Passing -minimize to dsymutil prevents the emission of .debug_inlines,
.debug_pubnames, and .debug_pubtypes in favor of the Apple accelerator
tables.
The actual check in the DWARF linker was added in r323655. This patch
simply enables it.
Differential revision: https://reviews.llvm.org/D42688
llvm-svn: 323812
Introduce an extension to support passing linker options to the linker.
These would be ignored by older linkers, but newer linkers which support
this feature would be able to process the linker.
Emit a special discarded section `.linker-option`. The content of this
section is a pair of strings (key, value). The key is a type identifier for
the parameter. This allows for an argument free parameter that will be
processed by the linker with the value being the parameter. As an example,
`lib` identifies a library to be linked against, traditionally the `-l`
argument for Unix-based linkers with the parameter being the library name.
Thanks to James Henderson, Cary Coutant, Rafael Espinolda, Sean Silva
for the valuable discussion on the design of this feature.
llvm-svn: 323783
Summary: This is a simple change to test commit access with.
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D42586
llvm-svn: 323544
Combine expression patterns to form expressions with fewer, simple instructions.
This pass does not modify the CFG.
For example, this pass reduce width of expressions post-dominated by TruncInst
into smaller width when applicable.
It differs from instcombine pass in that it contains pattern optimization that
requires higher complexity than the O(1), thus, it should run fewer times than
instcombine pass.
Differential Revision: https://reviews.llvm.org/D38313
llvm-svn: 323321
Summary:
This patch extends the DISubrange 'count' field to take either a
(signed) constant integer value or a reference to a DILocalVariable
or DIGlobalVariable.
This is patch [1/3] in a series to extend LLVM's DISubrange Metadata
node to support debugging of C99 variable length arrays and vectors with
runtime length like the Scalable Vector Extension for AArch64. It is
also a first step towards representing more complex cases like arrays
in Fortran.
Reviewers: echristo, pcc, aprantl, dexonsmith, clayborg, kristof.beyls, dblaikie
Reviewed By: aprantl
Subscribers: rnk, probinson, fhahn, aemerson, rengolin, JDevlieghere, llvm-commits
Differential Revision: https://reviews.llvm.org/D41695
llvm-svn: 323313
Summary:
This is the first attempt to write down a guideline on adding exception handling support for a target. The content basically bases on the discussion on [1]. If you guys know who is exception handling expert, please add him as the reviewer. Thanks.
[1] http://lists.llvm.org/pipermail/llvm-dev/2018-January/120405.html
Reviewers: t.p.northover, theraven, nemanjai
Reviewed By: theraven
Subscribers: sdardis, llvm-commits
Differential Revision: https://reviews.llvm.org/D42178
llvm-svn: 323311
This clarification was suggested by @efriedma in D41335, which uses this
behavior to inline musttail calls with varargs.
Reviewers: hfinkel, efriedma, rnk
Reviewed By: rnk
Differential Revision: https://reviews.llvm.org/D41861
llvm-svn: 322786
Change symbol values in the stack_size section from being 8 bytes, to being a target dependent size.
Differential Revision: https://reviews.llvm.org/D42108
llvm-svn: 322619
Summary:
The LLVM Bitcode File Format documentation states that all bitstreams
begin with the magic number 'BC', and that generic bitstream analyzer
tools may check for this number in order to determine whether the
stream is a bitstream.
However, in practice:
* Only LLVM IR bitcode begins with 'BC'. Other bitstreams -- Clang
AST files and precompiled headers, Clang serialized diagnostics,
Swift modules -- do not start with 'BC'. A tool that actually checked
for 'BC' would only be able to recognize LLVM IR.
* The `llvm-bcanalyzer`, arguably the most used generic bitstream
analyzer tool, does not check for a magic number 'BC' (except to
determine whether the file is LLVM IR).
Update the bitcode format documentation to make it clear that not all
bitstreams begin with 'BC', and that tools should not rely on that
particular magic number value.
Test Plan:
Build the `docs-llvm-html` target and confirm the changes render in
a Safari web browser.
Reviewers: harlanhaskins, eugenis, mehdi_amini, pcc, angerman
Reviewed By: angerman
Subscribers: angerman, llvm-commits
Differential Revision: https://reviews.llvm.org/D42002
llvm-svn: 322520
This adds some more detail about the PDB container format,
specifically surrounding the layout of the Free Page Map.
