Add powerpcle support to clang.
For FreeBSD, assume a freestanding environment for now, as we only need it in the first place to build loader, which runs in the OpenFirmware environment instead of the FreeBSD environment.
For Linux, recognize glibc and musl environments to match current usage in Void Linux PPC.
Adjust driver to match current binutils behavior regarding machine naming.
Adjust and expand tests.
Reviewed By: MaskRay
Differential Revision: https://reviews.llvm.org/D93919
The idea is that the CC1 default for ELF should set dso_local on default
visibility external linkage definitions in the default -mrelocation-model pic
mode (-fpic/-fPIC) to match COFF/Mach-O and make output IR similar.
The refactoring is made available by 2820a2ca3a.
Currently only x86 supports local aliases. We move the decision to the driver.
There are three CC1 states:
* -fsemantic-interposition: make some linkages interposable and make default visibility external linkage definitions dso_preemptable.
* (default): selected if the target supports .Lfoo$local: make default visibility external linkage definitions dso_local
* -fhalf-no-semantic-interposition: if neither option is set or the target does not support .Lfoo$local: like -fno-semantic-interposition but local aliases are not used. So references can be interposed if not optimized out.
Add -fhalf-no-semantic-interposition to a few tests using the half-based semantic interposition behavior.
Add support for stdin to SourceManager and FileManager. Adds
FileManager::getSTDIN, which adds a FileEntryRef for `<stdin>` and reads
the MemoryBuffer, which is stored as `FileEntry::Content`.
Eventually the other buffers in `ContentCache` will sink to here as well
-- we probably usually want to load/save a MemoryBuffer eagerly -- but
it's happening early for stdin to get rid of
CompilerInstance::InitializeSourceManager's final call to
`SourceManager::overrideFileContents`.
clang/test/CXX/modules-ts/dcl.dcl/dcl.module/dcl.module.export/p1.cpp
relies on building a module from stdin; supporting that requires setting
ContentCache::BufferOverridden.
Differential Revision: https://reviews.llvm.org/D93148
Handle named pipes natively in SourceManager and FileManager, removing a
call to `SourceManager::overrideFileContents` in
`CompilerInstance::InitializeSourceManager` (removing a blocker for
sinking the content cache to FileManager (which will incidently sink
this new named pipe logic with it)).
SourceManager usually checks if the file entry's size matches the
eventually loaded buffer, but that's now skipped for named pipes since
the `stat` won't reflect the full size. Since we can't trust
`ContentsEntry->getSize()`, we also need shift the check for files that
are too large until after the buffer is loaded... and load the buffer
immediately in `createFileID` so that no client gets a bad value from
`ContentCache::getSize`. `FileManager::getBufferForFile` also needs to
treat these files as volatile when loading the buffer.
Native support in SourceManager / FileManager means that named pipes can
also be `#include`d, and clang/test/Misc/dev-fd-fs.c was expanded to
check for that.
This is a new version of 3b18a594c7, which
was reverted in b346322019 since it was
missing the `SourceManager` changes.
Differential Revision: https://reviews.llvm.org/D92531
This should've been in 7ad666798f but wasn't.
Squashes these twoc commits:
Revert "[clang][cli] Let denormalizer decide how to render the option based on the option class"
This reverts commit 70410a2649.
Revert "[clang][cli] Implement `getAllArgValues` marshalling"
This reverts commit 63a24816f5.
741978d727 made clang produce output that's 2x as large at least in
sanitizer builds. https://reviews.llvm.org/D83892#2470185 has a
standalone repro.
This reverts the following commits:
Revert "[clang][cli] Port CodeGenOpts simple string flags to new option parsing system"
This reverts commit 95d3cc67ca.
Revert "[clang][cli] Port LangOpts simple string based options to new option parsing system"
This reverts commit aec2991d08.
Revert "[clang][cli] Streamline MarshallingInfoFlag description"
This reverts commit 27b7d64688.
Revert "[clang][cli] Port LangOpts option flags to new option parsing system"
This reverts commit 383778e217.
Revert "[clang][cli] Port CodeGen option flags to new option parsing system"
This reverts commit 741978d727.
