diff options
| -rw-r--r-- | lib/Target/Target.td | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/lib/Target/Target.td b/lib/Target/Target.td index d230776a31..e63cd635cc 100644 --- a/lib/Target/Target.td +++ b/lib/Target/Target.td @@ -10,7 +10,7 @@ // // 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 @@ -53,9 +53,27 @@ class RegisterAliases<Register reg, list<Register> aliases> { // registers by register allocators. // class RegisterClass<ValueType regType, int alignment, list<Register> regList> { + // RegType - Specify the ValueType of the registers in this register class. + // Note that all registers in a register class must have the same ValueType. + // ValueType RegType = regType; + + // Alignment - Specify the alignment required of the registers when they are + // stored or loaded to memory. + // int Alignment = alignment; + + // MemberList - Specify which registers are in this class. If the + // allocation_order_* method are not specified, this also defines the order of + // allocation used by the register allocator. + // list<Register> MemberList = regList; + + // allocation_order_* - These methods define the order that the registers + // should be allocated. See the MRegister.h file for more information. + // + code allocation_order_begin; + code allocation_order_end; } |