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[CHANGED] only generate required labels in if-else

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sjs 2009-05-16 15:40:43 -07:00
parent 0431cd60f3
commit e547804711
1 changed files with 2 additions and 3 deletions
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5
compiler.rb
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@ -162,16 +162,15 @@ class Compiler
match('i') match('i')
condition condition
else_label = unique_label(:else) else_label = unique_label(:else)
end_label = unique_label(:end) end_label = else_label # only generated if else clause present
x86_jz(else_label) x86_jz(else_label)
block block
if @look == 'l' if @look == 'l'
match('l') match('l')
end_label = unique_label(:end) # now we need the 2nd label
x86_jmp(end_label) x86_jmp(end_label)
emit_label(else_label) emit_label(else_label)
block block
else
emit_label(else_label) # we end up with an extra label, oh well
end end
match('e') match('e')
emit_label(end_label) emit_label(end_label)