[llvm] [LoongArch] Ensure pcaddu18i and jirl adjacency in tail calls for correct relocation (PR #113932)

[via llvm-commits]

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@@ -763,6 +744,54 @@ bool LoongArchExpandPseudo::expandCopyCFR(
   return true;
 }
 
+bool LoongArchExpandPseudo::expandFunctionCALL(
+    MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
+    MachineBasicBlock::iterator &NextMBBI, bool IsTailCall) {
+  MachineFunction *MF = MBB.getParent();
+  MachineInstr &MI = *MBBI;
+  DebugLoc DL = MI.getDebugLoc();
+  const MachineOperand &Func = MI.getOperand(0);
+  MachineInstrBuilder CALL;
+  unsigned Opcode;
+
+  switch (MF->getTarget().getCodeModel()) {
+  default:
+    report_fatal_error("Unsupported code model");
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heiher wrote:

I agree with you that the unsupported code model is indeed blocked during call lowering. Using "unexpected" here is more appropriate.

https://github.com/llvm/llvm-project/pull/113932