let the generic code handle it. This fixes CodeGen/Generic/2005-10-21-longlonggtu.ll on ppc.
also, reindent this code
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For example, we can now join things like [0-30:0)[31-40:1)[52-59:2)
with [40:60:0) if the 52-59 range is defined by a copy from the 40-60 range.
The resultant range ends up being [0-30:0)[31-60:1).
This fires a lot through-out the test suite (e.g. shrinking bc from
19492 -> 18509 machineinstrs) though most gains are smaller (e.g. about
50 copies eliminated from crafty).
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(an unused method).
Fix the merger so that it can merge ranges like this [10:12)[16:40) with
[12:38) into [10:40) instead of bogus ranges. This sort of input will be
possible for the merger coming shortly
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tblgen: In ZAPNOTi: Cannot use 'IZAPX' in an input pattern!
for a bad pattern, instead of an ugly assertion.
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Add a new flag to TargetLowering indicating if the target has really cheap
signed division by powers of two, make ppc use it. This will probably go
away in the future.
Implement some more ISD::SDIV folds in the dag combiner
Remove now dead code in the x86 backend.
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for types that aren't legal, and fail a divisor is less than zero
comparison, which would cause us to drop a subtract.
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Fix a *bug* in the extendIntervalEndTo method. In particular, if adding
[2:10) to an interval containing [0:2),[10:30), we produced [0:10),[10,30).
Which is not the most smart thing to do. Now produce [0:30).
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for some common ops and use them for a few examples. Andrew, if you like
this, feel free to convert the rest over, if you hate it, feel free to
revert.
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that the nodes can be folded with other nodes, and we can not duplicate
code in every backend. Alpha will probably want this too.
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still lots of uglyness.
Maybe calls will come soon.
Fixing the return value of things will be necessary to make alpha work.
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Note that when adding new instructions that you should refer to the table at the
bottom of PPCSchedule.td.
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write things like this:
def : Pat<(add GPRC:$in, 12),
(ADD12 GPRC:$in)>;
Andrew: if this isn't enough or doesn't work for you, please lemme know.
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def : Pat<(trunc G8RC:$in),
(OR8To4 G8RC:$in, X0)>;
Even though this doesn't make any sense on PPC :)
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