Change `makeFlagToValueNormalizer` so that one specialization converts all integral/enum arguments into `uint64_t` and forwards them to the more generic version.
This makes it easy to replace the custom `FlagToValueNormalizer` struct with a lambda, which is the common approach in other (de)normalizers.
Finally, drop custom `is_int_convertbile` in favor of `llvm::is_integral_or_enum`.
Reviewed By: dexonsmith
Differential Revision: https://reviews.llvm.org/D93628
`LangOptions::SYCLVersion` can only have two values. This patch introduces an enum that allows us to reduce the member size from 32 bits to 1 bit.
Consequently, this also makes marshalling of this option fit into our model for enums: D84674.
Reviewed By: bader
Differential Revision: https://reviews.llvm.org/D93540
Before this patch, you needed to use `AutoNormalizeEnumJoined` whenever you wanted to **de**normalize joined enum.
Besides the naming confusion, this means the fact the option is joined is specified in two places: in the normalization multiclass and in the `Joined<["-"], ...>` multiclass.
This patch makes this work automatically, taking into account the `OptionClass` of options.
Also, the enum denormalizer now just looks up the spelling of the present enum case in a table and forwards it to the string denormalizer.
I also added more tests that exercise this.
Reviewed By: dexonsmith
Original patch by Daniel Grumberg.
Differential Revision: https://reviews.llvm.org/D84189
If both flags created through BoolOption are CC1Option and the keypath has a non-default or non-implied value, the denormalizer gets called twice. If the denormalizer has the ability to generate both flags, we can end up generating the same flag twice.
Reviewed By: dexonsmith, Bigcheese
Differential Revision: https://reviews.llvm.org/D93094
We cannot be sure whether a flag is CC1Option inside the definition of `BoolOption`. Take the example below:
```
let Flags = [CC1Option] in {
defm xxx : BoolOption<...>;
}
```
where TableGen applies `Flags = [CC1Option]` to the `xxx` and `no_xxx` records **after** they have been is fully declared by `BoolOption`.
For the refactored `-f[no-]debug-pass-manager` flags (see the diff), this means `BoolOption` never adds any marshalling info, as it doesn't see either of the flags as `CC1Option`.
For that reason, we should defensively append the marshalling information to both flags inside `BoolOption`. Now the check for `CC1Option` needs to happen later, in the parsing macro, when all TableGen logic has been resolved.
However, for some flags defined through `BoolOption`, we can run into issues:
```
// Options.td
def fenable_xxx : /* ... */;
// Both flags are CC1Option, the first is implied.
defm xxx : BoolOption<"xxx,
"Opts.Xxx", DefaultsToFalse,
ChangedBy<PosFlag, [CC1Option], "", [fenable_xxx]>,
ResetBy<NegFlag, [CC1Option]>>;
```
When parsing `clang -cc1 -fenable-xxx`:
* we run parsing for `PosFlag`:
* set `Opts.Xxx` to default `false`,
* discover `PosFlag` is implied by `-fenable-xxx`: set `Opts.Xxx` to `true`,
* don't see `-fxxx` on command line: do nothing,
* we run parsing for `NegFlag`:
* set `Opts.Xxx` to default `false`,
* discover `NegFlag` cannot be implied: do nothing,
* don't see `-fno-xxx` on command line: do nothing.
Now we ended up with `Opts.Xxx` set to `false` instead of `true`. For this reason, we need to ensure to append the same `ImpliedByAnyOf` instance to both flags.
This means both parsing runs now behave identically (they set the same default value, run the same "implied by" check, and call `makeBooleanOptionNormalizer` that already has information on both flags, so it returns the same value in both calls).
