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Add all of the necessary classes to describe the contents of the MRegister.h implementation

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for a target.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7415 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-07-30 05:50:12 +00:00
parent b4d3f46ba2
commit 7c28952e7a
1 changed files with 40 additions and 1 deletions
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41
lib/Target/Target.td
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@ -5,9 +5,14 @@
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
//
// Value types - These values correspond to the register types defined in the
// ValueTypes.h file.
class ValueType { string Namespace = "MVT"; }
def i1 : ValueType; // One bit boolean value
def i8 : ValueType; // 8-bit integer value
def i16 : ValueType; // 16-bit integer value
@ -19,11 +24,45 @@ def f64 : ValueType; // 64-bit floating point value
def f80 : ValueType; // 80-bit floating point value
def f128 : ValueType; // 128-bit floating point value
//===----------------------------------------------------------------------===//
// Register file description - These classes are used to fill in the target
// description classes in llvm/Target/MRegisterInfo.h
// Register - You should define one instance of this class for each register in
// the target machine.
//
class Register {
string Namespace = "";
ValueType RegType;
}
// RegisterAliases - You should define instances of this class to indicate which
// registers in the register file are aliased together. This allows the code
// generator to be careful not to put two values with overlapping live ranges
// into registers which alias.
//
class RegisterAliases<Register reg, list<Register> aliases> {
Register Reg = reg;
list<Register> Aliases = aliases;
}
// RegisterClass - Now that all of the registers are defined, and aliases
// between registers are defined, specify which registers belong to which
// register classes. This also defines the default allocation order of
// registers by register allocators.
//
class RegisterClass<ValueType regType, int alignment, list<Register> regList> {
ValueType RegType = regType;
int Alignment = alignment;
list<Register> MemberList = regList;
}
//===----------------------------------------------------------------------===//
// Instruction set description -
//
class Instruction {
string Name; // The opcode string for this instruction
string Namespace = "";