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| author | Takashi Kokubun <takashikkbn@gmail.com> | 2023-03-19 13:41:04 -0700 |
|---|---|---|
| committer | Takashi Kokubun <takashikkbn@gmail.com> | 2023-03-19 13:41:04 -0700 |
| commit | 95c4ced39eb0d25925724456b222a56206b633db (patch) | |
| tree | 6fae0c5498bfa99102b1b674ff92510a18e1c712 | |
| parent | cd5a8d01605e2235fe6deaa4f60c212ffaeb4d04 (diff) | |
RJIT: Optimize Array#empty?
| -rw-r--r-- | lib/ruby_vm/rjit/insn_compiler.rb | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/lib/ruby_vm/rjit/insn_compiler.rb b/lib/ruby_vm/rjit/insn_compiler.rb index 62b4f5c58f..58028d51ab 100644 --- a/lib/ruby_vm/rjit/insn_compiler.rb +++ b/lib/ruby_vm/rjit/insn_compiler.rb @@ -2908,6 +2908,25 @@ module RubyVM::RJIT # @param jit [RubyVM::RJIT::JITState] # @param ctx [RubyVM::RJIT::Context] # @param asm [RubyVM::RJIT::Assembler] + def jit_rb_ary_empty_p(jit, ctx, asm, argc, _known_recv_class) + array_reg = :rax + asm.mov(array_reg, ctx.stack_pop(1)) + len_opnd = jit_array_len(asm, array_reg, :rcx) + + asm.test(:rcx, :rcx) + asm.mov(:rax, Qfalse) + asm.mov(:rcx, Qtrue) + asm.cmovz(:rax, :rcx) + + out_opnd = ctx.stack_push + asm.mov(out_opnd, :rax) + + return true + end + + # @param jit [RubyVM::RJIT::JITState] + # @param ctx [RubyVM::RJIT::Context] + # @param asm [RubyVM::RJIT::Assembler] def jit_rb_ary_push(jit, ctx, asm, argc, _known_recv_class) return false if argc != 1 asm.comment('rb_ary_push') @@ -2978,7 +2997,7 @@ module RubyVM::RJIT register_cfunc_method(String, :+@, :jit_rb_str_uplus) # rb_ary_empty_p() method in array.c - #register_cfunc_method(Array, :empty?, :jit_rb_ary_empty_p) + register_cfunc_method(Array, :empty?, :jit_rb_ary_empty_p) #register_cfunc_method(Kernel, :respond_to?, :jit_obj_respond_to) #register_cfunc_method(Kernel, :block_given?, :jit_rb_f_block_given_p) |