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Diffstat (limited to 'llvm/docs/TableGen/ProgRef.rst')
| -rw-r--r-- | llvm/docs/TableGen/ProgRef.rst | 39 |
1 files changed, 25 insertions, 14 deletions
diff --git a/llvm/docs/TableGen/ProgRef.rst b/llvm/docs/TableGen/ProgRef.rst index 7b30698..2b1af05 100644 --- a/llvm/docs/TableGen/ProgRef.rst +++ b/llvm/docs/TableGen/ProgRef.rst @@ -219,17 +219,17 @@ TableGen provides "bang operators" that have a wide variety of uses: .. productionlist:: BangOperator: one of - : !add !and !cast !con !dag - : !div !empty !eq !exists !filter - : !find !foldl !foreach !ge !getdagarg - : !getdagname !getdagop !gt !head !if - : !initialized !instances !interleave !isa !le - : !listconcat !listflatten !listremove !listsplat !logtwo - : !lt !match !mul !ne !not - : !or !range !repr !setdagarg !setdagname - : !setdagop !shl !size !sra !srl - : !strconcat !sub !subst !substr !tail - : !tolower !toupper !xor + : !add !and !cast !con !dag + : !div !empty !eq !exists !filter + : !find !foldl !foreach !ge !getdagarg + : !getdagname !getdagop !getdagopname !gt !head + : !if !initialized !instances !interleave !isa + : !le !listconcat !listflatten !listremove !listsplat + : !logtwo !lt !match !mul !ne + : !not !or !range !repr !setdagarg + : !setdagname !setdagop !setdagopname !shl !size + : !sra !srl !strconcat !sub !subst + : !substr !tail !tolower !toupper !xor The ``!cond`` operator has a slightly different syntax compared to other bang operators, so it is defined separately: @@ -1443,7 +1443,8 @@ DAG. The following bang operators are useful for working with DAGs: ``!con``, ``!dag``, ``!empty``, ``!foreach``, ``!getdagarg``, ``!getdagname``, -``!getdagop``, ``!setdagarg``, ``!setdagname``, ``!setdagop``, ``!size``. +``!getdagop``, ``!getdagopname``, ``!setdagarg``, ``!setdagname``, ``!setdagop``, +``!setdagopname``, ``!size``. Defvar in a record body ----------------------- @@ -1695,9 +1696,11 @@ and non-0 as true. This operator concatenates the DAG nodes *a*, *b*, etc. Their operations must equal. - ``!con((op a1:$name1, a2:$name2), (op b1:$name3))`` + ``!con((op:$lhs a1:$name1, a2:$name2), (op:$rhs b1:$name3))`` - results in the DAG node ``(op a1:$name1, a2:$name2, b1:$name3)``. + results in the DAG node ``(op:$lhs a1:$name1, a2:$name2, b1:$name3)``. + The name of the dag operator is derived from the LHS DAG node if it is + set, otherwise from the RHS DAG node. ``!cond(``\ *cond1* ``:`` *val1*\ ``,`` *cond2* ``:`` *val2*\ ``, ...,`` *condn* ``:`` *valn*\ ``)`` This operator tests *cond1* and returns *val1* if the result is true. @@ -1819,6 +1822,10 @@ and non-0 as true. dag d = !dag(!getdagop(someDag), args, names); +``!getdagopname(``\ *dag*\ ``)`` + This operator retrieves the name of the given *dag* operator. If the operator + has no name associated, ``?`` is returned. + ``!gt(``\ *a*\ `,` *b*\ ``)`` This operator produces 1 if *a* is greater than *b*; 0 otherwise. The arguments must be ``bit``, ``bits``, ``int``, or ``string`` values. @@ -1949,6 +1956,10 @@ and non-0 as true. Example: ``!setdagop((foo 1, 2), bar)`` results in ``(bar 1, 2)``. +``!setdagopname(``\ *dag*\ ``,``\ *name*\ ``)`` + This operator produces a DAG node with the same operator and arguments as + *dag*, but replacing the name of the operator with *name*. + ``!shl(``\ *a*\ ``,`` *count*\ ``)`` This operator shifts *a* left logically by *count* bits and produces the resulting value. The operation is performed on a 64-bit integer; the result |