Generate brh, brw and brd instructions for byte-swap operations
on P10 and generating a single instruction for a 32-bit swap followed
by a 16-bit right shift.
Reviewed By: stefanp
Differential Revision: https://reviews.llvm.org/D140414
This patch fixes the following two bugs in `PPCInstrInfo::isSignOrZeroExtended` helper, which is used from sign-/zero-extension elimination in PPCMIPeephole pass.
- Registers defined by load with update (e.g. LBZU) were identified as already sign or zero-extended. But it is true only for the first def (loaded value) and not for the second def (i.e. updated pointer).
- Registers defined by ORIS/XORIS were identified as already sign-extended. But, it is not true for sign extension depending on the immediate (while it is ok for zero extension).
To handle the first case, the parameter for the helpers is changed from `MachineInstr` to a register number to distinguish first and second defs. Also, this patch moves the initialization of PPCMIPeepholePass to allow mir test case.
Reviewed By: nemanjai
Differential Revision: https://reviews.llvm.org/D40554
Currently the regsiter operand definitions are found in three separate files.
This patch moves all of the definitions into PPCRegisterInfo.td.
Reviewed By: amyk
Differential Revision: https://reviews.llvm.org/D123543
Renamed the two classes 8LS_DForm_R_SI34_RTA5 and 8LS_DForm_R_SI34_XT6_RA5 to
8LS_DForm_R_SI34_RTA5_MEM and 8LS_DForm_R_SI34_XT6_RA5_MEM because the
instructions that use the classes use memory reads/writes.
Moved the instruction defs up closer to the classes.
Removed unnecessary whitespace.
Currently all of the MMA instructions as well as the MMA related register info
is bundled with the Power 10 instructions. This patch just splits them out.
Reviewed By: lei
Differential Revision: https://reviews.llvm.org/D120515
Added the license info as well as description about how classes should be named
based on existing documentation.
Reviewed By: lei, #powerpc
Differential Revision: https://reviews.llvm.org/D120530
Add the Power 10 instruction LXVKQ.
This patch was taken from an original patch by: Yi-Hong Lyu
Reviewed By: lei
Differential Revision: https://reviews.llvm.org/D117507
