This is an alternative to D98120. Herein, instead of deleting the transformation entirely, we check
that the underlying objects are both the same and therefore this transformation wouldn't incur a
provenance change, if applied.
https://alive2.llvm.org/ce/z/SYF_yv
Reviewed By: lebedev.ri
Differential Revision: https://reviews.llvm.org/D98588
This test was apparently disabled in 6fcd4e080f, without any
sign of how it was going to be reenabled. This patch rewrites the test
to use update_cc_test_checks, with midend optimizations other that
mem2reg disabled.
The first attempt of this patch in 5ae949a927 failed on bots even
though it worked locally. I've attempted to adjust the RUN lines and
made the test AArch64/ARM specific.
Differential Revision: https://reviews.llvm.org/D98510
Generate a json file containing descriptions of AST classes and their
public accessors which return SourceLocation or SourceRange.
Use the JSON file to generate a C++ API and implementation for accessing
the source locations and method names for accessing them for a given AST
node.
This new API can be used to implement 'srcloc' output in clang-query:
http://ce.steveire.com/z/m_kTIo
In this first version of this feature, only the accessors for Stmt
classes are generated, not Decls, TypeLocs etc. Those can be added
after this change is reviewed, as this change is mostly about
infrastructure of these code generators.
Differential Revision: https://reviews.llvm.org/D93164
The load/store instruction will be transformed to amx intrinsics
in the pass of AMX type lowering. Prohibiting the pointer cast
make that pass happy.
Differential Revision: https://reviews.llvm.org/D98247
Adjust the Win64 calling convention for Swift to pass self in R13, which
is traditionally a CSR. This makes the behaviour similar to the SysV CC
for Swift as well. This should improve the argument passing on Windows,
although it comes at a high cost of ABI incompatibility. Fortunately in
this case, there is no guarantee of ABI stability, and so we can make
this incompatible change.
Change was reverted in commit 8d20f2c2c6 because it was causing an infinite loop. 9228f2f32 fixed the root issue in the code structure, this change just reapplies the original change w/adaptation to the new code structure.
This fixes the bug demonstrated by the test case in the commit message of 8d20f2c2 (which was a revert of cf82700). The root issue was that we have two transforms which are inverses of each other. We use one for simple induction variables (where we can use the post-inc form), and the other for everything else. The problem was that the two transforms could disagree about whether something was an induction variable.
The reverted commit made a change to one of the matcher routines which was used for one of the two transforms without updating the other matcher. However, it's worth noting the existing code w/o the reverted change also has cases where the decision could differ between the two paths.
The fix is simply to consolidate the code such that two paths must agree by construction, and to add an assert to catch any potential future re-divergence.
Triggering the infinite loop requires side stepping the SunkAddrs cache. The SunkAddrs cache has the effect of suppressing the iteration in the common case, but there are codepaths through CGP which restart iteration and clear this cache.
Unfortunately, I have not been able to construct a standalone IR test case for this. The original test case is a c++ program which when compiled by clang demonstrates the infinite loop, but all of my attempts at extracting an IR test case runnable through opt/llc have failed to reproduce. (Including capturing the IR at point of the transform itself!) I have no idea what weird state clang is creating here.
I also tried creating a test case by hand, but gave up after about an hour of trying to find the right combination to dance through multiple transforms to create the end result needed to trip the bug.
They were previously in SyntheticSections.h, but now there are
a bunch of non-synthetic section names in the list.
Also renamed `__functionStarts` to `__func_starts` for uniformity with
other section names + keeps the name under 16 characters (in case we ever
want to write it out as a real section).
Reviewed By: #lld-macho, compnerd
Differential Revision: https://reviews.llvm.org/D98586
Previously, that configuration only used the generic sources, in
addition to the couple specifically chosen arm/mingw files.
Differential Revision: https://reviews.llvm.org/D98547
This fixes a regression from the MemDep-based implementation:
MemDep completely ignores lifetime.start intrinsics that aren't
MustAlias -- this is probably unsound, but it does mean that the
MemDep based implementation successfully eliminated memcpy's from
lifetime.start if the memcpy happens at an offset, rather than
the base address of the alloca.
Add a special case for the case where the lifetime.start spans the
whole alloca (which is pretty much the only kind of lifetime.start
that frontends ever emit), as we don't need to figure out our exact
aliasing relationship in that case, the whole alloca is dead prior
to the call.
