[X86] Fold EXPAND(X,Y,M) -> SELECT(M,X,Y) when M is a lowest bit mask (#179630)
If a EXPAND node mask is just the lowest bits, then we can replace it
with a more general SELECT node, which can be cheaper and potentially
allow predication.
Fixes #179008
[NFC][LLVM] Make `MachineInstrBuilder::constrainAllUses` return `void` (#179632)
This function always returns `true`; so we can transform it to return
`void` and simplify the code.
Follow up of https://github.com/llvm/llvm-project/pull/179501 .
[AMDGPU][SIRegisterInfo] Fix maxoffset calculation in buildSpillLoadStore (#179182)
This PR addresses Maxoffset calculation bug in SIRegisterInfo. When
RemSize is non-zero, maxoffset, that needs to be encoded in the offset
field, will be equal to "Offset + Size".
---------
Co-authored-by: Abhinav Garg <abhigarg at amd.com>
[AMDGPU] Add CmpLG and OrN2 operators to LaneMaskConstants (#179493)
Add CmpLG and OrN2 operators to be able to use the LaneMaskConstants in
PhiLoweringHelper from SILowerI1Copies
Firewall - Rules [new]: Add all rules option to interface selectpicker and make it default selection (#9713)
* Firewall - Rules [new]: Add all rules option to interface selectpicker and select it by default
* Interface select default only on null or no match, not on empty string
* To fix URL hash weirdness, it's best to special case __floating and __any in the frontend
* Lower diff in controller by folding null case into is_if
* firewall: tweak the interface selector
Show group name and description. Could be inconvenient when
the description is long, but better for the auto-groups.
That also removes the hint at the end. See note below.
Use fixed width logos for the interface groupings.
Remove muted from the any selection.
TODO/Remarks:
The groupings being shown as muted is a bit inconvenient also
[16 lines not shown]
[X86] Fold vgf2p8affineqb XOR with splat constant into immediate (#179103)
The vgf2p8affineqb instruction performs an affine transformation on each
byte and then XORs the result with an 8-bit immediate operand. When this
instruction is followed by a standalone XOR with a splatted constant,
LLVM currently generates extra instructions instead of folding the
constant into the instruction's immediate.
This PR adds a DAG combine optimization that detects the pattern
vgf2p8affineqb(x, m, imm8) ^ C where C is a splatted 8-bit constant and
transforms it to vgf2p8affineqb(x, m, imm8 ^ C), eliminating the
unnecessary XOR instruction.
- The optimization runs during the combine phase after type legalization
- Handles XOR with the constant on either side (commutative)
- Only applies when the GFNI instruction has a single use to avoid
de-optimization
- Validates that the XOR operand is a splatted 8-bit constant before
folding
- Includes test coverage for positive cases and negative cases
(multi-use, non-splat constant, variable XOR)
[NFC][LLVM] Make `MachineInstrBuilder::constrainAllUses` return `void`
This function always returns `true`; so we can transform it to return
`void` and simplify the code.
Follow up of https://github.com/llvm/llvm-project/pull/179501 .
Firewall - Rules [new]: Add all rules option to interface selectpicker and make it default selection (#9713)
* Firewall - Rules [new]: Add all rules option to interface selectpicker and select it by default
* Interface select default only on null or no match, not on empty string
* To fix URL hash weirdness, it's best to special case __floating and __any in the frontend
* Lower diff in controller by folding null case into is_if
* firewall: tweak the interface selector
Show group name and description. Could be inconvenient when
the description is long, but better for the auto-groups.
That also removes the hint at the end. See note below.
Use fixed width logos for the interface groupings.
Remove muted from the any selection.
TODO/Remarks:
The groupings being shown as muted is a bit inconvenient also
[14 lines not shown]
[SelectionDAG] Use promoted types when creating nodes after type legalization (#178617)
When creating new nodes with illegal types after type legalization, we
should try to use promoted type to avoid creating nodes with illegal
types.
Fixes: https://github.com/llvm/llvm-project/issues/177155
(cherry picked from commit 38e280d8a405bb442d176b8dab18da63d3fc2810)
