diff options
Diffstat (limited to 'include/llvm/Target/Target.td')
| -rw-r--r-- | include/llvm/Target/Target.td | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/llvm/Target/Target.td b/include/llvm/Target/Target.td index 5ae4866f5e..ab6a4e2cdb 100644 --- a/include/llvm/Target/Target.td +++ b/include/llvm/Target/Target.td @@ -128,6 +128,11 @@ class RegisterClass<string namespace, list<ValueType> regTypes, int alignment, // dags: (RegClass SubRegIndex, SubRegindex, ...) list<dag> SubRegClasses = []; + // isAllocatable - Specify that the register class can be used for virtual + // registers and register allocation. Some register classes are only used to + // model instruction operand constraints, and should have isAllocatable = 0. + bit isAllocatable = 1; + // MethodProtos/MethodBodies - These members can be used to insert arbitrary // code into a generated register class. The normal usage of this is to // overload virtual methods. |