[llvm] [RISCV][MC] Correct the register state update for auipc (PR #130897)

[Craig Topper via llvm-commits]

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@@ -195,7 +195,7 @@ class RISCVMCInstrAnalysis : public MCInstrAnalysis {
     }
     case RISCV::AUIPC:
       setGPRState(Inst.getOperand(0).getReg(),
-                  Addr + (Inst.getOperand(1).getImm() << 12));
+                  Addr + ((int32_t)Inst.getOperand(1).getImm() << 12));
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topperc wrote:

Use `Addr + SignExtend64<32>(Inst.getOperand(1).getImm() << 12))`. It's more readable.

https://github.com/llvm/llvm-project/pull/130897