If this doesn't cover all practically relevant cases, then it
would be possible to make use of the recently added PartialAlias
clobber offsets to make this more precise.
A 1-bit smulo overflows is both inputs are -1 since the result
should be +1 which can't be represented in a signed 1 bit value.
We can detect this with an AND and a setcc. The multiply result
can also use the same AND.
Reviewed By: RKSimon
Differential Revision: https://reviews.llvm.org/D97634
The structure of this fold is suspect vs. most of instcombine
because it creates instructions and tries to delete them
immediately after.
If we don't have the operand types for the icmps, then we are
not behaving as assumed. And as shown in PR49475, we can inf-loop.
This reverts commit 329aeb5db4,
and relands commit 61f006ac65.
This is a continuation of D89456.
As it was suggested there, now that SCEV models `PtrToInt`,
we can try to improve SCEV's pointer handling.
In particular, i believe, i will need this in the future
to further fix `SCEVAddExpr`operation type handling.
This removes special handling of `ConstantPointerNull`
from `ScalarEvolution::createSCEV()`, and add constant folding
into `ScalarEvolution::getPtrToIntExpr()`.
This way, `null` constants stay as such in SCEV's,
but gracefully become zero integers when asked.
Reviewed By: Meinersbur
Differential Revision: https://reviews.llvm.org/D98147
The added test case crashes before this fix:
```
opt: /repositories/llvm-project/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:5172: BasicBlock::iterator (anonymous namespace)::LSRInstance::AdjustInsertPositionForExpand(BasicBlock::iterator, const (anonymous namespace)::LSRFixup &, const (anonymous namespace)::LSRUse &, llvm::SCEVExpander &) const: Assertion `!isa<PHINode>(LowestIP) && !LowestIP->isEHPad() && !isa<DbgInfoIntrinsic>(LowestIP) && "Insertion point must be a normal instruction"' failed.
```
This is fully analogous to the previous commit,
with the pointer constant replaced to be something non-null.
The comparison here can be strength-reduced,
but the second operand of the comparison happens to be identical
to the constant pointer in the `catch` case of `landingpad`.
While LSRInstance::CollectLoopInvariantFixupsAndFormulae()
already gave up on uses in blocks ending up with EH pads,
it didn't consider this case.
Eventually, `LSRInstance::AdjustInsertPositionForExpand()`
will be called, but the original insertion point it will get
is the user instruction itself, and it doesn't want to
deal with EH pads, and asserts as much.
It would seem that this basically never happens in-the-wild,
otherwise it would have been reported already,
so it seems safe to take the cautious approach,
and just not deal with such users.
With that patch, this test fails with an assertion
```
opt: /repositories/llvm-project/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp:5169: BasicBlock::iterator (anonymous namespace)::LSRInstance::AdjustInsertPositionForExpand(BasicBlock::iterator, const (anonymous namespace)::LSRFixup &, const (anonymous namespace)::LSRUse &, llvm::SCEVExpander &) const: Assertion `!isa<PHINode>(LowestIP) && !LowestIP->isEHPad() && !isa<DbgInfoIntrinsic>(LowestIP) && "Insertion point must be a normal instruction"' failed.
```
This patch adds the infrastructure for allocator support for target memory.
Three allocators are introduced for device, host and shared memory.
The corresponding API functions have the llvm_ prefix temporarily, until they become part of the OpenMP standard.
Differential Revision: https://reviews.llvm.org/D97883
If a memset destination is overwritten by a memcpy and the sizes
are exactly the same, then the memset is simply dead. We can
directly drop it, instead of replacing it with a memset of zero
size, which is particularly ugly for the case of a dynamic size.
When calling getClobberingMemoryAccess() with MemoryLocation on a
MemoryPHI starting access, the walker currently immediately bails
and returns the starting access. This makes sense for the API that
does not accept a location (as we wouldn't know what clobber we
should be checking for), but doesn't make sense for the
MemoryLocation-based API. This means that it can't look through
a MemoryPHI if it's the starting access, but can if there is one
more non-clobbering def in between. This patch removes the limitation.
