This patch exploits the prefixed load and store instructions utilizing the
refactored load/store implementation introduced in D93370.
Prefixed load and store instructions are emitted whenever we are loading or
storing a value with an offset that fits into a 34-bit signed immediate.
Patterns for the prefixed load and stores are added in this patch, as well as
the implementation that detects when we are loading and storing a value with an
offset that fits in 34-bits.
Differential Revision: https://reviews.llvm.org/D96075
On PowerPC, VSRpRC represents the pairs of even and odd VSX register,
and VRRC corresponds to higher 32 VSX registers. In some cases, extra
copies are produced when handling incoming VRRC arguments with VSRpRC.
This patch changes allocation order of VSRpRC to eliminate this kind of
copy.
Stack frame sizes may increase if allocating non-volatile registers, and
some other vector copies happen. They need fix in future changes.
Reviewed By: nemanjai
Differential Revision: https://reviews.llvm.org/D104855
Relaxing superclass constraint for VSX register classes helps reducing
32-byte spills and copies when register pressure is high.
In test case affected, some of them introduces more copies due to new
allocation order. However, this patch should not be the root cause, and
we may be able to fix it in other places of register allocation.
Reviewed By: nemanjai
Differential Revision: https://reviews.llvm.org/D104006
NOTE: This patch was originally written by Anil Mahmud. His code has been
rebased but otherwise left mostly unchanged.
A new instructon on Power 10 allows for the materialization of 34 bit
immediate values. This patch allows the compiler to take advantage of
the new instruction in this situation.
Reviewed By: amyk
Differential Revision: https://reviews.llvm.org/D92879
On PPC, the vector pair instructions are independent from MMA.
This patch renames the vector pair LLVM intrinsics and Clang builtins to replace the _mma_ prefix by _vsx_ in their names.
We also move the vector pair type/intrinsic/builtin tests to their own files.
Differential Revision: https://reviews.llvm.org/D91974
Amy Kwan