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A TableGen backend can define how certain classes can be expanded into ordered sets of defs, typically by evaluating a specific field in the record. The SetTheory class can then evaluate DAG expressions that refer to these named sets. A number of standard set and list operations are predefined, and the backend can add more specialized operators if needed. The -print-sets backend is used by SetTheory.td to provide examples. This is intended to simplify how register classes are defined: def GR32_NOSP : RegisterClass<"X86", [i32], 32, (sub GR32, ESP)>; git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132621 91177308-0d34-0410-b5e6-96231b3b80d8 |
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.. | ||
2003-08-03-PassCode.td | ||
2006-09-18-LargeInt.td | ||
2010-03-24-PrematureDefaults.td | ||
AnonDefinitionOnDemand.td | ||
BitsInitOverflow.td | ||
cast.td | ||
CStyleComment.td | ||
Dag.td | ||
defmclass.td | ||
DefmInherit.td | ||
DefmInsideMultiClass.td | ||
dg.exp | ||
eq.td | ||
eqbit.td | ||
FieldAccess.td | ||
foreach.td | ||
ForwardRef.td | ||
GeneralList.td | ||
if.td | ||
ifbit.td | ||
Include.inc | ||
Include.td | ||
IntBitInit.td | ||
LazyChange.td | ||
LetInsideMultiClasses.td | ||
lisp.td | ||
ListArgs.td | ||
ListArgsSimple.td | ||
ListConversion.td | ||
ListManip.td | ||
ListSlices.td | ||
MultiClass.td | ||
MultiClassDefName.td | ||
MultiClassInherit.td | ||
nested-comment.td | ||
SetTheory.td | ||
Slice.td | ||
strconcat.td | ||
String.td | ||
subst2.td | ||
subst.td | ||
SuperSubclassSameName.td | ||
TargetInstrInfo.td | ||
TargetInstrSpec.td | ||
TemplateArgRename.td | ||
Tree.td | ||
TreeNames.td | ||
UnsetBitInit.td | ||
UnterminatedComment.td | ||
usevalname.td |