Hexagon: Remove dead kill flag maintenance in HexagonQFPOptimizer
The operands are virtual registers, which can no longer carry kill
flags.
Co-authored-by: Claude Opus 5.5 <noreply at anthropic.com>
RISCV: Fix ensureDominates crashes on operands without a vreg def (#241034)
ensureDominates used an unchecked getVRegDef on every register
operand. This crashed on physical register uses or undef vregs. Also
fix dropping an incoming undef flag which would fail the verifier.
Co-authored-by: Claude Opus 5.5 <noreply at anthropic.com>
Revert "[RISCV][clang] Support XSfmm ABI attributes (#206260)" (#241096)
This reverts commit 09dcbfb936c629a1285fb04fff9974456f041804. Revert for
now and investigate why compile time increase.
Attributor: Decide which instructions access memory in the opcode switch
initializeInformationCache already switches over the opcode of every
instruction, and then called mayReadOrWriteMemory out of line for each
one. Decide in the switch instead, where only calls need to check their
memory effects.
Instruction counts (callgrind) with other pending attributor-light
changes applied: attributor-light sqlite3 -0.79%, kimwitu++ k -0.32%,
SPASS cnf -0.31%, consumer-typeset z08 -8.59%; the full attributor
-0.02% to -0.08%.
Co-authored-by: Claude Opus 5.5 <noreply at anthropic.com>
Attributor: Make IRPosition::verify inline without expensive checks (#241087)
IRPosition::verify only checks anything with EXPENSIVE_CHECKS, but
every IRPosition constructor still called it out of line. This
prevented keeping the position in registers plus the cost of the call.
Instruction counts (callgrind) over 68 llvm-test-suite TUs, with other
pending attributor-light changes applied, median:
attributor-light -0.71% (-0.45%), attributor-light-cgscc -0.31%
(-0.38%), attributor -0.35% (-0.45%).
Co-authored-by: Claude Opus 5.5 <noreply at anthropic.com>
[lldb] Don't cache symtabs for memory modules w/ corefile (#237050)
In https://github.com/llvm/llvm-project/pull/229305 I added a new
setting, `symbols.enable-lldb-index-cache-memory-modules` which creates
a DataFileCache symtab file for memory-read modules. Reading the symbol
table out of memory is a serious performance issue, and caching those
tables on the debug host is worth doing by default.
This is not the correct tradeoff if we are doing corefile debugging,
where reading memory is cheap. In that case we need to ignore the
`symbols.enable-lldb-index-cache-memory-modules` setting and not create
the symtabs, unless the user has set
`symbols.enable-lldb-index-cache` themselves.
This patchset is a little tricky because the layers where we can make
this judgement (DynamicLoader or Process) is pretty far away from the
place where we create the Symtab, `ObjectFile::GetSymtab` and there is
another scenario I want to override the default for in the future that
is only knowable to the DynamicLoader (if the DynamicLoader believes ALL
[28 lines not shown]
Use maskTrailingOnes() for the largest operand count
There's nothing in <bit> that builds a mask, but maskTrailingOnes() does,
and it's what Bitfield uses for the field's own mask. Unlike a shift or a
rotate, it's also right for a field as wide as an unsigned.
Assisted-by: Claude Opus 5.5
drm/amdkfd: correct vram_available calculation
From Zhen Han
58d07ddaa5f33052a29cb26ca226da281e5f3475 in linux-6.18.y/6.18.63
9131cc85d0dedd8ba4cae60dbe5985d081551f30 in mainline linux
amdkfd: Fix memory availability double accounting of kfd pinned objects
From Daniel Phillips
c2a3bef88fe10cdb286ad8414b44c7a2935017ff in linux-6.18.y/6.18.63
16df12d7158fb55f20d6e985abd1996cbabab9f8 in mainline linux
drm/amdgpu: wait for pending page table updates before switching a VM to CPU updates
From John Fisher
2368f9aed09cbabb5a8980c2fbc78bde98e170e9 in linux-6.18.y/6.18.63
53d9ef2f518add783bb48a69d77bbc8aea99e911 in mainline linux
drm/amdkfd: wait for a GPU reset before freeing a BO
From William Palacek
2cbdce3fdf929ec5c13007611a37672720bcfb8e in linux-6.18.y/6.18.63
47d799a718439764432d8ef3a0952af45f025f76 in mainline linux