Patch by Colden Cullen
Differential Revision: https://reviews.llvm.org/D41825
llvm-svn: 322404
Summary:
In D41919, I missed that there was a *second* step when uploading
diffs via web where the repository should be specified.
Reviewers: asb, probinson
Reviewed By: asb
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D41956
llvm-svn: 322375
Summary:
Docs are out of date now that we have separate repositories for LLVM,
Clang, etc.
Reviewers: asb
Reviewed By: asb
Differential Revision: https://reviews.llvm.org/D41919
llvm-svn: 322290
We are printing / parsing the `frame-setup` MachineInstr flag but not
the `frame-destroy` one.
Differential Revision: https://reviews.llvm.org/D41509
llvm-svn: 322071
Summary:
The documentation has fallen a bit behind, update it with the latest evolution
of the allocator:
- clarify a couple of expectations regarding what is meant to be achieved;
- update the header format;
- document `-fsanitize=scudo`.
Reviewers: alekseyshl, flowerhack
Reviewed By: alekseyshl
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D41670
llvm-svn: 321811
This new page acts as an entry point for (new) contributors to LLVM and
provides information about
* What to contribute
* How to submit a patch
* Where to start to learn more about LLVM's architecture and internals.
This version of the page duplicates some information from the
DeveloperPolicy and Phabricator pages. Subsequent changes should work
towards moving information for new developers to this page, where it
makes sense.
Reviewers: reames, probinson, kristof.beyls, silvas, rengolin, asb
Reviewed By: silvas
Differential Revision: https://reviews.llvm.org/D41665
llvm-svn: 321804
The examples in llvm/Support/Debug.h use `DEBUG(dbgs() << ...)` instead
of `errs()`, so the examples in the Programmer's Manual should match
that.
Patch by: Moritz Sichert <moritz.sichert@googlemail.com>
Differential revision: https://reviews.llvm.org/D41170
llvm-svn: 321444
Work towards the unification of MIR and debug output by refactoring the
interfaces.
Also add support for printing with a null TargetIntrinsicInfo and no
MachineFunction.
llvm-svn: 321111
Work towards the unification of MIR and debug output by refactoring the
interfaces.
Before this patch we printed "<call frame instruction>" in the debug
output.
llvm-svn: 321084
LLVM IR function names which disable mangling start with '\01'
(https://www.llvm.org/docs/LangRef.html#identifiers).
When an identifier like "\01@abc@" gets dumped to MIR, it is quoted, but
only with single quotes.
http://www.yaml.org/spec/1.2/spec.html#id2770814:
"The allowed character range explicitly excludes the C0 control block
allowed), the surrogate block #xD800-#xDFFF, #xFFFE, and #xFFFF."
http://www.yaml.org/spec/1.2/spec.html#id2776092:
"All non-printable characters must be escaped.
[...]
Note that escape sequences are only interpreted in double-quoted scalars."
This patch adds support for printing escaped non-printable characters
between double quotes if needed.
Should also fix PR31743.
Differential Revision: https://reviews.llvm.org/D41290
llvm-svn: 320996
Work towards the unification of MIR and debug output by printing
`<mcsymbol sym>` instead of `<MCSym=sym>`.
Only debug syntax is affected.
llvm-svn: 320685
Work towards the unification of MIR and debug output by printing `target-index(target-specific) + 8` instead of `<ti#0+8>` and `target-index(target-specific) + 8` instead of `<ti#0-8>`.
Only debug syntax is affected.
llvm-svn: 320565
Work towards the unification of MIR and debug output by printing
`%const.0 + 8` instead of `<cp#0+8>` and `%const.0 - 8` instead of
`<cp#0-8>`.
Only debug syntax is affected.
Differential Revision: https://reviews.llvm.org/D41116
llvm-svn: 320564
This change makes XRay print the log file output only when the verbosity
level is higher than 0. It reduces the log spam in the default case when
we want XRay running silently, except when there are actual
fatal/serious errors.
We also update the documentation to show how to get the information
after the change to the default behaviour.
llvm-svn: 320550
Summary:
Add isRenamable() predicate to MachineOperand. This predicate can be
used by machine passes after register allocation to determine whether it
is safe to rename a given register operand. Register operands that
aren't marked as renamable may be required to be assigned their current
register to satisfy constraints that are not captured by the machine
IR (e.g. ABI or ISA constraints).
Reviewers: qcolombet, MatzeB, hfinkel
Subscribers: nemanjai, mcrosier, javed.absar, llvm-commits
Differential Revision: https://reviews.llvm.org/D39400
llvm-svn: 320503
