[lldb] improve the heuristics for checking if a terminal supports Unicode (#171832)
This patch improves the way lldb checks if the terminal it's opened in
(if any) supports Unicode or not.
On POSIX systems, we check if `LANG` contains `UTF-8`.
On Windows, we always return `true` since we use the `WriteToConsoleW`
api.
This is a relanding of https://github.com/llvm/llvm-project/pull/168603.
The tests failed because the bots support Unicode but the tests expect
ASCII. To avoid different outputs depending on the environment the tests
are running in, this patch always force ASCII in the tests.
[X86] combineHorizOpWithShuffle - ensure we handle undef elements from widened shuffle (#172014)
Since #170838 we no longer canonicalise away whole-lane shuffles of
horizontal ops, so we need to better handle cases where widened shuffle
masks might still contain undefs.
Fixes #172010
[MLIR][LLVM] Add pass to update ops with default visibility (#171727)
To support the `-fvisibility=...` option in Flang, we need a pass to
rewrite all the global definitions in the LLVM dialect that have the
default visibility to have the specified visibility. This change adds
such a pass.
Note that I did not add an option for `visiblity=default`; I believe
this makes sense for compiler drivers since users may want to tack an
option on at the end of a compile line to override earlier options, but
I don't think it makes sense for this pass to accept
`visibility=default`--it would just be an early exit IIUC.
[flang][NFC] Strip trailing whitespace from tests (12 of 14)
Only some fortran sourcefiles in flang/test/Semantics have been
modified. The remaining files will be cleaned up in subsequent commits.
[LLDB][NativePDB] Use original struct name when searching for constants (#166845)
We used to search for constants using the name we parsed. For C++, this
would mean using the demangled struct name (from the unique name). This
name is not always equal to the one used for the struct's name by the
compiler. For example:
```
0x105E | LF_STRUCTURE [size = 120, hash = 0xF38F] ``anonymous namespace'::Anonymous<A::B::C<void> >::D`
unique name: `.?AUD@?$Anonymous at U?$C at X@B at A@@@?A0x8C295248@@`
```
We would use the unique name and get to `(anonymous
namespace)::Anonymous<struct A::B::C<void>>::D`. Then, when finding the
constant in the field list, we'd search for `(anonymous
namespace)::Anonymous<struct A::B::C<void>>::D::StaticMember`. This
wouldn't yield any results, because the constant will use the demangled
name as given by the compiler.
With this PR, we use the struct's name as given in the PDB and append
the member name.
[flang][OpenMP] Use StylizedInstance in converted clauses (#171907)
Invent `StylizedInstance` class to store special variables together with
the instantiated expression in omp::clause::Initializer. This will
eliminate the need for visiting the original AST nodes in lowering to
MLIR.
[OpenACC][CIR] 'bind' lowering with identifier (#171749)
The bind clause specifies the name of the function to call on the
device, and takes either a string or identifier(per the standard):
"If the name is specified as an identifier, it is callled as if the name
were specified in the language being compiled. If the name is specified
as a string, the string is used for the procedure name unmodified".
The latter (as a string) is already implemented, this patch implements
the former. Unfortunately, no existing implementation of this in C++
seems to exist. Other languages, the 'name' of a function is sufficient
to identify it (in this case 'bind' can refer to undeclared functions),
so it is possible to figure out what the name should be. In C++ with
overloading (without a discriminator, ala-fortran), a name only names an
infinite overload set.
SO, in order to implement this, I've decided that the 'called as'
(bound) function must have the same signature as the one marked by the
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[llvm-objcopy] Allow -p on COFF targets (#171237)
Binutils allows `-p`, which prevents it from modifying the timestamp.
`llvm-objcopy` already preserves the timestamp in the COFF header, so
the only missing piece is allowing the option in the config manager.
[LLDB][NFC] Remove redundant target/process checks in SBFrame (#153258)
This is a follow up to https://github.com/llvm/llvm-project/pull/152020,
continuing the removal of now-redundant `if(process && target)` checks.
Since this causes a diff in every line of the affected functions, this
commit also uses the opportunity to create some helper functions and
reduce nesting of the affected methods by rewriting all pre-condition
checks as early returns, while remaining strictly NFC.
This has exposed some odd behaviors:
1. `SBFrame::GetVariables` has a variable `num_produced` which is
clearly meant to be incremented on every iteration of the loop but it is
only incremented once, after the loop. So its value is always 0 or
1. The variable now lives in `FetchVariablesUnlessInterrupted`.
2. `SBFrame::GetVariables` has an interruption mechanism for local
variables, but not for "recognized arguments". It's unclear if this is
by design or not, but it is now evident that there is a discrepancy
there.
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ValueTracking: Handle amdgcn.rsq intrinsic in computeKnownFPClass
We have other target intrinsics already in ValueTracking functions,
and no access to TTI.
[MLIR][NVVM] Support for dense and sparse MMA with block scaling (#170566)
This change adds dense and sparse MMA with block scaling intrinsics to
MLIR -> NVVM IR -> NVPTX flow. NVVM and NVPTX implementation is based on
PTX ISA 9.0.
