[clang] [llvm] [SystemZ] Global Stackprotector and associated location section (PR #169317)

[Dominik Steenken via cfe-commits]

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@@ -1026,6 +1036,70 @@ void SystemZAsmPrinter::LowerPATCHABLE_RET(const MachineInstr &MI,
   recordSled(BeginOfSled, MI, SledKind::FUNCTION_EXIT, 2);
 }
 
+void SystemZAsmPrinter::lowerLOAD_TLS_BLOCK_ADDR(const MachineInstr &MI,
+                                                 SystemZMCInstLower &Lower) {
+  Register AddrReg = MI.getOperand(0).getReg();
+  const MachineRegisterInfo &MRI = MI.getParent()->getParent()->getRegInfo();
+
+  // EAR can only load the low subregister so use a shift for %a0 to produce
+  // the GR containing %a0 and %a1.
+  const Register Reg32 =
+      MRI.getTargetRegisterInfo()->getSubReg(AddrReg, SystemZ::subreg_l32);
+
+  // ear <reg>, %a0
+  EmitToStreamer(*OutStreamer,
+                 MCInstBuilder(SystemZ::EAR).addReg(Reg32).addReg(SystemZ::A0));
+
+  // sllg <reg>, <reg>, 32
+  EmitToStreamer(*OutStreamer, MCInstBuilder(SystemZ::SLLG)
+                                   .addReg(AddrReg)
+                                   .addReg(AddrReg)
+                                   .addReg(0)
+                                   .addImm(32));
+
+  // ear <reg>, %a1
+  EmitToStreamer(*OutStreamer,
+                 MCInstBuilder(SystemZ::EAR).addReg(Reg32).addReg(SystemZ::A1));
+  return;
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dominik-steenken wrote:

removed

https://github.com/llvm/llvm-project/pull/169317