================
@@ -96,6 +96,21 @@ def simm32 : RISCVOp<XLenVT> {
}];
}
+// A 32-bit signed immediate where the least significant bit is zero.
+def simm32_lsb0 : Operand<OtherVT> {
+ let ParserMatchClass = SImmAsmOperand<32, "Lsb0">;
+ let PrintMethod = "printBranchOperand";
+ let EncoderMethod = "getImmOpValueAsr1";
+ let DecoderMethod = "decodeSImmOperandAndLsl1<32>";
+ let MCOperandPredicate = [{
+ int64_t Imm;
+ if (!MCOp.evaluateAsConstantImm(Imm))
+ return false;
+ return isShiftedInt<31, 1>(Imm);
----------------
lenary wrote:
Well that's a fun assembler difference I didn't know about :(
We've found it useful to write them for testing our assembler/disassembler, but
agree that most users will use the symbol versions.
https://github.com/llvm/llvm-project/pull/131996
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