Class: LLVM::Phi

Inherits:

Instruction

• Object
• Value
• User
• Instruction
• LLVM::Phi

Defined in:

lib/llvm/core/value.rb

Instance Method Summary

• #add_incoming(incoming) ⇒ Object

  Add incoming branches to a phi node by passing an alternating list of resulting values and BasicBlocks.

Methods inherited from Instruction

#next, #parent, #previous

Methods inherited from User

#operands

Methods inherited from Value

#==, #add_attribute, #constant?, #dump, #eql?, from_ptr, #hash, #name, #name=, #null?, to_ptr, #to_ptr, type, #type, #undefined?

Instance Method Details

#add_incoming(incoming) ⇒ Object

Add incoming branches to a phi node by passing an alternating list of resulting values and BasicBlocks. e.g.

phi.add_incoming(val1, block1, val2, block2, ...)

# File 'lib/llvm/core/value.rb', line 757

def add_incoming(incoming)
  blks = incoming.keys
  vals = incoming.values_at(*blks)
  size = incoming.size

  FFI::MemoryPointer.new(FFI.type_size(:pointer) * size) do |vals_ptr|
    vals_ptr.write_array_of_pointer(vals)
    FFI::MemoryPointer.new(FFI.type_size(:pointer) * size) do |blks_ptr|
      blks_ptr.write_array_of_pointer(blks)
      C.LLVMAddIncoming(self, vals_ptr, blks_ptr, vals.size)
    end
  end

  nil
end