tree 8017db140bf761e11383c4215aec8b9fd0b2819b
parent 279476d30d534aaccaec90288e723a8ab7ab1680
author Matthias Braun <matze@braunis.de> 1456862601 +0000
committer Matthias Braun <matze@braunis.de> 1456862601 +0000

TableGen: Check scheduling models for completeness

TableGen checks at compiletime that for scheduling models with
"CompleteModel = 1" one of the following holds:

- Is marked with the hasNoSchedulingInfo flag
- The instruction is a subclass of Sched
- There are InstRW definitions in the scheduling model

Typical steps necessary to complete a model:

- Ensure all pseudo instructions that are expanded before machine
  scheduling (usually everything handled with EmitYYY() functions in
  XXXTargetLowering).
- If a CPU does not support some instructions mark the corresponding
  resource unsupported: "WriteRes<WriteXXX, []> { let Unsupported = 1; }".
- Add missing scheduling information.

Differential Revision: http://reviews.llvm.org/D17747

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262384 91177308-0d34-0410-b5e6-96231b3b80d8