[VPlan] Use RPOT in CSE, fixing potential crash (#187548)
A CSE crash is observed arising from outdated hash values unless we
forbid replacements in successor phis in blocks that are not dominated
by the def: the crash is observed when there is a block with CSE'able
phis with CSE'able incoming values, with incoming values coming from a
non-dominating block, under the condition that the block with the phis
is visited before the non-dominating block. It is unfortunately
impossible to write a test case showing a crash at present, but crashes
do occur when attempting to CSE DerivedIV recipes. The root cause of the
crash is visiting a non-dominated use before a def, and hence would be
fixed by a reverse post-order traversal.
Fixes #187499.
Co-authored-by: Luke Lau <luke at igalia.com>
[MLIR][MemRef] Fix LoadOpOfExpandShapeOpFolder returning failure after IR change (#188964)
LoadOpOfExpandShapeOpFolder<vector::TransferReadOp>::matchAndRewrite
called resolveSourceIndicesExpandShape (which creates
AffineLinearizeIndexOp ops via the rewriter) before checking whether the
vector::TransferReadOp preconditions hold. When those checks failed
(sourceRank < vectorRank or permutation map mismatch), the pattern
returned failure() after already modifying the IR, triggering "pattern
returned failure but IR did change" under
MLIR_ENABLE_EXPENSIVE_PATTERN_API_CHECKS.
Fix by hoisting the vector::TransferReadOp precondition checks to before
the resolveSourceIndicesExpandShape call. The source rank is derived
from expandShapeOp.getViewSource()'s type (no IR creation needed), and
the permutation map check only uses op attributes. Only if all checks
pass do we proceed to create the linearized-index ops.
Assisted-by: Claude Code
Fix a failure present with MLIR_ENABLE_EXPENSIVE_PATTERN_API_CHECKS=ON.
[DA] Check nsw flags for addrecs in the Exact RDIV test (#189536)
This patch adds a check to ensure that the addrecs have nsw flags at the
beginning of the Exact SIV test. If either of them doesn't have, the
analysis bails out. This check is necessary because the subsequent
process in the Exact SIV test assumes that they don't wrap.
sw_reg_strategy: do not clobber b_private
this fixes a regression caused by "uvm_swap.c: make the drum mpsafe".
b_private is for the owner of the buffer.
in case of /dev/drum i/o, we are not the owner of the buffer.
kern_physio.c is.
Add b_private2 to struct buf
i plan to use this for swap i/o.
i'm not bumping kernel version as i reused an unused field.
(it used to be softdep b_dep and has been unused since 2009.)
tex-schulmathematik{,-doc}: update to 1.7.1
Document classes schulma-ab and schulma-klausur: correction of the total
number of pages for LaTeX 2025-06-01
Revert "[MC] Fuse relaxation and layout into a single forward pass" (#189548)
Reverts llvm/llvm-project#184544 due to build failures and binary size
regressions; see comments on the PR.
Even if the failure to fixup CBZ instructions is due to a previously
existing problem, it was triggered by this PR. And the unnecessary
widening of the LBR instructions seems like a bad regression in itself.
swstrategy: reject non page aligned i/o explicitly
our swap offset calculation logic assumes page aligned i/o.
non aligned requests from /dev/drum silently go to a wrong block.
it has always been this way since the initial uvm import in 1998.
this commit fixes it by simply rejecting non aligned requests.
note: requests from swap and libkvm are always page aligned.
[lldb] Change MemoryRegionInfo::SetIsShadowStack into a "builder" method (#189565)
Meaning a method on an object, which returns a reference to self.
I am doing this because it was pointed out to me that MemoryRegionInfo
has lots of construction paramaters, and most of the time, we want the
default value for most of the things.
So now we can do:
MemoryRegionInfo(...); // Shadow stack is "don't know".
MemoryRegionInfo(...).SetIsShadowStack(eNo) // Shadow stack is "no".
Which removes one parameter from every use of the constructor.
Along the way I realised that the shadow stack "ss" flag is only tested
by the Guarded Control Stack tests, which only run on specific Arm
hardware. I've added a new "ss" test to LinuxProcMapsTest, which will
run on any system.
[LV][NFC] Remove more function attributes from tests (#188185)
Following on from PR #188091 I've also removed the following function
attributes from tests:
nounwind uwtable ssp
as they didn't make any difference to the tests.
[RISCV] Explicitly list supported VP intrinsics. NFC (#189547)
In preparation for splitting off #179622, list all vp intrinsics in a
list. Future PRs will remove intrinsics from this list when the
corresponding codegen support is removed.
swread/swwrite: hold swap_syscall_lock
to ensure that the list of swap devices is stable
while we are operating on them.
https://gnats.netbsd.org/60147
[VPlan] Extract reverse mask from reverse accesses (#155579)
Following #146525, separate the reverse mask from reverse access
recipes.
At the same time, remove the unused member variable `Reverse` from
`VPWidenMemoryRecipe`.
This will help to reduce redundant reverse mask computations by
VPlan-based common subexpression elimination.
[lld][COFF] Restore `lto-embed-bitcode` and `-fembed-bitcode` Bitcode Embedding Features (#188398)
Removes the patches introduced by #150897 which broke LTO embed
documented features for creating whole-program-bitcode representations
of executables, used in production analysis/rewriting toolsets. This was
a documented feature available up until 21.1.8 broken by 22.x release.
This previously allowed the users to have a whole-program-bitcode
section `.llvmbc` embedded inside of the final executable.
(cherry picked from commit 1e99c9e4c7e82c8417e4bdb0d1cb3b86e6640c6c)
[NFC] Remove stray files from top level directory (#189563)
Added untracked files into the top level directory by mistake, reverting
the change in this PR.
Co-authored-by: himadhith <himadhith.v at ibm.com>
[clang-repl] Fix C89 incompatible keywords (#189432)
Restrict and inline keywords are removed for C89 interpreter since these
keywords caused fail at runtime preamble.
Fixes #189088
(cherry picked from commit 8bd83048084c27615e9536227fbb2545472915e7)
[analyzer][NFC] Reorganize bstring.cpp tests (#188709)
This change eliminates preprocessor-based suppression of test cases by
introducing multi-prefix verify options to run-lines. This slightly
increases coverage.
[lldb] Only create RegisterTypeBuilderClang plugin once (#189393)
This plugin creates types based on information from target XML, which is
parsed only once per session. It has internal logic to reuse created
types, but the plugin itself was being remade every time a type was
requested.
