Commit Graph

5873 Commits

Author SHA1 Message Date
Nathan Slingerland
5a941550ef Revert "[llvm-profdata] Add support for weighted merge of profile data"
This reverts commit b7250858d96b8ce567681214273ac0e62713c661.

Reverting in order to investigate Windows test failure.

llvm-svn: 254687
2015-12-04 02:13:58 +00:00
Nathan Slingerland
e6205d97d7 [llvm-profdata] Add support for weighted merge of profile data
This change adds support for an optional weight when merging profile data with the llvm-profdata tool.
Weights are specified by adding an option ':<weight>' suffix to the input file names.

Adding support for arbitrary weighting of input profile data allows for relative importance to be placed on the
input data from multiple training runs.

Both sampled and instrumented profiles are supported.

Reviewers: dnovillo, bogner, davidxl

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D14547

llvm-svn: 254669
2015-12-04 00:00:20 +00:00
Yury Gribov
3e9d2bdddc Fix "WARNING: Title underline too short." introduced by r254404.
Patch by Max Ostapenko. 

llvm-svn: 254413
2015-12-01 13:24:48 +00:00
Yury Gribov
8eadab0fdb Introduce new @llvm.get.dynamic.area.offset.i{32, 64} intrinsics.
The @llvm.get.dynamic.area.offset.* intrinsic family is used to get the offset
from native stack pointer to the address of the most recent dynamic alloca on
the caller's stack. These intrinsics are intendend for use in combination with
@llvm.stacksave and @llvm.restore to get a pointer to the most recent dynamic
alloca. This is useful, for example, for AddressSanitizer's stack unpoisoning
routines.

Patch by Max Ostapenko.

Differential Revision: http://reviews.llvm.org/D14983

llvm-svn: 254404
2015-12-01 11:40:55 +00:00
Paul Robinson
6a55b6dd41 Have 'optnone' respect the -fast-isel=false option.
This is primarily useful for debugging optnone v. ISel issues.

Differential Revision: http://reviews.llvm.org/D14792

llvm-svn: 254335
2015-11-30 21:56:16 +00:00
Kostya Serebryany
ce3a0cbd06 [libFuzzer] clean up the docs, add one more link
llvm-svn: 254115
2015-11-26 00:12:57 +00:00
Kostya Serebryany
4b6eeeca4b [libFuzzer] add a flag -exact_artifact_path
llvm-svn: 254100
2015-11-25 21:40:46 +00:00
Matthias Braun
650d1f2fc1 Doxygen: Use mathjax to create formulas.
The main motivation is to not require a latex installation when building
the documentation. I would also expect a better image quality and the
ability to copy&paste from formulas with a javascript based solution for
displaying the math.

Differential Revision: http://reviews.llvm.org/D14960

llvm-svn: 254048
2015-11-25 00:50:47 +00:00
Xinliang David Li
7067931ac2 Fix sphinx-build error when building documentation.
Consolidate the description of -binary/-text option description
to avoid duplicate ID error by sphinux-build.

llvm-svn: 254018
2015-11-24 20:48:25 +00:00
Xinliang David Li
0f29a15199 [PGO] Add --text option for llvm-profdata show|merge commands
The new option is similar to the SampleProfile dump option.

- dump raw/indexed format into text profile format
- merge the profile and output into text profile format.

Note that Value Profiling data text format is not yet designed. 
That functionality will be added later.

Differential Revision: http://reviews.llvm.org/D14894

llvm-svn: 253913
2015-11-23 20:47:38 +00:00
Sanjoy Das
39183a4764 [docs] Minor fixes to the operand bundle section
llvm-svn: 253771
2015-11-21 09:12:07 +00:00
Elena Demikhovsky
fea4d52acf Pointers in Masked Load, Store, Gather, Scatter intrinsics
The masked intrinsics support all integer and floating point data types. I added the pointer type to this list.
Added tests for CodeGen and for Loop Vectorizer.
Updated the Language Reference.

Differential Revision: http://reviews.llvm.org/D14150

llvm-svn: 253544
2015-11-19 07:17:16 +00:00
Jingyue Wu
acb193e196 [doc] fix a wrong link
llvm-svn: 253509
2015-11-18 22:01:44 +00:00
Betul Buyukkurt
b3b3ea9a07 [PGO] Value profiling support
This change introduces an instrumentation intrinsic instruction for
value profiling purposes, the lowering of the instrumentation intrinsic
and raw reader updates. The raw profile data files for llvm-profdata
testing are updated.

llvm-svn: 253484
2015-11-18 18:14:55 +00:00
Sanjoy Das
f5a4d357df Teach the inliner to track deoptimization state
Summary:
This change teaches LLVM's inliner to track and suitably adjust
deoptimization state (tracked via deoptimization operand bundles) as it
inlines through call sites.  The operation is described in more detail
in the LangRef changes.

Reviewers: reames, majnemer, chandlerc, dexonsmith

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D14552

llvm-svn: 253438
2015-11-18 06:23:38 +00:00
Jingyue Wu
1da6b35356 [doc] simplify the doc on compiling CUDA
CUDA support doesn't reply on temporary patches any more. Thanks Artem!

llvm-svn: 253427
2015-11-18 01:59:05 +00:00
Davide Italiano
2537f35175 [Documentation] Add guidelines for grouping tests together.
This was considered a good practice but it was not documented. Now it is.

Differential Revision:	http://reviews.llvm.org/D14733

llvm-svn: 253281
2015-11-17 02:17:35 +00:00
Alex Denisov
1f79f24702 [Docs] Fix typo
llvm-svn: 253167
2015-11-15 14:13:24 +00:00
Akira Hatanaka
62393b7021 [Docs] Fix warning "Title underline too short."
llvm-svn: 253082
2015-11-13 21:09:57 +00:00
Artyom Skrobov
2bb62cb91a Fixing a typo in docs/CodeGenerator.rst
llvm-svn: 253045
2015-11-13 15:14:04 +00:00
Kostya Serebryany
9b7e79ddde [libFuzzer] more trophies
llvm-svn: 253006
2015-11-13 02:44:16 +00:00
James Molloy
c197f50184 [SDAG] Introduce a new BITREVERSE node along with a corresponding LLVM intrinsic
Several backends have instructions to reverse the order of bits in an integer. Conceptually matching such patterns is similar to @llvm.bswap, and it was mentioned in http://reviews.llvm.org/D14234 that it would be best if these patterns were matched in InstCombine instead of reimplemented in every different target.

This patch introduces an intrinsic @llvm.bitreverse.i* that operates similarly to @llvm.bswap. For plumbing purposes there is also a new ISD node ISD::BITREVERSE, with simple expansion and promotion support.

The intention is that InstCombine's BSWAP detection logic will be extended to support BITREVERSE too, and @llvm.bitreverse intrinsics emitted (if the backend supports lowering it efficiently).

llvm-svn: 252878
2015-11-12 12:29:09 +00:00
Hemant Kulkarni
44f733c38a Fix docs build break for revision r252798
llvm-svn: 252812
2015-11-11 22:14:58 +00:00
David Majnemer
3deb8be573 [IR] Add support for empty tokens
When working with tokens, it is often the case that one has instructions
which consume a token and produce a new token.  Currently, we have no
mechanism to represent an initial token state.

Instead, we can create a notional "empty token" by inventing a new
constant which captures the semantics we would like.  This new constant
is called ConstantTokenNone and is written textually as "token none".

Differential Revision: http://reviews.llvm.org/D14581

llvm-svn: 252811
2015-11-11 21:57:16 +00:00
Sanjoy Das
27d9222fb6 Introduce deoptimization operand bundles
Summary:
This change introduces the notion of "deoptimization" operand bundles.
LLVM can recognize and optimize these in more precise ways than it can a
generic "unknown" operand bundles.

