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RJIT: Implement toregexp

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This commit is contained in:
Takashi Kokubun 2023-03-18 21:37:16 -07:00
parent d189f8d870
commit 9c2792c3d3
4 changed files with 60 additions and 2 deletions
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46
lib/ruby_vm/rjit/insn_compiler.rb
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@ -18,7 +18,7 @@ module RubyVM::RJIT
asm.incr_counter(:rjit_insns_count)
asm.comment("Insn: #{insn.name}")
# 80/102
# 81/102
case insn.name
when :nop then nop(jit, ctx, asm)
when :getlocal then getlocal(jit, ctx, asm)
@ -784,7 +784,49 @@ module RubyVM::RJIT
KeepCompiling
end
# toregexp
# @param jit [RubyVM::RJIT::JITState]
# @param ctx [RubyVM::RJIT::Context]
# @param asm [RubyVM::RJIT::Assembler]
def toregexp(jit, ctx, asm)
opt = jit.operand(0, signed: true)
cnt = jit.operand(1)
# Save the PC and SP because this allocates an object and could
# raise an exception.
jit_prepare_routine_call(jit, ctx, asm)
asm.lea(:rax, ctx.sp_opnd(-C.VALUE.size * cnt)) # values_ptr
ctx.stack_pop(cnt)
asm.mov(C_ARGS[0], 0)
asm.mov(C_ARGS[1], cnt)
asm.mov(C_ARGS[2], :rax) # values_ptr
asm.call(C.rb_ary_tmp_new_from_values)
# Save the array so we can clear it later
asm.push(C_RET)
asm.push(C_RET) # Alignment
asm.mov(C_ARGS[0], ary)
asm.mov(C_ARGS[1], opt)
asm.call(C.rb_reg_new_ary)
# The actual regex is in RAX now. Pop the temp array from
# rb_ary_tmp_new_from_values into C arg regs so we can clear it
asm.pop(:rcx) # Alignment
asm.pop(:rcx) # ary
# The value we want to push on the stack is in RAX right now
stack_ret = ctx.stack_push
asm.mov(stack_ret, C_RET)
# Clear the temp array.
asm.mov(C_ARGS[0], :rcx) # ary
asm.call(C.rb_ary_clear)
KeepCompiling
end
# intern
# @param jit [RubyVM::RJIT::JITState]