No widening decisions will be computed for instructions outside the
loop. Do not try to get a widening decision. The load/store will be just
a scalar load, so treating at as normal should be fine I think.
Fixes PR46950.
Reviewed By: dmgreen
Differential Revision: https://reviews.llvm.org/D85087
This revision adds a transformation and a pattern that rewrites a "maybe masked" `vector.transfer_read %view[...], %pad `into a pattern resembling:
```
%1:3 = scf.if (%inBounds) {
scf.yield %view : memref<A...>, index, index
} else {
%2 = vector.transfer_read %view[...], %pad : memref<A...>, vector<...>
%3 = vector.type_cast %extra_alloc : memref<...> to
memref<vector<...>> store %2, %3[] : memref<vector<...>> %4 =
memref_cast %extra_alloc: memref<B...> to memref<A...> scf.yield %4 :
memref<A...>, index, index
}
%res= vector.transfer_read %1#0[%1#1, %1#2] {masked = [false ... false]}
```
where `extra_alloc` is a top of the function alloca'ed buffer of one vector.
This rewrite makes it possible to realize the "always full tile" abstraction where vector.transfer_read operations are guaranteed to read from a padded full buffer.
The extra work only occurs on the boundary tiles.
Differential Revision: https://reviews.llvm.org/D84631
This patch makes it possible to handle nonnull attribute violation at callsites in AAUndefinedBehavior.
If null pointer is passed to callee at a callsite and the corresponding argument of callee has nonnull attribute, the behavior of the callee is undefined.
In this patch, violations of argument nonnull attributes is only handled.
But violations of returned nonnull attributes can be handled and I will implement that in a follow-up patch.
Reviewed By: jdoerfert
Differential Revision: https://reviews.llvm.org/D84733
The patch restricts DIEDelta::SizeOf() to accept only DWARF forms that
are actually used in the LLVM codebase. This should make the use of the
class more explicit and help to avoid issues similar to fixed in D83958
and D84094.
Differential Revision: https://reviews.llvm.org/D84095
DIELabel can emit only 32- or 64-bit values, while it was created in
some places with DW_FORM_udata, which implies emitting uleb128.
Nevertheless, these places also expected to emit U32 or U64, but just
used a misleading DWARF form. The patch updates those places to use more
appropriate DWARF forms and restricts DIELabel::SizeOf() to accept only
forms that are actually used in the LLVM codebase.
Differential Revision: https://reviews.llvm.org/D84094
DIELocList is used with a limited number of DWARF forms, see the only
place where it is instantiated, DwarfCompileUnit::addLocationList().
The patch marks the unexpected execution path in DIELocList::SizeOf()
as unreachable, to reduce ambiguity.
Differential Revision: https://reviews.llvm.org/D84092
Before this patch the `ninja check-unwind` won't rebuild the unwind library.
Reviewed By: jroelofs
Differential Revision: https://reviews.llvm.org/D85004
This patch handles loopControl and selectionControl in parsing and
printing. In order to reuse the functionality, and avoid handling cases when
`{` of the region is parsed as a dictionary attribute, `control` keyword was
introduced.`None` is a default control attribute. This functionality can be
later extended to `spv.func`.
Also, loopControl and selectionControl can now be (de)serialized.
Reviewed By: antiagainst
Differential Revision: https://reviews.llvm.org/D84175
This makes clang default to -Wa,-mrelax-relocations=yes, which enables
R_386_GOT32X (GNU as enables it regardless of -mrelax-relocations=) and
R_X86_64_[REX_]GOTPCRELX in MC. The produced object files require GNU ld>=2.26
to link. binutils 2.26 is considered a very old release today.
Provides AMDGCN and NVPTX specific specialization of getGPUWarpSize,
getGPUThreadID, and getGPUNumThreads methods. Adds tests for AMDGCN
codegen for these methods in generic and simd modes. Also changes the
precondition in InitTempAlloca to be slightly more permissive. Useful for
AMDGCN OpenMP codegen where allocas are created with a cast to an
address space.
Reviewed By: ABataev
Differential Revision: https://reviews.llvm.org/D84260
This is a refactor patch to prepare for adding the support for strict-fsetcc
in PowerPC backend. We want to move their definition into a uniform way so that,
we could add the strict node easier.
Reviewed By: shchenz
Differential Revision: https://reviews.llvm.org/D81712
This drops a GNU gold workaround and reverts the revert commit rL366708.
Before binutils 2.34, gold -O2 and above did not correctly handle R_386_GOTOFF to
SHF_MERGE|SHF_STRINGS sections: https://sourceware.org/bugzilla/show_bug.cgi?id=16794
From the original review:
... it reduced the size of a big ARM-32 debug image by 33%. It contained ~68M
of relocations symbols out of total ~71M symbols (96% of symbols table was
generated for relocations with symbol).
-Wl,-O2 (and -Wl,-O3) is so rare that we should just lower the
optimization level for LLVM_LINKER_IS_GOLD rather than pessimizing all users.
ipconstprop is going to get removed and checking opt with specific
passes makes the tests more fragile.
The tests retain the important checks that !callback metadata is created
correctly.
I have made the DW_FORM_ref4 relative. One could also use relocated
DW_FORM_ref_addr instead.
Tested with:
echo 'void f(){}'|clang -o 1.o -c -Wall -g -x c -;./bin/clang -o 1 1.o ../llvm-monorepo/lldb/test/Shell/SymbolFile/DWARF/DW_TAG_GNU_call_site-DW_AT_low_pc.s;./bin/lldb --no-lldbinit ./1 -o r -o 'p p' -o exit
If the upper bits of the __builtin_parity idiom are known to be
0 we were previously emitting an xor with 0 to get the parity flag.
But we can use cmp/test instead which may expose opportunities for
load folding or combining an AND.
As discussed on D81500, this adds a more general ElementCount variant of the build helper and converts the (non-scalable) unsigned NumElts variant to use it internally.
For AMDGPU, vectors with elements < 32 bits should be indexed in
32-bit elements and the desired bits extracted from there. For
elements > 64-bits, these should be reduce to 64/32 elements to enable
the normal dynamic indexing paths.
In the dynamic index cases, this produces shorter code most of the
time. This does immediately regress the constant index cases, but this
should be fixed once we have the most basic of shift combines.
The element size > 64 case is pretty much ported from the exisiting
DAG implementation for extract element promote. The increasing element
size case is new.
Try to be more consistent with the SDLoc param in the TargetLowering methods.
This also exposes an issue where we were passing a SDNode as a SDLoc, relying on the implicit SDLoc(SDNode) constructor.
This is a split patch of D80991.
This patch introduces AAPotentialValues and its interface only.
For more detail of AAPotentialValues abstract attribute, see the original patch.
Reviewed By: jdoerfert
Differential Revision: https://reviews.llvm.org/D83283
BUG_REPORT_URL is currently used both in LLVM and in Clang but declared
only in the latter. This means that it's missing in standalone clang
builds and the driver ends up outputting:
PLEASE submit a bug report to and include [...]
(note the missing URL)
To fix this, include LLVM_PACKAGE_BUGREPORT in LLVMConfig.cmake
(similarly to how we pass PACKAGE_VERSION) and use it to fill
BUG_REPORT_URL when building clang standalone.
Differential Revision: https://reviews.llvm.org/D84987
Florian Hahn