Utilize common API in PPCTargetParser
(https://github.com/llvm/llvm-project/pull/97541) to set default CPU
with same interfaces for LLC.
This will update AIX default CPU to pwr7 and LoP powerppc64 default CPU
to ppc64.
PowerPC subtargets prior to Power9 use the 'legacy' itinerary way to
provide scheduling information. This patch re-writes the tablegen file
to define the scheduling information in the new SchedModel way, which
can bring improvements to some benchmarks.
Reviewed By: shchenz
Differential Revision: https://reviews.llvm.org/D154488
The LIT test cases were migrated with the script provided by
Nikita Popov. Due to the size of the change it is split into
several parts.
Reviewed By: nemanja, amyk, nikic, PowerPC
Differential Revision: https://reviews.llvm.org/D135470
Support allocation of huge stack frame(>2g) on PPC64.
For ELFv2 ABI on Linux, quoted from the spec 2.2.3.1 General Stack Frame Requirements
> There is no maximum stack frame size defined.
On AIX, XL allows such huge frame.
Reviewed By: #powerpc, nemanjai
Differential Revision: https://reviews.llvm.org/D107886
