[LoongArch] Initial implementation for `enableMemCmpExpansion` hook (#166526)
After overriding `TargetTransformInfo::enableMemCmpExpansion` in this
commit, `MergeICmps` and `ExpandMemCmp` passes will be enabled on
LoongArch.
[Github] Make Windows container use zstd (#167022)
This enables much faster image unpack times. We benchmarked 20-30%
improvements when testing this initially. Use skopeo to copy the image
as it just works over the docker-archive/OCI container formats and does
not need to unpack the image to upload it.
[Github] Update PR labeller to v6.0.1 (#167246)
This was reverted earlier due to me not realizing that the config format
also changed. This patch updates the config to match the new format and
bumps the version.
[mlir][tosa] Fix crash in `tosa.concat` verifier (#165966)
The `tosa.concat` verifier crashed when the output rank did not match
the input rank. This PR adds a proper check and error emission to
prevent the crash. Fixes #159742.
[LoongArch] Initial implementation for `enableMemCmpExpansion` hook
After overriding `TargetTransformInfo::enableMemCmpExpansion`
in this commit, `MergeICmps` and `ExpandMemCmp` passes will be
enabled on LoongArch.
[VPlan] Use VPInstructionWithType for casts in VPlan0. (NFC)
Use VPInstructionWithType for casts in VPlan0, to enable additional
analysis/transforms on VPlan0, and more accurate modeling in VPlan0.
[InstCombine] Don't sink if it would require dropping deref assumptions. (#166945)
Currently sinking assumes in instcombine drops assumes if they would
prevent sinking. Removing dereferenceable assumptions earlier on can
inhibit vectorization of early-exit loops in practice.
Special-case deferenceable assumptions so that they block sinking. This
can be combined with a separate change to drop dereferencebale
assumptions after vectorization: https://clang.godbolt.org/z/jGqcx3sbs
PR: https://github.com/llvm/llvm-project/pull/166945
[BOLT] Support restartable sequences in tcmalloc (#167195)
Add `RSeqRewriter` to detect code references from `__rseq_cs` section
and ignore function referenced from that section. Code references are
detected via relocations (static or dynamic).
Note that the abort handler is preceded by a 4-byte signature byte
sequence and we cannot relocate the handler without that the signature,
otherwise the application may crash. Thus we are ignoring the function,
i.e. making sure it's not separated from its signature.
[lldb] Disable TestLocationsAfterRebuild for remote targets (#167239)
#160199 broke buildbots `lldb-remote-linux-ubuntu` and
`lldb-remote-linux-win`.
This patch must make these buildbots green for now.
[AArch64] Decompose faddv with known zero elements
FADDV is matched into FADDPv4f32 + FADDPv2i32p but this can be relaxed
when one element (usually the 4th) or more are known to be zero.
Before:
movi d1, #0000000000000000
mov v0.s[3], v1.s[0]
faddp v0.4s, v0.4s, v0.4s
faddp s0, v0.2s
After:
mov s1, v0.s[2]
faddp s0, v0.2s
fadd s0, s0, s1
[SandboxIR] Remove tight-coupling with LLVM's SwitchInst::CaseHandle (#167093)
SandboxIR's SwitchInst CaseHandle was relying on LLVM IR's
SwitchInst::CaseHandleImpl template, which may call private functions of
SandboxIR's SwitchInst. This creates a dependency cycle which is against
the design principles of Sandbox IR.
The issue was exposed by:
https://github.com/llvm/llvm-project/pull/166842 Thanks to @aengelke for
raising the issue.
[AArch64][GlobalISel] Correct instructions for 64bit fneg constant vectors. (#166537)
This code was assuming that the vectors were 128bit. Add handling for
64bit vectors. Some of the tests do not apply yet due to not matching
non-splat vectors.
Fixes #166400
