This patch addresses the removal of register size information done in
commit c8b782c.
Without this change, there is no viable option to get register size
information outside libTarget. We need this information to run
analysis that know the register size from the MC layer, used by
BOLT.
Discussion D50285 and D47199.
Reviewed By: kparzysz
Differential Revision: https://reviews.llvm.org/D97891
Follow up from D92955 and D83636. This patch makes the base cpp files
OMP.cpp and ACC.cpp normal files and they now include the XXX.inc file
generated by tablegen. This reduces the number of file generated by the
DirectiveEmitter backend and makes it closer to the proposal in D83636.
Reviewed By: Meinersbur
Differential Revision: https://reviews.llvm.org/D93560
Quality of progress bar and ETA in lit has always bothered me.
For example, given `./bin/llvm-lit /repositories/llvm-project/clang/test/CodeGen* -sv`
at 1%, it says it will take 10 more minutes,
at 25%, it says it will take 1.25 more minutes,
at 50%, it says it will take 30 more seconds,
and in the end finishes with `Testing Time: 39.49s`. That's rather wildly unprecise.
Currently, it assumes that every single test will take the same amount of time to run on average.
This is is a somewhat reasonable approximation overall, but it is quite clearly imprecise,
especially in the beginning.
But, we can do better now, after D98179! We now know how long the tests took to run last time.
So we can build a better ETA predictor, by accumulating the time spent already,
the time that will be spent on the tests for which we know the previous time,
and for the test for which we don't have previous time, again use the average time
over the tests for which we know current or previous run time.
It would be better to use median, but i'm wary of the cost that may incur.
Now, on **first** run of `./bin/llvm-lit /repositories/llvm-project/clang/test/CodeGen* -sv`
at 10%, it says it will take 30 seconds,
at 25%, it says it will take 50 more seconds,
at 50%, it says it will take 27 more seconds,
and in the end finishes with `Testing Time: 41.64s`. That's pretty reasonable.
And on second run of `./bin/llvm-lit /repositories/llvm-project/clang/test/CodeGen* -sv`
at 1%, it says it will take 1 minutes,
at 25%, it says it will take 30 more seconds,
at 50%, it says it will take 19 more seconds,
and in the end finishes with `Testing Time: 39.49s`. That's amazing i think!
I think people will love this :)
Reviewed By: yln
Differential Revision: https://reviews.llvm.org/D99073
Lookup tables generate non PIC-friendly code, which requires dynamic relocation as described in:
https://bugs.llvm.org/show_bug.cgi?id=45244
This patch adds a new pass that converts lookup tables to relative lookup tables to make them PIC-friendly.
Differential Revision: https://reviews.llvm.org/D94355
Even though we have read the times before,
we intentionally forget about it for performance reasons.
But that means we also forget all the times for the tests
that weren't executed this time. This is mildly inconvenient.
So, when recording the new times, first re-read the old times,
and update times for the tests that were executed,
thus preserving all original times, too.
I.e. when you first run lit on a directory, and then on a single test,
the timing knowledge about anything else other than that single test
is lost. This isn't right.
All of these depend on the order of tests, so if one runs them twice,
the tests within them will naturally be reordered
using the previous run times, which breaks them.
If lit was run on a directory that contained no suites,
then naturally suite[0] will not be there,
and that line would cause python warnings.
So just predicate it with a check that it is there in the first place.
Pass no longer handles skips. Pass now removes unnecessary
unconditional branches and lowers early termination branches.
Hence rename to SILateBranchLowering.
Move code to handle returns to epilog from SIPreEmitPeephole
into SILateBranchLowering. This means SIPreEmitPeephole only
contains optional optimisations, and all required transforms
are in SILateBranchLowering.
Reviewed By: arsenm
Differential Revision: https://reviews.llvm.org/D98915
SIRemoveShortExecBranches is an optimisation so fits well in the
context of SIPreEmitPeephole.
Test changes relate to early termination from kills which have now
been lowered prior to considering branches for removal.
As these use s_cbranch the execz skips are now retained instead.
Currently either behaviour is valid as kill with EXEC=0 is a nop;
however, if early termination is used differently in future then
the new behaviour is the correct one.
