Revert "foo"

This reverts commit 4fde20b. I failed to squash this
llvm · Mar 27, 2023 · 39b64ad · 39b64ad
1 parent ca70cee
commit 39b64ad
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Showing 2 changed files with 5 additions and 4 deletions.
diff --git a/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp b/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
@@ -1505,7 +1505,7 @@ RISCVAsmParser::parseInsnDirectiveOpcode(OperandVector &Operands) {
     auto *CE = dyn_cast<MCConstantExpr>(Res);
     if (CE) {
       int64_t Imm = CE->getValue();
-      if (isUInt<7>(Imm)) {
+      if (isUInt<7>(Imm) && (Imm & 3) == 3) {
         Operands.push_back(RISCVOperand::createImm(Res, S, E, isRV64()));
         return MatchOperand_Success;
       }
@@ -1534,8 +1534,8 @@ RISCVAsmParser::parseInsnDirectiveOpcode(OperandVector &Operands) {
     break;
   }
 
-  Error(S, "opcode must be a valid opcode name or an immediate in the range "
-           "[0, 127]");
+  Error(S, "opcode must be in the range [0, 127] and the lower 2 bits must be "
+           "0x3");
   return MatchOperand_ParseFail;
 }
 

diff --git a/llvm/test/MC/RISCV/insn-invalid.s b/llvm/test/MC/RISCV/insn-invalid.s
@@ -14,7 +14,8 @@
 .insn q  0x13,  0,  a0, a1, 13, 14 # CHECK: :[[@LINE]]:7: error: invalid instruction format
 
 # Invalid immediate
-.insn i  0x99,  0, a0, 4(a1) # CHECK: :[[@LINE]]:10: error: opcode must be in the range [0, 127]
+.insn i  0x99,  0, a0, 4(a1) # CHECK: :[[@LINE]]:10: error: opcode must be in the range [0, 127] and the lower 2 bits must be 0x3
+.insn i  0,  0, a0, 4(a1) # CHECK: :[[@LINE]]:10: error: opcode must be in the range [0, 127] and the lower 2 bits must be 0x3
 .insn r  0x33,  8,  0, a0, a1, a2 # CHECK: :[[@LINE]]:17: error: immediate must be an integer in the range [0, 7]
 .insn r4 0x43,  0,  4, fa0, fa1, fa2, fa3 # CHECK: :[[@LINE]]:21: error: immediate must be an integer in the range [0, 3]