[llvm-branch-commits] [lld] [lld][LoongArch] Relax call36/tail36: R_LARCH_CALL36 (PR #123576)

[Fangrui Song via llvm-branch-commits]

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@@ -830,6 +832,37 @@ static void relaxPCHi20Lo12(Ctx &ctx, const InputSection &sec, size_t i,
   remove = 4;
 }
 
+// Relax code sequence.
+// From:
+//   pcaddu18i $ra, %call36(foo)
+//   jirl $ra, $ra, 0
+// To:
+//   b/bl foo
+static void relaxCall36(Ctx &ctx, const InputSection &sec, size_t i,
+                        uint64_t loc, Relocation &r, uint32_t &remove) {
+  const uint64_t symLocal =
+      (r.expr == R_PLT_PC ? r.sym->getPltVA(ctx) : r.sym->getVA(ctx)) +
+      r.addend;
+
+  const int64_t distance = symLocal - loc;
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MaskRay wrote:

and this `displace`

https://github.com/llvm/llvm-project/pull/123576