Commit Graph

8 Commits

Author SHA1 Message Date
Jonas Paulsson 9a485985cd [SystemZ] Remove scheduling info from some Pseudo instructions (NFC).
If the MachineInstr uses a custom inserter and is then erased after
instruction selection, there is no use for mapping it to a sched class.

Review: Ulrich Weigand
llvm-svn: 331040
2018-04-27 14:09:03 +00:00
Jonas Paulsson 319ce96fe4 [SystemZ] Use ResourceCycles=30 for FPd unit (NFC).
This is better than listing FPd 30 times :-)

Review: Ulrich Weigand
llvm-svn: 329887
2018-04-12 08:08:42 +00:00
Jonas Paulsson e3f53e5d14 [SystemZ] Remove FullInstRWOverlapCheck from SchedMachineModels.
This is NFC, even though it caught just a few cases of overlapping regular
expressions.

Review: Ulrich Weigand
llvm-svn: 329886
2018-04-12 08:06:04 +00:00
Craig Topper e1d6a4df1c [TableGen] When trying to reuse a scheduler class for instructions from an InstRW, make sure we haven't already seen another InstRW containing this instruction on this CPU.
This is similar to the check later when we remap some of the instructions from one class to a new one. But if we reuse the class we don't get to do that check.

So many CPUs have violations of this check that I had to add a flag to the SchedMachineModel to allow it to be disabled. Hopefully we can get those cleaned up quickly and remove this flag.

A lot of the violations are due to overlapping regular expressions, but that's not the only kind of issue it found.

llvm-svn: 327808
2018-03-18 19:56:15 +00:00
Jonas Paulsson 4690193dec [SystemZ] Minor fixing in SystemZScheduleZ14.td
Some minor corrections for recently added instructions.

Review: Ulrich Weigand
llvm-svn: 308429
2017-07-19 10:19:21 +00:00
Ulrich Weigand f2968d58cb [SystemZ] Add support for IBM z14 processor (3/3)
This adds support for the new 128-bit vector float instructions of z14.
Note that these instructions actually only operate on the f128 type,
since only each 128-bit vector register can hold only one 128-bit
float value.  However, this is still preferable to the legacy 128-bit
float instructions, since those operate on pairs of floating-point
registers (so we can hold at most 8 values in registers), while the
new instructions use single vector registers (so we hold up to 32
value in registers).

Adding support includes:
- Enabling the instructions for the assembler/disassembler.
- CodeGen for the instructions.  This includes allocating the f128
  type now to the VR128BitRegClass instead of FP128BitRegClass.
- Scheduler description support for the instructions.

Note that for a small number of operations, we have no new vector
instructions (like integer <-> 128-bit float conversions), and so
we use the legacy instruction and then reformat the operand
(i.e. copy between a pair of floating-point registers and a
vector register).

llvm-svn: 308196
2017-07-17 17:44:20 +00:00
Ulrich Weigand 33435c4c9c [SystemZ] Add support for IBM z14 processor (2/3)
This adds support for the new 32-bit vector float instructions of z14.
This includes:
- Enabling the instructions for the assembler/disassembler.
- CodeGen for the instructions, including new LLVM intrinsics.
- Scheduler description support for the instructions.
- Update to the vector cost function calculations.

In general, CodeGen support for the new v4f32 instructions closely
matches support for the existing v2f64 instructions.

llvm-svn: 308195
2017-07-17 17:42:48 +00:00
Ulrich Weigand 2b3482fe85 [SystemZ] Add support for IBM z14 processor (1/3)
This patch series adds support for the IBM z14 processor.  This part includes:
- Basic support for the new processor and its features.
- Support for new instructions (except vector 32-bit float and 128-bit float).
- CodeGen for new instructions, including new LLVM intrinsics.
- Scheduler description for the new processor.
- Detection of z14 as host processor.

Support for the new 32-bit vector float and 128-bit vector float
instructions is provided by separate patches.

llvm-svn: 308194
2017-07-17 17:41:11 +00:00