[lld] [lld][LoongArch] Relax R_LARCH_PCALA_HI20 and R_LARCH_PCALA_LO12 (PR #112696)

[Fangrui Song via llvm-commits]

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@@ -159,6 +160,17 @@ static bool isJirl(uint32_t insn) {
   return (insn & 0xfc000000) == JIRL;
 }
 
+static bool isAddi_w(uint32_t insn) { return (insn & 0xffc00000) == ADDI_W; }
+
+static bool isAddi_d(uint32_t insn) { return (insn & 0xffc00000) == ADDI_D; }
+
+// LoongArch instructions could be divided into a number of kinds based on
+// the width of imm and the number of registers. get_rd/get_rj only applies
+// to those kinds of instructions that could do relocation.
+static uint8_t get_rd(uint32_t insn) { return insn & 0x1f; }
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MaskRay wrote:

`functionCase`

https://github.com/llvm/llvm-project/pull/112696