[mlir][reducer] Add eraseRedundantBlocksInRegion and getSuccessorForwardOperands API to BranchOpInterface (#187864)
To simplify the output of the reduction-tree pass, this PR introduces
the eraseRedundantBlocksInRegion. For regions containing multiple
execution paths, this functionality selects the shortest 'interesting'
path. Additionally, this PR adds the getSuccessorForwardOperands API to
BranchOpInterface. This allows us to extract the ForwardOperands for a
specific path chosen from multiple alternatives, enabling the creation
of a cf.br operation for the redirected jump.
From Rui-Xiang Guo in private email
According to the c906 user manual,
it uses sync.s to ensure completion of clean operations.
Change the fence rw,rw to sync.s in the thead cache operations.
Hyper-V: Detect Extended Destination ID support
Hyper-V advertises support for the Extended Destination ID standard via
bit 2 of the value returned in the EAX register when the hypervisor
stack properties are queried via CPUID.
This is based on a commit to the Linux kernel, as there does not seem
to be any other documentation of this feature.
Reviewed by: Souradeep Chakrabarti
MFC after: 3 weeks
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D55432
Hyper-V: Detect Extended Destination ID support
Hyper-V advertises support for the Extended Destination ID standard via
bit 2 of the value returned in the EAX register when the hypervisor
stack properties are queried via CPUID.
This is based on a commit to the Linux kernel, as there does not seem
to be any other documentation of this feature.
Reviewed by: Souradeep Chakrabarti
MFC after: 3 weeks
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D55432
Bhyve: Detect Extended Destination ID support
Bhyve advertises support for the Extended Destination ID standard via
bit 0 (aka CPUID_BHYVE_FEAT_EXT_DEST_ID) of the value returned in the
EAX register when Bhyve features are queried via CPUID.
MFC after: 3 weeks
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D55431
Bhyve: Detect Extended Destination ID support
Bhyve advertises support for the Extended Destination ID standard via
bit 0 (aka CPUID_BHYVE_FEAT_EXT_DEST_ID) of the value returned in the
EAX register when Bhyve features are queried via CPUID.
MFC after: 3 weeks
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D55431
vmm: Move defines from x86.c to x86/bhyve.h
The values CPUID_BHYVE_FEATURES and CPUID_BHYVE_FEAT_EXT_DEST_ID are
useful for guests, not just hosts; so they belong in a header file in
sys/x86/include rather than simply in the .c file implementing the
bhyve host side.
The original addition of these defines took place without adding a
copyright statement, but since I'm moving them into a new file I've
added the original author's standard copyright (Amazon).
MFC after: 3 weeks
Fixes: 313a68ea20b4 ("bhyve: Add CPUID_BHYVE_FEATURES leaf")
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D55430
vmm: Move defines from x86.c to x86/bhyve.h
The values CPUID_BHYVE_FEATURES and CPUID_BHYVE_FEAT_EXT_DEST_ID are
useful for guests, not just hosts; so they belong in a header file in
sys/x86/include rather than simply in the .c file implementing the
bhyve host side.
The original addition of these defines took place without adding a
copyright statement, but since I'm moving them into a new file I've
added the original author's standard copyright (Amazon).
MFC after: 3 weeks
Fixes: 313a68ea20b4 ("bhyve: Add CPUID_BHYVE_FEATURES leaf")
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D55430
Xen: Detect Extended Destination ID support
Xen advertises support for the Extended Destination ID standard via
bit 5 (aka XEN_HVM_CPUID_EXT_DEST_ID) of the value returned in the
EAX register when Xen features are queried via CPUID.
MFC after: 3 weeks
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D55429
Xen: Detect Extended Destination ID support
Xen advertises support for the Extended Destination ID standard via
bit 5 (aka XEN_HVM_CPUID_EXT_DEST_ID) of the value returned in the
EAX register when Xen features are queried via CPUID.
MFC after: 3 weeks
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D55429
KVM: Detect Extended Destination ID support
KVM advertises support for the Extended Destination ID standard via
bit 15 of the value returned in the EAX register when KVM features
are queried via CPUID.
Tested on: EC2 r8i.96xlarge
MFC after: 3 weeks
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D55427
KVM: Detect Extended Destination ID support
KVM advertises support for the Extended Destination ID standard via
bit 15 of the value returned in the EAX register when KVM features
are queried via CPUID.
Tested on: EC2 r8i.96xlarge
MFC after: 3 weeks
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D55427
io_apic: Support APIC Extended Destination IDs
If APIC Extended Destination ID support is enabled, use it in APIC RTEs
by allowing APIC IDs up to 2^15 - 1 and encoding the high bits into
Intel "reserved" bits per the standard.
Reviewed by: kib
MFC after: 3 weeks
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D55889
io_apic: Support APIC Extended Destination IDs
If APIC Extended Destination ID support is enabled, use it in APIC RTEs
by allowing APIC IDs up to 2^15 - 1 and encoding the high bits into
Intel "reserved" bits per the standard.
Reviewed by: kib
MFC after: 3 weeks
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D55889
msi: Support APIC Extended Destination IDs
If APIC Extended Destination ID support is enabled, use it in MSIs by
allowing APIC IDs up to 2^15 - 1 and encoding the high bits into
Intel "reserved" bits per the standard.
Tested on: EC2 r8i.96xlarge
MFC after: 3 weeks
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D55426
msi: Support APIC Extended Destination IDs
If APIC Extended Destination ID support is enabled, use it in MSIs by
allowing APIC IDs up to 2^15 - 1 and encoding the high bits into
Intel "reserved" bits per the standard.
Tested on: EC2 r8i.96xlarge
MFC after: 3 weeks
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D55426
