                                               bool IsPCRel) const {
   unsigned Kind = Fixup.getTargetKind();
-  if (Kind >= FirstLiteralRelocationKind)
-    return Kind - FirstLiteralRelocationKind;
   AArch64MCExpr::Specifier RefKind =
       static_cast<AArch64MCExpr::Specifier>(Target.getSpecifier());
   AArch64MCExpr::Specifier SymLoc = AArch64MCExpr::getSymbolLoc(RefKind);

llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUELFObjectWriter.cpp

@@ -68,8 +68,6 @@ unsigned AMDGPUELFObjectWriter::getRelocType(MCContext &Ctx,
   }
 
   MCFixupKind Kind = Fixup.getKind();
-  if (Kind >= FirstLiteralRelocationKind)
-    return Kind - FirstLiteralRelocationKind;
   switch (Kind) {
   default: break;
   case FK_PCRel_4:

llvm/lib/Target/ARM/MCTargetDesc/ARMELFObjectWriter.cpp

@@ -80,8 +80,6 @@ unsigned ARMELFObjectWriter::GetRelocTypeInner(const MCValue &Target,
                                                bool IsPCRel,
                                                MCContext &Ctx) const {
   unsigned Kind = Fixup.getTargetKind();
-  if (Kind >= FirstLiteralRelocationKind)
-    return Kind - FirstLiteralRelocationKind;
   uint8_t Specifier = Target.getSpecifier();
   auto CheckFDPIC = [&](uint32_t Type) {
     if (getOSABI() != ELF::ELFOSABI_ARM_FDPIC)

llvm/lib/Target/AVR/MCTargetDesc/AVRELFObjectWriter.cpp

@@ -37,9 +37,6 @@ AVRELFObjectWriter::AVRELFObjectWriter(uint8_t OSABI)
 unsigned AVRELFObjectWriter::getRelocType(MCContext &Ctx, const MCValue &Target,
                                           const MCFixup &Fixup,
                                           bool IsPCRel) const {
-  const unsigned Kind = Fixup.getTargetKind();
-  if (Kind >= FirstLiteralRelocationKind)
-    return Kind - FirstLiteralRelocationKind;
   auto Modifier = AVRMCExpr::Specifier(Target.getSpecifier());
   switch ((unsigned)Fixup.getKind()) {
   case FK_Data_1:

llvm/lib/Target/Mips/MCTargetDesc/MipsELFObjectWriter.cpp

@@ -159,9 +159,6 @@ unsigned MipsELFObjectWriter::getRelocType(MCContext &Ctx,
                                            bool IsPCRel) const {
   // Determine the type of the relocation.
   unsigned Kind = Fixup.getTargetKind();
-  if (Kind >= FirstLiteralRelocationKind)
-    return Kind - FirstLiteralRelocationKind;
-
   switch (Target.getSpecifier()) {
   case MipsMCExpr::MEK_DTPREL:
   case MipsMCExpr::MEK_DTPREL_HI:

llvm/lib/Target/PowerPC/MCTargetDesc/PPCELFObjectWriter.cpp

@@ -42,8 +42,6 @@ unsigned PPCELFObjectWriter::getRelocType(MCContext &Ctx, const MCValue &Target,
                                           const MCFixup &Fixup,
                                           bool IsPCRel) const {
   MCFixupKind Kind = Fixup.getKind();
-  if (Kind >= FirstLiteralRelocationKind)
-    return Kind - FirstLiteralRelocationKind;
   SMLoc Loc = Fixup.getValue()->getLoc();
   auto Spec = static_cast<PPCMCExpr::Specifier>(Target.getSpecifier());
   switch (Spec) {

llvm/lib/Target/RISCV/MCTargetDesc/RISCVELFObjectWriter.cpp

@@ -53,9 +53,6 @@ unsigned RISCVELFObjectWriter::getRelocType(MCContext &Ctx,
   const MCExpr *Expr = Fixup.getValue();
   // Determine the type of the relocation
   unsigned Kind = Fixup.getTargetKind();
-  if (Kind >= FirstLiteralRelocationKind)
-    return Kind - FirstLiteralRelocationKind;
-
   auto Spec = RISCVMCExpr::Specifier(Target.getSpecifier());
   switch (Spec) {
   case RISCVMCExpr::VK_TPREL_HI:

llvm/lib/Target/Sparc/MCTargetDesc/SparcELFObjectWriter.cpp

@@ -42,10 +42,6 @@ unsigned SparcELFObjectWriter::getRelocType(MCContext &Ctx,
                                             const MCValue &Target,
                                             const MCFixup &Fixup,
                                             bool IsPCRel) const {
-  MCFixupKind Kind = Fixup.getKind();
-  if (Kind >= FirstLiteralRelocationKind)
-    return Kind - FirstLiteralRelocationKind;
-
   switch (Target.getSpecifier()) {
   case SparcMCExpr::VK_TLS_GD_HI22:
   case SparcMCExpr::VK_TLS_GD_LO10:

llvm/lib/Target/SystemZ/MCTargetDesc/SystemZELFObjectWriter.cpp

@@ -156,8 +156,6 @@ unsigned SystemZELFObjectWriter::getRelocType(MCContext &Ctx,
                                               bool IsPCRel) const {
   SMLoc Loc = Fixup.getLoc();
   unsigned Kind = Fixup.getKind();
-  if (Kind >= FirstLiteralRelocationKind)
-    return Kind - FirstLiteralRelocationKind;
   auto Specifier = SystemZMCExpr::Specifier(Target.getSpecifier());
   switch (Specifier) {
   case SystemZMCExpr::VK_INDNTPOFF: