I have a large number of instruction patterns that involves a lot of
replication in TableGen.
To reduce this replication I want to use 'foreach', but in this case the
action is operating on 'multiclass' and 'defm'. Basically I
want to make
the following work:
foreach item = { "ReplA", "ReplB", ... ,
"ReplZ" } in {
defm PRE_#item#_POST : BASE_#item#_SUFF<.....>;
}
Unfortunately TableGen doesn't handle this for 'multiclass' and
'defm', so I
have made adaptations to 'lib/TableGen/TGParser.*' that would allow this
to
happen. In this code I have a variable 'idFragment' that represents the
iteration variable name for the 'foreach' loop. Next I want to perform
the
substation, but I can see how I get the current value to perform the
replacement. My code is:
for (ForeachLoop var: Loops) {
if (var.IterVar->getName() == idFragment) {
but having identified where to perform the replacement, I can't find how to
get the current value to replace 'item' with {e.g. is it
'ReplF'?}
Any hints on how I can do this? The normal replacement code I find very
hard to follow.
Thanks,
MartinO
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20160616/dc59a6fc/attachment.html>