[clang] [llvm] [RISCV] Add Qualcomm uC Xqcilia (Large Immediate Arithmetic) extension (PR #124706)

[Craig Topper via llvm-commits]

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@@ -1046,6 +1046,20 @@ struct RISCVOperand final : public MCParsedAsmOperand {
            isInt<26>(fixImmediateForRV32(Imm, isRV64Imm()));
   }
 
+  bool isImm32() const {
+    int64_t Imm;
+    RISCVMCExpr::VariantKind VK = RISCVMCExpr::VK_RISCV_None;
+    if (!isImm())
+      return false;
+    bool IsConstantImm = evaluateConstantImm(getImm(), Imm, VK);
+    bool IsValid;
+    if (!IsConstantImm)
+      IsValid = RISCVAsmParser::classifySymbolRef(getImm(), VK);
+    else
+      IsValid = isInt<32>(Imm) || isUInt<32>(Imm);
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topperc wrote:

Is this equivalent to `isInt<32>(fixImmediateForRV32(Imm, isRV64Imm()))` like we do for other immediates?

https://github.com/llvm/llvm-project/pull/124706