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Implement opt_minus

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This commit is contained in:
Takashi Kokubun 2023-01-07 14:06:38 -08:00
parent ee6d627b43
commit 9ef04f5636
4 changed files with 81 additions and 6 deletions
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53
lib/ruby_vm/mjit/insn_compiler.rb
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@ -17,7 +17,7 @@ module RubyVM::MJIT
asm.incr_counter(:mjit_insns_count)
asm.comment("Insn: #{insn.name}")
# 9/101
# 10/101
case insn.name
# nop
# getlocal
@ -88,7 +88,7 @@ module RubyVM::MJIT
# once
# opt_case_dispatch
# opt_plus
# opt_minus
when :opt_minus then opt_minus(jit, ctx, asm)
# opt_mult
# opt_div
# opt_mod
@ -316,7 +316,50 @@ module RubyVM::MJIT
# once
# opt_case_dispatch
# opt_plus
# opt_minus
# @param jit [RubyVM::MJIT::JITState]
# @param ctx [RubyVM::MJIT::Context]
# @param asm [RubyVM::MJIT::Assembler]
def opt_minus(jit, ctx, asm)
unless jit.at_current_insn?
defer_compilation(jit, ctx, asm)
return EndBlock
end
comptime_recv = jit.peek_at_stack(1)
comptime_obj = jit.peek_at_stack(0)
if fixnum?(comptime_recv) && fixnum?(comptime_obj)
unless @invariants.assume_bop_not_redefined(jit, C.INTEGER_REDEFINED_OP_FLAG, C.BOP_MINUS)
return CantCompile
end
raise 'sp_offset != stack_size' if ctx.sp_offset != ctx.stack_size # TODO: handle this
recv_index = ctx.stack_size - 2
obj_index = ctx.stack_size - 1
asm.comment('guard recv is fixnum') # TODO: skip this with type information
asm.test([SP, C.VALUE.size * recv_index], C.RUBY_FIXNUM_FLAG)
asm.jz(side_exit(jit, ctx))
asm.comment('guard obj is fixnum') # TODO: skip this with type information
asm.test([SP, C.VALUE.size * obj_index], C.RUBY_FIXNUM_FLAG)
asm.jz(side_exit(jit, ctx))
asm.mov(:rax, [SP, C.VALUE.size * recv_index])
asm.mov(:rcx, [SP, C.VALUE.size * obj_index])
asm.sub(:rax, :rcx)
asm.jo(side_exit(jit, ctx))
asm.add(:rax, 1)
asm.mov([SP, C.VALUE.size * recv_index], :rax)
ctx.stack_pop(1)
KeepCompiling
else
CantCompile # TODO: delegate to send
end
end
# opt_mult
# opt_div
# opt_mod
@ -346,11 +389,11 @@ module RubyVM::MJIT
asm.comment('guard recv is fixnum') # TODO: skip this with type information
asm.test([SP, C.VALUE.size * recv_index], C.RUBY_FIXNUM_FLAG)
asm.je(side_exit(jit, ctx))
asm.jz(side_exit(jit, ctx))
asm.comment('guard obj is fixnum') # TODO: skip this with type information
asm.test([SP, C.VALUE.size * obj_index], C.RUBY_FIXNUM_FLAG)
asm.je(side_exit(jit, ctx))
asm.jz(side_exit(jit, ctx))
asm.mov(:rax, [SP, C.VALUE.size * obj_index])
asm.cmp([SP, C.VALUE.size * recv_index], :rax)