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

[via llvm-commits]

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@@ -1056,6 +1056,15 @@ struct RISCVOperand final : public MCParsedAsmOperand {
            isInt<26>(fixImmediateForRV32(Imm, isRV64Imm()));
   }
 
+  bool isSImm32() const {
+    int64_t Imm;
+    RISCVMCExpr::VariantKind VK = RISCVMCExpr::VK_RISCV_None;
+    if (!isImm())
+      return false;
+    bool IsConstantImm = evaluateConstantImm(getImm(), Imm, VK);
+    return IsConstantImm && isInt<32>(Imm) && VK == RISCVMCExpr::VK_RISCV_None;
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hchandel wrote:

I misunderstood previous comments regarding SImm32. Fixed it now. I have one question: This operand SImm32 also supports uimm32 constants, Is it ok to call it SImm (signed immediate)?

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