(gcc.info) Insn Attributes

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(gcc.info) Insn Splitting

(gcc.info) Machine Desc

 
 Instruction Attributes
 ======================
 
    In addition to describing the instruction supported by the target
 machine, the `md' file also defines a group of "attributes" and a set of
 values for each.  Every generated insn is assigned a value for each
 attribute.  One possible attribute would be the effect that the insn
 has on the machine's condition code.  This attribute can then be used
 by `NOTICE_UPDATE_CC' to track the condition codes.
 

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* Defining Attributes Specifying attributes and their values.
* Expressions         Valid expressions for attribute values.
* Tagging Insns       Assigning attribute values to insns.
* Attr Example        An example of assigning attributes.
* Insn Lengths        Computing the length of insns.
* Constant Attributes Defining attributes that are constant.
* Delay Slots         Defining delay slots required for a machine.
* Function Units      Specifying information for insn scheduling.
 

Info Catalog

(gcc.info) Insn Splitting

(gcc.info) Machine Desc