Displaying 7 results from an estimated 7 matches for "extending_load_predicate".
2018 Nov 30
2
[RFC] Tablegen-erated GlobalISel Combine Rules
...t;any> you described above and needed it to conform to the dag type) but I did like that effect when I saw it written down :-).
> [snip]
>> _Passing arbitrary data from match to apply_
>> The main change in this section that hasn't already been discussed is that the result of extending_load_predicate has been moved to the new 'outs' section of GIMatchPredicate and the code expansion refers to a particular output of the predicate using 'matchinfo.B' similar to a struct member or multi-operand ComplexPatterns.
>> def extending_load_matchdata : GIDefMatchData<"Pre...
2018 Nov 27
3
[RFC] Tablegen-erated GlobalISel Combine Rules
...$C)),
(apply (create_imm [{ 2 * ${B}->getZExtValue() }], apint_value:$B):$NB,
(G_ADD $t1, $A, $A),
(G_ADD $D, $t1, $NB))>;
Passing arbitrary data from match to apply
The main change in this section that hasn't already been discussed is that the result of extending_load_predicate has been moved to the new 'outs' section of GIMatchPredicate and the code expansion refers to a particular output of the predicate using 'matchinfo.B' similar to a struct member or multi-operand ComplexPatterns.
def extending_load_matchdata : GIDefMatchData<"PreferredTu...
2018 Nov 27
2
[RFC] Tablegen-erated GlobalISel Combine Rules
...(G_ADD $D, $t1, $NB))>;
// $D is needed because we wanted operand instead of reg. We could rewrite the predicate to take a reg though.
def extending_loads : GICombineRule<
(defs operand:$D, reg:$A, extending_load_matchdata:$matchinfo),
(match (G_LOAD $D, $A),
(extending_load_predicate operand:$A,
extending_load_matchdata:$matchinfo)),
(apply (exec [{ Helper.applyCombineExtendingLoads(${D}, ${matchinfo.B}); }],
reg:$D, extending_load_matchdata:$matchinfo)>;
// I haven't included any rules for omitting defs...
2018 Nov 30
2
[RFC] Tablegen-erated GlobalISel Combine Rules
...$NB))>;
>> // $D is needed because we wanted operand instead of reg. We could rewrite the predicate to take a reg though.
>> def extending_loads : GICombineRule<
>> (defs operand:$D, reg:$A, extending_load_matchdata:$matchinfo),
>> (match (G_LOAD $D, $A),
>> (extending_load_predicate operand:$A,
>> extending_load_matchdata:$matchinfo)),
>> (apply (exec [{ Helper.applyCombineExtendingLoads(${D}, ${matchinfo.B}); }],
>> reg:$D, extending_load_matchdata:$matchinfo)>;
>> // I haven't included any rules for omitting defs from GIMacro but I can look...
2018 Nov 09
5
[RFC] Tablegen-erated GlobalISel Combine Rules
...operations. This rule passes a struct (PreferredTuple) between the current C++ equivalent for the match to the current C++ equivalent to the apply. Converting that into this tablegen syntax, we'd write:
def extending_load_matchdata : GIDefMatchData<"PreferredTuple">;
def extending_load_predicate : GIMatchPredicate<
(ins reg:$A, extending_load_matchdata:$B), bool, [{
return Helper.matchCombineExtendingLoads(${A}, ${matchinfo});
}]>;
def extending_loads : GICombineRule<
(defs root:$root, reg:$A, extending_load_matchdata:$matchinfo),
(match [{MIR %r...
2018 Nov 10
3
[RFC] Tablegen-erated GlobalISel Combine Rules
...ule passes a struct (PreferredTuple) between the current C++ equivalent for the match to the current C++ equivalent to the apply. Converting that into this tablegen syntax, we'd write:
>> def extending_load_matchdata : GIDefMatchData<"PreferredTuple">;
>> def extending_load_predicate : GIMatchPredicate<
>> (ins reg:$A, extending_load_matchdata:$B), bool, [{
>> return Helper.matchCombineExtendingLoads(${A}, ${matchinfo});
>
> I assume this was intended to be ${B} instead of ${matchinfo}?
Yes, that's right. There's always at least one...
2018 Nov 12
3
[RFC] Tablegen-erated GlobalISel Combine Rules
...unset if the result has a name.
>>>> }]>;
>>>> def extending_loads : GICombineRule<
>>>> (defs root:$root, reg:$A, extending_load_matchdata:$matchinfo),
>>>> (match [{MIR %root = G_LOAD %A }],
>>>> (extending_load_predicate root:$A,
>>>> extending_load_matchdata:$matchinfo)),
>>>> (apply (exec [{ Helper.applyCombineExtendingLoads(${root}, ${matchinfo}); }],
>>>> reg:$root, extending_load_matchdata:$matchinfo)>;
>...