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Remove the RegisterInfo class in favor of a general Target class. Add instrinfo stuff

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7521 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-08-03 18:18:31 +00:00
parent 13c5b4cdc8
commit a5100d91ef
1 changed files with 33 additions and 22 deletions
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55
lib/Target/Target.td
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@ -75,30 +75,10 @@ class RegisterClass<ValueType regType, int alignment, list<Register> regList> {
code Methods = [{}];
}
// RegisterInfo - This class should only be instantiated once to provide
// parameters which are global to the the target machine, such as callee safed
// registers.
//
class RegisterInfo {
// ClassName - Specify the name of the class that should be generated by the
// register info emitter. This class may be further subclasses by custom
// target code to implement virtual methods as necessary. Targets must
// specify a value for this.
//
string ClassName;
// CalleeSavedRegisters - As you might guess, this is a list of the callee
// saved registers for a target.
list<Register> CalleeSavedRegisters = [];
// PointerType - Specify the value type to be used to represent pointers in
// this target. Typically this is an i32 or i64 type.
ValueType PointerType;
}
//===----------------------------------------------------------------------===//
// Instruction set description -
// Instruction set description - These classes correspond to the C++ classes in
// the Target/TargetInstrInfo.h file.
//
class Instruction {
@ -115,4 +95,35 @@ class Instruction {
bit isCall = 0; // Is this instruction a call instruction?
bit isTwoAddress = 0; // Is this a two address instruction?
bit isTerminator = 0; // Is this part of the terminator for a basic block?
// If the target wants to associate some target-specific information with each
// instruction, it should provide these two lists to indicate how to assemble
// the target specific information into the 32 bits available.
list<string> TargetInfoFields = [];
list<int> TargetInfoPositions = [];
}
// InstrInfo - This class should only be instantiated once to provide parameters
// which are global to the the target machine.
//
class InstrInfo {
Instruction PHIInst;
Instruction NOOPInst;
}
//===----------------------------------------------------------------------===//
// Target - This class contains the "global" target information
//
class Target {
// CalleeSavedRegisters - As you might guess, this is a list of the callee
// saved registers for a target.
list<Register> CalleeSavedRegisters = [];
// PointerType - Specify the value type to be used to represent pointers in
// this target. Typically this is an i32 or i64 type.
ValueType PointerType;
// InstructionSet - Instruction set description for this target
InstrInfo InstructionSet;
}