ARM/MC/ELF TPsoft is now a proper pseudo inst.
Added test to check bl __aeabi_read_tp gets emitted properly for ELF/ASM
as well as ELF/OBJ (including fixup)

Also added support for ELF::R_ARM_TLS_IE32



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121312 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMExpandPseudoInsts.cpp b/lib/Target/ARM/ARMExpandPseudoInsts.cpp
index ca7a90a..d3b00a4 100644
--- a/lib/Target/ARM/ARMExpandPseudoInsts.cpp
+++ b/lib/Target/ARM/ARMExpandPseudoInsts.cpp
@@ -699,6 +699,21 @@
       MI.eraseFromParent();
       break;
     }
+    case ARM::TPsoft: {
+      unsigned PredReg = 0;
+      ARMCC::CondCodes Pred = llvm::getInstrPredicate(&MI, PredReg);
+      MachineInstrBuilder MIB = 
+        BuildMI(MBB, MBBI, MI.getDebugLoc(),
+                TII->get(ARM::BL))
+        .addExternalSymbol("__aeabi_read_tp", 0);
+
+      (*MIB).setMemRefs(MI.memoperands_begin(), MI.memoperands_end());
+      TransferImpOps(MI, MIB, MIB);
+      MI.eraseFromParent();
+       
+      //assert(0 && "HELP!");
+    }; break;
+
     case ARM::t2LDRHpci:
     case ARM::t2LDRBpci:
     case ARM::t2LDRSHpci: