Summary:
This adds a new -no-weak flag to nm to hide weak symbols in its output.
This also adds a -W alias for this which is analogous to -U.
Patch by Keith Smiley
Reviewers: kastiglione, enderby, compnerd
Reviewed By: kastiglione
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D48751
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@336126 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This patch introduce new intrinsic -
strip.invariant.group that was described in the
RFC: Devirtualization v2
Reviewers: rsmith, hfinkel, nlopes, sanjoy, amharc, kuhar
Subscribers: arsenm, nhaehnle, JDevlieghere, hiraditya, xbolva00, llvm-commits
Differential Revision: https://reviews.llvm.org/D47103
Co-authored-by: Krzysztof Pszeniczny <krzysztof.pszeniczny@gmail.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@336073 91177308-0d34-0410-b5e6-96231b3b80d8
Prior to this change, there was no clean way of getting FileCheck to
check that a line is completely empty. The expected way of using
"CHECK: {{^$}}" does not work because the '^' matches the end of the
previous match (this behaviour may be desirable in certain instances).
For the same reason, "CHECK-NEXT: {{^$}}" will fail when the previous
match was at the end of the line, as the pattern will match there.
Using the recommended [[:space:]] to match an explicit new line could
also match a space, and thus is not always desired. Literal '\n'
matches also do not work. A workaround was suggested in the review, but
it is a little clunky.
This change adds a new directive that behaves the same as CHECK-NEXT,
except that it only matches against empty lines (nothing, not even
whitespace, is allowed). As with CHECK-NEXT, it will fail if more than
one newline occurs before the next blank line. Example usage:
; test.txt
foo
bar
; CHECK: foo
; CHECK-EMPTY:
; CHECK-NEXT: bar
Differential Revision: https://reviews.llvm.org/D28896
Reviewed by: probinson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335613 91177308-0d34-0410-b5e6-96231b3b80d8
Update AMDGPU assembler syntax behind the code-object-v3 feature:
* Replace/rename most AMDGPU assembler directives/symbols and document them.
* Provide more diagnostics (e.g. values out of range, missing values, repeated
values).
* Provide path for backwards compatibility, even with underlying descriptor
changes.
Differential Revision: https://reviews.llvm.org/D47736
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335281 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This is essentially a rewrite of the backend which introduces TableGen
base classes GenericEnum, GenericTable, and SearchIndex. They allow
generating custom enums and tables with lookup functions using
separately defined records as the underlying database.
Also added as part of this change:
- Lookup functions may use indices composed of multiple fields.
- Instruction fields are supported similar to Intrinsic fields.
- When the lookup key has contiguous numeric values, the lookup
function will directly index into the table instead of using a binary
search.
The existing SearchableTable functionality is internally mapped to the
new primitives.
Change-Id: I444f3490fa1dbfb262d7286a1660a2c4308e9932
Reviewers: arsenm, tra, t.p.northover
Subscribers: wdng, llvm-commits
Differential Revision: https://reviews.llvm.org/D48013
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@335225 91177308-0d34-0410-b5e6-96231b3b80d8
IEEE 754 defines the expected result on overflow. As far as I know,
hardware implementations (of f16), and compiler-rt (__floatuntisf)
correctly return +-Inf on overflow. And I can't think of any useful
transform that would take advantage of overflow being undefined here.
Differential Revision: https://reviews.llvm.org/D47807
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@334777 91177308-0d34-0410-b5e6-96231b3b80d8
- Do not emit following assembler directives:
- .hsa_code_object_version
- .hsa_code_object_isa
- .amd_amdgpu_isa
- .amd_amdgpu_hsa_metadata
- .amd_amdgpu_pal_metadata
- Do not emit .note entries
- Cleanup and bring in sync kernel descriptor header file
- Emit kernel descriptor into .rodata with appropriate relocations and
alignments
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@334519 91177308-0d34-0410-b5e6-96231b3b80d8
I think we assume poison, not undef, for certain transforms we
currently do. In any case, we should clarify the language here.
(This sort of conversion is undefined behavior according to the C
and C++ standards. And in practice, hardware implementations handle
overflow inconsistently, so it would be difficult to define the
result here.)
Differential Revision: https://reviews.llvm.org/D47851
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@334326 91177308-0d34-0410-b5e6-96231b3b80d8
We need to clarify the language here. I think poison makes more sense
than undef, since it's an undefined operation rather than uninitialized
memory. I don't think anything depends on the difference at the moment,
though.
Differential Revision: https://reviews.llvm.org/D47859
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@334325 91177308-0d34-0410-b5e6-96231b3b80d8
Summary: It has been deprecated in favor of SETCCCARRY for a year now and isn't used by any in tree backend.
Reviewers: efriedma, craig.topper, dblaikie, bkramer
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D47685
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333939 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
The new rules are straightforward. The main rules to keep in mind
are:
1. NAME is an implicit template argument of class and multiclass,
and will be substituted by the name of the instantiating def/defm.
2. The name of a def/defm in a multiclass must contain a reference
to NAME. If such a reference is not present, it is automatically
prepended.
And for some additional subtleties, consider these:
3. defm with no name generates a unique name but has no special
behavior otherwise.
4. def with no name generates an anonymous record, whose name is
unique but undefined. In particular, the name won't contain a
reference to NAME.
Keeping rules 1&2 in mind should allow a predictable behavior of
name resolution that is simple to follow.
The old "rules" were rather surprising: sometimes (but not always),
NAME would correspond to the name of the toplevel defm. They were
also plain bonkers when you pushed them to their limits, as the old
version of the TableGen test case shows.
Having NAME correspond to the name of the toplevel defm introduces
"spooky action at a distance" and breaks composability:
refactoring the upper layers of a hierarchy of nested multiclass
instantiations can cause unexpected breakage by changing the value
of NAME at a lower level of the hierarchy. The new rules don't
suffer from this problem.
Some existing .td files have to be adjusted because they ended up
depending on the details of the old implementation.
Change-Id: I694095231565b30f563e6fd0417b41ee01a12589
Reviewers: tra, simon_tatham, craig.topper, MartinO, arsenm, javed.absar
Subscribers: wdng, llvm-commits
Differential Revision: https://reviews.llvm.org/D47430
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333900 91177308-0d34-0410-b5e6-96231b3b80d8
Object FIle Representation
At codegen time this is emitted into the ELF file a pair of symbol indices and a weight. In assembly it looks like:
.cg_profile a, b, 32
.cg_profile freq, a, 11
.cg_profile freq, b, 20
When writing an ELF file these are put into a SHT_LLVM_CALL_GRAPH_PROFILE (0x6fff4c02) section as (uint32_t, uint32_t, uint64_t) tuples as (from symbol index, to symbol index, weight).
Differential Revision: https://reviews.llvm.org/D44965
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333823 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
They've been deprecated in favor of UADDO/ADDCARRY or USUBO/SUBCARRY for a while.
Target that uses these opcodes are changed in order to ensure their behavior doesn't change.
Reviewers: efriedma, craig.topper, dblaikie, bkramer
Subscribers: jholewinski, arsenm, jyknight, sdardis, nemanjai, nhaehnle, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, jordy.potman.lists, apazos, sabuasal, niosHD, jrtc27, zzheng, edward-jones, mgrang, atanasyan, llvm-commits
Differential Revision: https://reviews.llvm.org/D47422
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333748 91177308-0d34-0410-b5e6-96231b3b80d8
(Relands r333584, reverted in 333592.)
When debugging test failures with -vv (or -v in the case of the
internal shell), this makes it easier to locate the RUN line that
failed. For example, clang's test/Driver/linux-ld.c has 892 total RUN
lines, and clang's test/Driver/arm-cortex-cpus.c has 424 RUN lines
after concatenation for line continuations.
When reading the generated shell script, this also makes it easier to
locate the RUN line that produced each command.
To support reporting RUN line numbers in the case of the internal
shell, this patch extends the internal shell to support the null
command, ":", except pipelines are not supported.
To support reporting RUN line numbers in the case of windows cmd.exe
as the external shell, this patch extends -vv to set "echo on" instead
of "echo off" in bat files. (Support for windows cmd.exe as a lit
external shell will likely be dropped later, but I found out too
late.)
Reviewed By: delcypher, asmith, stella.stamenova, jmorse, lebedev.ri, rnk
Differential Revision: https://reviews.llvm.org/D44598
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333614 91177308-0d34-0410-b5e6-96231b3b80d8
(Relands r330755 (reverted in r330848) with fix for PR37239.)
When debugging test failures with -vv (or -v in the case of the
internal shell), this makes it easier to locate the RUN line that
failed. For example, clang's test/Driver/linux-ld.c has 892 total RUN
lines, and clang's test/Driver/arm-cortex-cpus.c has 424 RUN lines
after concatenation for line continuations.
When reading the generated shell script, this also makes it easier to
locate the RUN line that produced each command.
To support reporting RUN line numbers in the case of the internal
shell, this patch extends the internal shell to support the null
command, ":", except pipelines are not supported.
To support reporting RUN line numbers in the case of windows cmd.exe
as the external shell, this patch extends -vv to set "echo on" instead
of "echo off" in bat files. (Support for windows cmd.exe as a lit
external shell will likely be dropped later, but I found out too
late.)
Reviewed By: delcypher, asmith, stella.stamenova, jmorse, lebedev.ri, rnk
Differential Revision: https://reviews.llvm.org/D44598
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333584 91177308-0d34-0410-b5e6-96231b3b80d8
Summary: It was fully replaced back in 2014, and the implementation was removed 11 months ago by r306797.
Reviewers: hfinkel, chandlerc, whitequark, deadalnix
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D47436
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333378 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Implements AsmWriter support for printing the module summary index to
assembly with the format discussed in the RFC "LLVM Assembly format for
ThinLTO Summary".
Implements just enough of the parsing support to recognize and ignore
the summary entries. As agreed in the RFC thread, this will be the
behavior when assembling the IR. A follow on change will implement
parsing/assembling of the summary entries for use by tools that
currently build the summary index from bitcode.
Reviewers: dexonsmith, pcc
Subscribers: inglorion, eraman, steven_wu, dblaikie, llvm-commits
Differential Revision: https://reviews.llvm.org/D46699
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333335 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This feature is not needed, but it might be usefull in the future
to use metadata to mark what which function should support it
(and strip it when not).
Reviewers: rsmith, sanjoy, amharc, kuhar
Subscribers: hiraditya, llvm-commits
Differential Revision: https://reviews.llvm.org/D45419
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@332787 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Minor changes to reflect changes to the code that were not documented:
- `SCUDO_DEFAULT_OPTIONS` compile time way of defining options;
- MIPS added as a supported architecture;
- clarification on how to fully disable the Quarantine;
- rewording in a few places.
Reviewers: alekseyshl, flowerhack
Reviewed By: alekseyshl
Subscribers: sdardis, arichardson, atanasyan, llvm-commits
Differential Revision: https://reviews.llvm.org/D47071
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@332736 91177308-0d34-0410-b5e6-96231b3b80d8