The solution works well, but what might be confusing is this: you have defined a flag **A** that is not `CC1Option`, but can be implied by another flag **B** that is `CC1Option`:
* if **A** is defined manually, it will never get implied, as the code never runs
```
def no_signed_zeros : Flag<["-"], "fno-signed-zeros">, Group<f_Group>, Flags<[]>,
MarshallingInfoFlag<"LangOpts->NoSignedZero">, ImpliedByAnyOf<[menable_unsafe_fp_math]>;
```
* if **A** is defined by `BoolOption`, it could get implied, as the code is run by its `CC1Option` counterpart:
```
defm signed_zeros : BoolOption<"signed-zeros",
"LangOpts->NoSignedZero", DefaultsToFalse,
ChangedBy<NegFlag, [], "Allow optimizations that ignore the sign of floating point zeros",
[cl_no_signed_zeros, menable_unsafe_fp_math]>,
ResetBy<PosFlag, [CC1Option]>, "f">, Group<f_Group>;
```
This is a surprising inconsistency.
One solution might be to somehow propagate the final `Flags` of the implied flag in `ImpliedByAnyOf` and check whether it has `CC1Option` in the parsing macro. However, I think it doesn't make sense to spend time thinking about a corner case that won't come up in real code.
An observation: it is unfortunate that the marshalling information is a part of the flag definition. If we represented it in a separate structure, we could avoid the "double parsing" problem by having a single source of truth. This would require a lot of additional work though.
Note: the original patch missed the `CC1Option` check in the parsing macro, making my reasoning here incomplete. Moreover, it contained a change to denormalization that wasn't necessarily related to these changes, so I've extracted that to a follow-up patch: D93094.
Reviewed By: dexonsmith, Bigcheese
Differential Revision: https://reviews.llvm.org/D93008
Fix the comment in front of `compileModuleImpl`'s call to
`CompilerInstance::clearOutputFiles`. The purpose of this call is to
delete any stray temporary files after the module generation thread
crashes.
The comment is from f545f67de3, and
was associated with manually deleting a generated module map. Then
13afbf42d8 added this `clearOutputFiles`
call between the comment and the code it referenced. Finally,
1f76c4e810 started sending the generated
module map directly to the SourceManager instead of putting it on disk,
deleting the call that the comment referenced.
No functionality change.
This patch enables marshalling of the exception model options while enforcing their mutual exclusivity. The clang driver interface remains the same, this only affects the cc1 command line.
Depends on D93215.
Reviewed By: dexonsmith
Differential Revision: https://reviews.llvm.org/D93216
This squashes multiple members in LangOptions into one. This is leveraged in a follow-up patch that implements marshalling of related command-line options.
Depends on D93214.
Reviewed By: dexonsmith
Differential Revision: https://reviews.llvm.org/D93215
This abstracts away the members that are being replaced in a follow-up patch.
Depends on D83979.
Reviewed By: dexonsmith
Differential Revision: https://reviews.llvm.org/D93214
Migrate `HeaderSearch::LoadedModuleMaps` and a number of APIs over to
`FileEntryRef`. This should have no functionality change. Note that two
`FileEntryRef`s hash the same if they point at the same `FileEntry`.
Differential Revision: https://reviews.llvm.org/D92975
This introduces more flexible multiclass for declaring two flags controlling the same boolean keypath.
Compared to existing Opt{In,Out}FFlag multiclasses, the new syntax makes it easier to read option declarations and reason about the keypath.
This also makes specifying common properties of both flags possible.
I'm open to suggestions on the class names. Not 100% sure the benefits are worth the added complexity.
Depends on D92774.
Reviewed By: dexonsmith
Differential Revision: https://reviews.llvm.org/D92775
The new PM is considered stable and many downstream groups have adopted it (some
have adopted it for more than two years). Add -f[no-]legacy-pass-manager to reflect the
fact that it is no longer experimental and the legacy pass manager is something we strive to retire.
In the future, when the legacy PM eventually goes away,
-fno-experimental-new-pass-manager and -flegacy-pass-manager will be removed.
This patch also changes -f[no-]legacy-pass-manager to pass `-plugin-opt={new,legacy}-pass-manager` to the linker (supported by both ld.lld and LLVMgold.so) when -flto/-flto=thin is specified
Reviewed By: aeubanks, rsmith
Differential Revision: https://reviews.llvm.org/D92915
Use `FileManager::getVirtualFileRef` to get the virtual file for stdin,
and add an overload of `SourceManager::overrideFileContents` that takes
a `FileEntryRef`, migrating `CompilerInstance::InitializeSourceManager`.