Differential Revision: https://reviews.llvm.org/D98557
This patch change the rvv frame layout that proposed in D94465. In patch D94465, In the eliminateFrameIndex function,
to eliminate the rvv frame index, create temp virtual register is needed. This virtual register should be scavenged by class
RegsiterScavenger. If the machine function has other unused registers, there is no problem. But if there isn't unused registers,
we need a emergency spill slot. Because of the emergency spill slot belongs to the scalar local variables field, to access emergency
spill slot, we need a temp virtual register again. This makes the compiler report the "Incomplete scavenging after 2nd pass" error.
So I change the rvv frame layout as follows:
```
|--------------------------------------|
| arguments passed on the stack |
|--------------------------------------|<--- fp
| callee saved registers |
|--------------------------------------|
| rvv vector objects(local variables |
| and outgoing arguments |
|--------------------------------------|
| realignment field |
|--------------------------------------|
| scalar local variable(also contains|
| emergency spill slot) |
|--------------------------------------|<--- bp
| variable-sized local variables |
|--------------------------------------|<--- sp
```
Differential Revision: https://reviews.llvm.org/D97111
In order to prevent further building issues related to the usage of SmallVector
in other compilation unit, this patch adjusts the llvm.h header as a workaround
instead.
Besides, this patch reverts previous workarounds:
1. Revert "[NFC] Use llvm::SmallVector to workaround XL compiler problem on AIX"
This reverts commit 561fb7f60a.
2.Revert "[clang][cli] Fix build failure in CompilerInvocation"
This reverts commit 8dc70bdcd0.
Differential Revision: https://reviews.llvm.org/D98552
This makes the target triple, graph name, and full graph content available
when making decisions about how to populate the linker pass pipeline.
Also updates the LLJITWithObjectLinkingLayerPlugin example to show more
API use, including use of the API changes in this patch.
An older version of a function (Fortran::semantics::FindFunctionResult) was
left in flang/lib/Semantics/tools.cpp, and this breaks the static library
build due to a conflict with the intended final version in another
file and library. Remove the old code.
Differential Revision: https://reviews.llvm.org/D98568
The patch adds an argument to update test scripts, such as update_cc_test_checks, for replacing a function name matching a regex. This functionality is needed to match generated function signatures that include file hashes. Example:
The function signature for the following function:
`__omp_offloading_50_b84c41e__Z9ftemplateIiET_i_l30_worker`
with `--replace-function-regex "__omp_offloading_[0-9]+_[a-z0-9]+_(.*)"` will become:
`CHECK-LABEL: @{{__omp_offloading_[0-9]+_[a-z0-9]+__Z9ftemplateIiET_i_l30_worker}}(`
Reviewed By: jdoerfert
Differential Revision: https://reviews.llvm.org/D97107
One of the backup schemes I use for finding kexts and kernels
on the local filesystem is to load a solitary binary when I don't
find any with a dSYM. This usually is a more confusing behavior
than helpful; people expect to get no binary loaded, or a binary
with debug information. This change stops loading kexts and
kernels that do not have an associated dSYM.
rdar://74291888
The patch adds an argument to update test scripts, such as update_cc_test_checks, for replacing a function name matching a regex. This functionality is needed to match generated function signatures that include file hashes. Example:
The function signature for the following function:
`__omp_offloading_50_b84c41e__Z9ftemplateIiET_i_l30_worker`
with `--replace-function-regex "__omp_offloading_[0-9]+_[a-z0-9]+_(.*)"` will become:
`CHECK-LABEL: @{{__omp_offloading_[0-9]+_[a-z0-9]+__Z9ftemplateIiET_i_l30_worker}}(`
Reviewed By: jdoerfert
Differential Revision: https://reviews.llvm.org/D97107
This is a temporary work-around to get our all-annotations-all-flags
stress testing effort run clean. In the long run, we want to provide
efficient implementations of strided loads and stores though
Reviewed By: bixia
Differential Revision: https://reviews.llvm.org/D98563
See PR48593.
Constraints with invalid type parameters were causing a null pointer
dereference.
Signed-off-by: Matheus Izvekov <mizvekov@gmail.com>
Reviewed By: rsmith
Differential Revision: https://reviews.llvm.org/D98095
This patch just makes the error message clearer by reinforcing the cause
was a lack of viable **three-way** comparison function for the
**complete object**.
Signed-off-by: Matheus Izvekov <mizvekov@gmail.com>
Reviewed By: rsmith
Differential Revision: https://reviews.llvm.org/D97990
Stephen Kelly