Reviewed By: foad
Differential Revision: https://reviews.llvm.org/D98917
- D96404 defaulted to libunwind which isn't provided by NDK r21
(or r22), so specify -rtlib=libgcc on non-arm32.
- D97993 means that we need to use --gcc-toolchain instead of -B
to let the driver find libgcc.
This patch consists of the initial changes to help distinguish between text and binary content correctly on z/OS. I would like to get feedback from Windows users on setting OF_None for all ToolOutputFiles. This seems to have been done as an optimization to prevent CRLF translation on Windows in the past.
Reviewed By: zibi
Differential Revision: https://reviews.llvm.org/D97785
This reverts commit d09adfd3993cbc1043b4d20232bce8bd774232cc.
That commit caused failures in
clang-tidy/infrastructure/validate-check-names.cpp on windows
buildbots.
That change exposed a surprising issue, not directly related to
this change in itself, but in how TestRunner quotes command line
arguments that later are going to be interpreted by a msys based
tool (like grep.exe, when provided by Git for Windows). This
worked accidentally before, when grep was invoked via not.exe
which took a more conservative approach to windows argument quoting.
When running in a Windows Container, the Git for Windows Unix tools
(C:\Program Files\Git\usr\bin) just hang if this variable isn't
passed through.
Currently, running the LLVM/clang tests in a Windows Container fails
if that directory is added to the path, but succeeds after this change.
(After this change, the previously used GnuWin tools can be left out
entirely, too, as lit automatically picks up the Git for Windows tools
if necessary.)
Differential Revision: https://reviews.llvm.org/D98858
Keep running "not --crash" via the external "not" executable, but
for plain negations, and for cases that use the shell "!" operator,
just skip that argument and invert the return code.
The libcxx tests only use the shell operator "!" for negations,
never the "not" executable, because libcxx tests can be run without
having a fully built llvm tree available providing the "not"
executable.
This allows using the internal shell for libcxx tests.
Differential Revision: https://reviews.llvm.org/D98859
A more general name might be match-time error propagation. That is,
it's conceivable we'll one day have non-numeric errors that require
the handling fixed by this patch.
Without this patch, FileCheck behaves as follows:
```
$ cat check
CHECK-NOT: [[#0x8000000000000000+0x8000000000000000]]
$ FileCheck -vv -dump-input=never check < input
check:1:54: remark: implicit EOF: expected string found in input
CHECK-NOT: [[#0x8000000000000000+0x8000000000000000]]
^
<stdin>:2:1: note: found here
^
check:1:15: error: unable to substitute variable or numeric expression: overflow error
CHECK-NOT: [[#0x8000000000000000+0x8000000000000000]]
^
$ echo $?
0
```
Notice that the exit status is 0 even though there's an error.
Moreover, FileCheck doesn't print the error diagnostic unless both
`-dump-input=never` and `-vv` are specified.
The same problem occurs when `CHECK-NOT` does have a match but a
capture fails due to overflow: exit status is 0, and no diagnostic is
printed unless both `-dump-input=never` and `-vv` are specified. The
usefulness of capturing from `CHECK-NOT` is questionable, but this
case should certainly produce an error.
With this patch, FileCheck always includes the error diagnostic and
has non-zero exit status for the above examples. It's conceivable
that this change will cause some existing tests to fail, but my
assumption is that they should fail. Moreover, with nearly every
project enabled, this patch didn't produce additional `check-all`
failures for me.
This patch also extends input dumps to include such numeric error
diagnostics for both expected and excluded patterns.
As noted in fixmes in some of the tests added by this patch, this
patch worsens an existing issue with redundant diagnostics. I'll fix
that bug in a subsequent patch.
Reviewed By: thopre, jhenderson
Differential Revision: https://reviews.llvm.org/D98086
The "path" recorded for timing purposes is only used as a key into a dictionary. It is never used as an actual path to a filesystem API, therefore we should use '/' as the canonical separator so that Unix and Windows machines can share timing data. This also ensures that the lit testing works across platforms.
Reviewed By: jhenderson, jmorse
Differential Revision: https://reviews.llvm.org/D98767
This patch reduces the time taken for clang to compile the generated
disassembler for an out-of-tree target with InsnType bigger than 64 bits
from 4m30s to 48s.
