[MC] Rename TLSCALL as it's not ARM specific.

`MCSymbolRefExpr` variant kind for TLSCALL is prefixed with 
_ARM_ since this is how it was originally implemented.
The X86_64 version is exactly the same so there's no reason
to create a new variant, we can just rename the existing
one to be machine-independent.
This generalization is the first step to implement support
for GNU2 TLS dialect in MC.

Differential Revision:  http://reviews.llvm.org/D18160

llvm-svn: 263515

llvm/include/llvm/MC/MCExpr.h

@@ -177,6 +177,7 @@ class MCSymbolRefExpr : public MCExpr {
     VK_TLSLDM,
     VK_TPOFF,
     VK_DTPOFF,
+    VK_TLSCALL,   // symbol(tlscall)
     VK_TLVP,      // Mach-O thread local variable relocations
     VK_TLVPPAGE,
     VK_TLVPPAGEOFF,
@@ -195,7 +196,6 @@ class MCSymbolRefExpr : public MCExpr {
     VK_ARM_PREL31,
     VK_ARM_SBREL,          // symbol(sbrel)
     VK_ARM_TLSLDO,         // symbol(tlsldo)
-    VK_ARM_TLSCALL,        // symbol(tlscall)
     VK_ARM_TLSDESC,        // symbol(tlsdesc)
     VK_ARM_TLSDESCSEQ,
 

llvm/lib/MC/MCExpr.cpp

@@ -194,6 +194,7 @@ StringRef MCSymbolRefExpr::getVariantKindName(VariantKind Kind) {
   case VK_TLSLDM: return "TLSLDM";
   case VK_TPOFF: return "TPOFF";
   case VK_TPREL: return "TPREL";
+  case VK_TLSCALL: return "tlscall";
   case VK_TLVP: return "TLVP";
   case VK_TLVPPAGE: return "TLVPPAGE";
   case VK_TLVPPAGEOFF: return "TLVPPAGEOFF";
@@ -211,7 +212,6 @@ StringRef MCSymbolRefExpr::getVariantKindName(VariantKind Kind) {
   case VK_ARM_PREL31: return "prel31";
   case VK_ARM_SBREL: return "sbrel";
   case VK_ARM_TLSLDO: return "tlsldo";
-  case VK_ARM_TLSCALL: return "tlscall";
   case VK_ARM_TLSDESC: return "tlsdesc";
   case VK_ARM_TLSDESCSEQ: return "tlsdescseq";
   case VK_PPC_LO: return "l";
@@ -320,6 +320,7 @@ MCSymbolRefExpr::getVariantKindForName(StringRef Name) {
     .Case("ntpoff", VK_NTPOFF)
     .Case("gotntpoff", VK_GOTNTPOFF)
     .Case("plt", VK_PLT)
+    .Case("tlscall", VK_TLSCALL)
     .Case("tlsgd", VK_TLSGD)
     .Case("tlsld", VK_TLSLD)
     .Case("tlsldm", VK_TLSLDM)
@@ -397,7 +398,6 @@ MCSymbolRefExpr::getVariantKindForName(StringRef Name) {
     .Case("prel31", VK_ARM_PREL31)
     .Case("sbrel", VK_ARM_SBREL)
     .Case("tlsldo", VK_ARM_TLSLDO)
-    .Case("tlscall", VK_ARM_TLSCALL)
     .Case("tlsdesc", VK_ARM_TLSDESC)
     .Default(VK_Invalid);
 }

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

@@ -458,7 +458,7 @@ unsigned ARMAsmBackend::adjustFixupValue(const MCFixup &Fixup, uint64_t Value,
     // Offset by 8 just as above.
     if (const MCSymbolRefExpr *SRE =
             dyn_cast<MCSymbolRefExpr>(Fixup.getValue()))
-      if (SRE->getKind() == MCSymbolRefExpr::VK_ARM_TLSCALL)
+      if (SRE->getKind() == MCSymbolRefExpr::VK_TLSCALL)
         return 0;
     return 0xffffff & ((Value - 8) >> 2);
   case ARM::fixup_t2_uncondbranch: {
@@ -536,7 +536,7 @@ unsigned ARMAsmBackend::adjustFixupValue(const MCFixup &Fixup, uint64_t Value,
     uint32_t offset = (Value - 2) >> 2;
     if (const MCSymbolRefExpr *SRE =
             dyn_cast<MCSymbolRefExpr>(Fixup.getValue()))
-      if (SRE->getKind() == MCSymbolRefExpr::VK_ARM_TLSCALL)
+      if (SRE->getKind() == MCSymbolRefExpr::VK_TLSCALL)
         offset = 0;
     uint32_t signBit = (offset & 0x400000) >> 22;
     uint32_t I1Bit = (offset & 0x200000) >> 21;

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

@@ -109,7 +109,7 @@ unsigned ARMELFObjectWriter::GetRelocTypeInner(const MCValue &Target,
       case MCSymbolRefExpr::VK_PLT:
         Type = ELF::R_ARM_CALL;
         break;
-      case MCSymbolRefExpr::VK_ARM_TLSCALL:
+      case MCSymbolRefExpr::VK_TLSCALL:
         Type = ELF::R_ARM_TLS_CALL;
         break;
       default:
@@ -141,7 +141,7 @@ unsigned ARMELFObjectWriter::GetRelocTypeInner(const MCValue &Target,
     case ARM::fixup_arm_thumb_bl:
     case ARM::fixup_arm_thumb_blx:
       switch (Modifier) {
-      case MCSymbolRefExpr::VK_ARM_TLSCALL:
+      case MCSymbolRefExpr::VK_TLSCALL:
         Type = ELF::R_ARM_THM_TLS_CALL;
         break;
       default:
@@ -213,7 +213,7 @@ unsigned ARMELFObjectWriter::GetRelocTypeInner(const MCValue &Target,
       case MCSymbolRefExpr::VK_ARM_TLSLDO:
         Type = ELF::R_ARM_TLS_LDO32;
         break;
-      case MCSymbolRefExpr::VK_ARM_TLSCALL:
+      case MCSymbolRefExpr::VK_TLSCALL:
         Type = ELF::R_ARM_TLS_CALL;
         break;
       case MCSymbolRefExpr::VK_ARM_TLSDESC: