[llvm] [RISCV] Add late optimization pass for riscv (PR #133256)

[Mikhail R. Gadelha via llvm-commits]

================
@@ -307,6 +307,13 @@ class RISCVInstrInfo : public RISCVGenInstrInfo {
   static bool isLdStSafeToPair(const MachineInstr &LdSt,
                                const TargetRegisterInfo *TRI);
 
+  static bool evaluateCondBranch(unsigned CC, int64_t C0, int64_t C1);
+
+  static bool isLoadImm(const MachineInstr *MI, int64_t &Imm);
----------------
mikhailramalho wrote:

yeah... `optimizeCondBranch` uses `isLoadImm` directly

https://github.com/llvm/llvm-project/pull/133256