D67686 did a similar thing for CodeEmitterGen.
The idea is to tweak the API of the APInt-like InsnType class so that
we don't need so many temporary InsnTypes. This takes advantage of the
rule stated in D52100 that currently "no string of bits extracted
from the encoding may exceeed 64-bits", so we can use uint64_t for some
temporaries.
D52100 goes on to say that "fields are still permitted to exceed 64-bits
so long as they aren't one contiguous string of bits". This patch breaks
that by always using a "uint64_t tmp" in the generated decodeToMCInst,
but it should be easy to fix in FilterChooser::emitBinaryParser by
choosing to use a different type of tmp based on the known total field
width.
Differential Revision: https://reviews.llvm.org/D98046
1. Generate the mapping for clauses between the parser class and the
corresponding clause kind for OpenMP and OpenACC using tablegen.
2. Add a common function to get the OmpObjectList from the OpenMP
clauses to avoid repetition of code.
Reviewed by: Kiranchandramohan @kiranchandramohan , Valentin Clement @clementval
Differential Revision: https://reviews.llvm.org/D98603
The test file has embedded slashes. This is fine for normal users that
are just recording and reordering paths, but not great when the trace
data is committed back to a repository that should work on both Unix and
Windows.
When GlobalISelEmitter::emitCxxPredicateFns emitted code for MI
predicates it used "PatFrag" when searching for definitions. With
this patch it will search for all "PatFrags" instead. Since PatFrag
derives from PatFrags the difference is that we now include all
definitions using PatFrags directly as well. Thus making it possible
to use GISelPredicateCode together with a PatFrags definition.
It might be noted that the matcher code was emitted also for PatFrags
in the past. But then one ended up with errors since the custom code
in testMIPredicate_MI was missing.
Differential Revision: https://reviews.llvm.org/D98486
Lit as it exists today has three hacks that allow users to run tests earlier:
1) An entire test suite can set the `is_early` boolean.
2) A very recently introduced "early_tests" feature.
3) The `--incremental` flag forces failing tests to run first.
All of these approaches have problems.
1) The `is_early` feature was until very recently undocumented. Nevertheless it still lacks testing and is a imprecise way of optimizing test starting times.
2) The `early_tests` feature requires manual updates and doesn't scale.
3) `--incremental` is undocumented, untested, and it requires modifying the *source* file system by "touching" the file. This "touch" based approach is arguably a hack because it confuses editors (because it looks like the test was modified behind the back of the editor) and "touching" the test source file doesn't work if the test suite is read only from the perspective of `lit` (via advanced filesystem/build tricks).
This patch attempts to simplify and address all of the above problems.
This patch formalizes, documents, tests, and defaults lit to recording the execution time of tests and then reordering all tests during the next execution. By reordering the tests, high core count machines run faster, sometimes significantly so.
This patch also always runs failing tests first, which is a positive user experience win for those that didn't know about the hidden `--incremental` flag.
Finally, if users want, they can _optionally_ commit the test timing data (or a subset thereof) back to the repository to accelerate bots and first-time runs of the test suite.
Reviewed By: jhenderson, yln
Differential Revision: https://reviews.llvm.org/D98179
Visual Studios implementation of the C++ Standard Library does not use strerror to produce a message for std::error_code unlike other standard libraries such as libstdc++ or libc++ that might be used.
This patch adds a cmake script that through running a C++ program gets the error messages for the POSIX error codes and passes them onto lit through an optional config parameter.
If the config parameter is not set, or getting the messages failed, due to say a cross compiling configuration without an emulator, it will fall back to using pythons strerror functions.
Differential Revision: https://reviews.llvm.org/D98278
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
The JSON file can also be used to generate bindings for other languages,
such as Python and Javascript:
https://steveire.wordpress.com/2019/04/30/the-future-of-ast-matching
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.
Also in this version, the platforms/cmake configurations are excluded as
much as possible so that support can be added iteratively. Currently a
break on any platform causes a revert of the entire feature. This way,
the `OR WIN32` can be removed in a future commit and if it breaks the
buildbots, only that commit gets reverted, making the entire process
easier to manage.
Differential Revision: https://reviews.llvm.org/D93164
