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MJIT: Refactor BitField dereference a little

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This commit is contained in:
Takashi Kokubun 2022-11-15 21:59:38 -08:00
parent e7443dbbca
commit cd2da09410
1 changed files with 1 additions and 2 deletions
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3
lib/mjit/c_pointer.rb
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@ -282,12 +282,11 @@ module RubyVM::MJIT
# Dereference # Dereference
def * def *
byte = Fiddle::Pointer.new(@addr)[0, Fiddle::SIZEOF_CHAR].unpack('c').first
if @width == 1 if @width == 1
byte = Fiddle::Pointer.new(@addr)[0, Fiddle::SIZEOF_CHAR].unpack('c').first
bit = (1 & (byte >> @offset)) bit = (1 & (byte >> @offset))
bit == 1 bit == 1
elsif @width <= 8 && @offset == 0 elsif @width <= 8 && @offset == 0
byte = Fiddle::Pointer.new(@addr)[0, Fiddle::SIZEOF_CHAR].unpack('c').first
bitmask = @width.times.map { |i| 1 << i }.sum bitmask = @width.times.map { |i| 1 << i }.sum
byte & bitmask byte & bitmask
else else