From 56ed8a2877a54fbd76195ab7f8fd0d6aa416730c Mon Sep 17 00:00:00 2001
From: Rot127 <unisono@quyllur.org>
Date: Sat, 5 Oct 2024 05:01:04 -0500
Subject: [PATCH] Fix Xtensa reachable assert.

The immediate given to decodeImm8_sh8Operand has been already shifted.
Checking if it is an 8bit value fails therefore.
---
 llvm/lib/Target/Xtensa/Disassembler/XtensaDisassembler.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/llvm/lib/Target/Xtensa/Disassembler/XtensaDisassembler.cpp b/llvm/lib/Target/Xtensa/Disassembler/XtensaDisassembler.cpp
index 2d36b94dd40c..18a3fdfbb47d 100644
--- a/llvm/lib/Target/Xtensa/Disassembler/XtensaDisassembler.cpp
+++ b/llvm/lib/Target/Xtensa/Disassembler/XtensaDisassembler.cpp
@@ -157,8 +157,8 @@ static DecodeStatus decodeImm8Operand(MCInst &Inst, uint64_t Imm,
 static DecodeStatus decodeImm8_sh8Operand(MCInst &Inst, uint64_t Imm,
                                           int64_t Address,
                                           const void *Decoder) {
-  assert(isUInt<8>(Imm) && "Invalid immediate");
-  Inst.addOperand(MCOperand::createImm(SignExtend64<16>(Imm << 8)));
+  assert(isUInt<16>(Imm) && "Invalid immediate");
+  Inst.addOperand(MCOperand::createImm(SignExtend64<16>(Imm)));
   return MCDisassembler::Success;
 }