Convert miasm IR to llvm IR: AttributeError: 'LLVMContext_IRCompilation' object has no attribute 'vmcpu'

[fishfacegit]

Hi,

i try to convert miasm ir to llvm ir for further optimization.
Is there an easy way to implement missing operators such as FLAG_EQ_CMP?

Best Regards

context = LLVMContext_IRCompilation()
context.ir_arch = ir_arch
context.lifter = machine.lifter(loc_db)
func = LLVMFunction_IRCompilation(context, name="test")
func.ret_type = llvm_ir.VoidType()
func.init_fc()
func.from_ircfg(ircfg, append_ret=False)

NotImplementedError                       Traceback (most recent call last)
Cell In[13], line 12
      9 func.init_fc()
     11 # IRCFG is imported, without the final "ret void"
---> 12 func.from_ircfg(ircfg, append_ret=False)
     14 # Finish the function
     15 func.builder.ret_void()

File [~/miniconda3/envs/miasm/lib/python3.12/site-packages/miasm/jitter/llvmconvert.py:1922](https://file+.vscode-resource.vscode-cdn.net/media/hadrian/int1TB/workspace/MasterArbeit/miasm/~/miniconda3/envs/miasm/lib/python3.12/site-packages/miasm/jitter/llvmconvert.py:1922), in LLVMFunction_IRCompilation.from_ircfg(self, ircfg, append_ret)
   1920 for label, irblock in viewitems(ircfg.blocks):
   1921     self.builder.position_at_end(self.get_basic_block_by_loc_key(label))
-> 1922     self.gen_irblock(irblock)
   1924 # Branch the entry BBL on the IRCFG head
   1925 self.builder.position_at_end(self.entry_bbl)

File [~/miniconda3/envs/miasm/lib/python3.12/site-packages/miasm/jitter/llvmconvert.py:1910](https://file+.vscode-resource.vscode-cdn.net/media/hadrian/int1TB/workspace/MasterArbeit/miasm/~/miniconda3/envs/miasm/lib/python3.12/site-packages/miasm/jitter/llvmconvert.py:1910), in LLVMFunction_IRCompilation.gen_irblock(self, irblock)
   1908 attributes = [Attributes() for _ in range(len(irblock.assignblks))]
   1909 instr_offsets = None
-> 1910 return super(LLVMFunction_IRCompilation, self).gen_irblock(
   1911     instr_attrib, attributes, instr_offsets, irblock
   1912 )

File [~/miniconda3/envs/miasm/lib/python3.12/site-packages/miasm/jitter/llvmconvert.py:1569](https://file+.vscode-resource.vscode-cdn.net/media/hadrian/int1TB/workspace/MasterArbeit/miasm/~/miniconda3/envs/miasm/lib/python3.12/site-packages/miasm/jitter/llvmconvert.py:1569), in LLVMFunction.gen_irblock(self, instr_attrib, attributes, instr_offsets, irblock)
   1567         case2dst, case_value = self.expr2cases(src)
...
-> 1203     raise NotImplementedError('Unknown op: %s' % op)
   1205 last = self.add_ir(expr.args[0])
   1207 for i in range(1, len(expr.args)):

NotImplementedError: Unknown op: FLAG_EQ_CMP

[fishfacegit]

Solved via:

expr_simp.enable_passes(ExpressionSimplifier.PASS_HIGH_TO_EXPLICIT)
ircfg.simplify(expr_simp)

[fishfacegit]

How to resolve this vmcpu?

AttributeError                            Traceback (most recent call last)
Cell In[36], line 9
      6 func.init_fc()
      8 # IRCFG is imported, without the final "ret void"
----> 9 func.from_ircfg(ircfg, append_ret=False)
     11 # Finish the function
     12 func.builder.ret_void()

File [~/miniconda3/envs/miasm/lib/python3.12/site-packages/miasm/jitter/llvmconvert.py:1922](https://file+.vscode-resource.vscode-cdn.net/media/hadrian/int1TB/workspace/MasterArbeit/miasm/~/miniconda3/envs/miasm/lib/python3.12/site-packages/miasm/jitter/llvmconvert.py:1922), in LLVMFunction_IRCompilation.from_ircfg(self, ircfg, append_ret)
   1920 for label, irblock in viewitems(ircfg.blocks):
   1921     self.builder.position_at_end(self.get_basic_block_by_loc_key(label))
-> 1922     self.gen_irblock(irblock)
   1924 # Branch the entry BBL on the IRCFG head
   1925 self.builder.position_at_end(self.entry_bbl)

File [~/miniconda3/envs/miasm/lib/python3.12/site-packages/miasm/jitter/llvmconvert.py:1910](https://file+.vscode-resource.vscode-cdn.net/media/hadrian/int1TB/workspace/MasterArbeit/miasm/~/miniconda3/envs/miasm/lib/python3.12/site-packages/miasm/jitter/llvmconvert.py:1910), in LLVMFunction_IRCompilation.gen_irblock(self, irblock)
   1908 attributes = [Attributes() for _ in range(len(irblock.assignblks))]
   1909 instr_offsets = None
-> 1910 return super(LLVMFunction_IRCompilation, self).gen_irblock(
   1911     instr_attrib, attributes, instr_offsets, irblock
   1912 )

File [~/miniconda3/envs/miasm/lib/python3.12/site-packages/miasm/jitter/llvmconvert.py:1569](https://file+.vscode-resource.vscode-cdn.net/media/hadrian/int1TB/workspace/MasterArbeit/miasm/~/miniconda3/envs/miasm/lib/python3.12/site-packages/miasm/jitter/llvmconvert.py:1569), in LLVMFunction.gen_irblock(self, instr_attrib, attributes, instr_offsets, irblock)
   1567         case2dst, case_value = self.expr2cases(src)
...
   (...)
    612     ]
    613 )

AttributeError: 'LLVMContext_IRCompilation' object has no attribute 'vmcpu'