Differential Revision: https://reviews.llvm.org/D92680
Add a `FileEntryRef` overload of `SourceManager::translateFile`, and
migrate `ParseDirective` in VerifyDiagnosticConsumer.cpp to use it and
the corresponding overload of `createFileID`.
No functionality change here.
Differential Revision: https://reviews.llvm.org/D92699
Clarify the logic for using the preamble (and overriding the main file
buffer) in `ASTUnit::CodeComplete` by factoring out a couple of lambdas
(`getUniqueID` and `hasSameUniqueID`). While refactoring the logic,
hoist the check for `Line > 1` and locally check if the filenames are
equal (both to avoid unnecessary `stat` calls) and skip copying out the
filenames to `std::string`.
Besides fewer calls to `stat`, there's no functionality change here.
Differential Revision: https://reviews.llvm.org/D91296
Currently, -ftime-report + new pass manager emits one line of report for each
pass run. This potentially causes huge output text especially with regular LTO
or large single file (Obeserved in private tests and was reported in D51276).
The behaviour of -ftime-report + legacy pass manager is
emitting one line of report for each pass object which has relatively reasonable
text output size. This patch adds a flag `-ftime-report=` to control time report
aggregation for new pass manager.
The flag is for new pass manager only. Using it with legacy pass manager gives
an error. It is a driver and cc1 flag. `per-pass` is the new default so
`-ftime-report` is aliased to `-ftime-report=per-pass`. Before this patch,
functionality-wise `-ftime-report` is aliased to `-ftime-report=per-pass-run`.
* Adds an boolean variable TimePassesHandler::PerRun to control per-pass vs per-pass-run.
* Adds a new clang CodeGen flag CodeGenOptions::TimePassesPerRun to work with the existing CodeGenOptions::TimePasses.
* Remove FrontendOptions::ShowTimers, its uses are replaced by the existing CodeGenOptions::TimePasses.
* Remove FrontendTimesIsEnabled (It was introduced in D45619 which was largely reverted.)
Differential Revision: https://reviews.llvm.org/D92436
Use lambdas with captures to replace the redundant infrastructure for marshalling of two boolean flags that control the same keypath.
Reviewed By: dexonsmith
Differential Revision: https://reviews.llvm.org/D92773
`ParseDirective` in VerifyDiagnosticConsumer.cpp is already calling
`translateFile`, so use the `FileID` returned by that to call
`translateLineCol` instead of using the more heavyweight
`translateFileLineCol`.
No functionality change here.
Update all the users of `AlignedCharArrayUnion` to stop peeking inside
(to look at `buffer`) so that a follow-up patch can replace it with an
alias to `std::aligned_union_t`.
This was reviewed as part of https://reviews.llvm.org/D92512, but I'm
splitting this bit out to commit first to reduce churn in case the
change to `AlignedCharArrayUnion` needs to be reverted for some
unexpected reason.
`ASTUnit::Parse` sets up the `FileManager` earlier in the same function,
ensuring `ASTUnit::getFileManager()` matches `Clang->getFileManager()`.
Remove the later call to `setFileManager(getFileManager())` since it
does nothing.
Differential Revision: https://reviews.llvm.org/D90888
This reverts commit 3b18a594c7, since
apparently this doesn't work everywhere. E.g.,
clang-x86_64-debian-fast/3889
(http://lab.llvm.org:8011/#/builders/109/builds/3889) gives me:
```
+ : 'RUN: at line 8'
+ /b/1/clang-x86_64-debian-fast/llvm.obj/bin/clang -x c /dev/fd/0 -E
+ cat /b/1/clang-x86_64-debian-fast/llvm.src/clang/test/Misc/dev-fd-fs.c
fatal error: file '/dev/fd/0' modified since it was first processed
1 error generated.
```
Remove compilicated logic from CompilerInstance::InitializeSourceManager
to deal with named pipes, updating FileManager::getBufferForFile to
handle it in a more straightforward way. The existing test at
clang/test/Misc/dev-fd-fs.c covers the new behaviour (just like it did
the old behaviour).
Differential Revision: https://reviews.llvm.org/D90733
Thorsten Schütt