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About "define_expand" having names which are not standard pattern names.
- From: mike at csdn dot sign dot idv dot tw
- To: gcc at gcc dot gnu dot org
- Date: Tue, 25 May 2004 05:32:23 +0800
- Subject: About "define_expand" having names which are not standard pattern names.
Hello,
After I have read the i386.md file of gcc, I got confused.
(define_expand "sse2_loadsd"
[(match_operand:V2DF 0 "register_operand" "")
(match_operand:DF 1 "memory_operand" "")]
"TARGET_SSE2"
{
emit_insn (gen_sse2_loadsd_1 (operands[0], operands[1],
CONST0_RTX (V2DFmode)));
DONE;
})
I know that "define_expand" is used to expand the standard pattern
name into multiple RTL, but the name "sse2_loadsd" is not a standard
pattern name. What does this kind of "define_expand" mean?
Thanks.
Mike Wu