The current form of this special recognition / optimization is an enum
entry in LLVMContext, a LangRef blurb and a verifier rule.  Over time we
will teach LLVM to do more aggressive optimization around deoptimization
operand bundles, exploiting known facts about kinds of state
deoptimization operand bundles are allowed to track.

Reviewers: reames, majnemer, chandlerc, dexonsmith

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D14551

llvm-svn: 252806
2015-11-11 21:38:02 +00:00
Hemant Kulkarni
5477f5f0f0 [Symbolizer]: Add -pretty-print option
Differential Revision: http://reviews.llvm.org/D13671

llvm-svn: 252798
2015-11-11 20:41:43 +00:00
Colin LeMahieu
0b68751572 Reverting r252760
llvm-svn: 252770
2015-11-11 18:11:06 +00:00
Hemant Kulkarni
3b2ab0332b [Symbolizer]: Add -pretty-print option
Differential Revision: http://reviews.llvm.org/D13671

llvm-svn: 252760
2015-11-11 17:47:54 +00:00
Kostya Serebryany
c8a40f9de3 [libFuzzer] better links
llvm-svn: 252705
2015-11-11 05:25:24 +00:00
Kostya Serebryany
b314765a86 [libFuzzer] more trophies
llvm-svn: 252704
2015-11-11 05:20:55 +00:00
Jingyue Wu
4072843d76 [doc] Compile CUDA with LLVM
Summary:
This patch adds documentation on compiling CUDA with LLVM as requested by many
engineers and researchers. It includes not only user guides but also some
internals (mostly optimizations) so that early adopters can start hacking and
contributing.

Quite a few researchers who contacted us haven't used LLVM before, which is
unsurprising as it hasn't been long since LLVM picked up CUDA. So I added a
short summary to help these folks get started with LLVM.

I expect this document to evolve substantially down the road. The user guides
will be much simplified after the Clang integration is done. However, the
internals should continue growing to include for example performance debugging
and key areas to improve.

Reviewers: chandlerc, meheff, broune, tra

Subscribers: silvas, jingyue, llvm-commits, eliben

Differential Revision: http://reviews.llvm.org/D14370

llvm-svn: 252660
2015-11-10 22:35:47 +00:00
Chris Bieneman
b5ab75c303 Deprecate Autoconf
As per the very positive feedback from llvm-dev (http://lists.llvm.org/pipermail/llvm-dev/2015-November/092150.html), this commit officially deprecates the LLVM autoconf-based build system.

Anyone still using it should switch to CMake.

llvm-svn: 252520
2015-11-09 21:54:55 +00:00
Renato Golin
75f12574da [EABI] Add LLVM support for -meabi flag
"GCC requires the freestanding environment provide memcpy, memmove, memset
and memcmp": https://gcc.gnu.org/onlinedocs/gcc-5.2.0/gcc/Standards.html

Hence in GNUEABI targets LLVM should not convert 'memops' to their equivalent
'__aeabi_memops'. This convertion violates GCC contract.

The -meabi flag controls whether or not LLVM will modify 'memops' in GNUEABI
targets.

Without -meabi: use the triple default EABI.
With -meabi=default: use the triple default EABI.
With -meabi=gnu: use 'memops'.
With -meabi=4 or -meabi=5: use '__aeabi_memops'.
With -meabi set to an unknown value: same as -meabi=default.

Patch by Vinicius Tinti.

llvm-svn: 252462
2015-11-09 12:40:30 +00:00
Akira Hatanaka
a73e1a6ef3 Add 'notail' marker for call instructions.
This marker prevents optimization passes from adding 'tail' or
'musttail' markers to a call. Is is used to prevent tail call
optimization from being performed on the call.

rdar://problem/22667622

Differential Revision: http://reviews.llvm.org/D12923

llvm-svn: 252368
2015-11-06 23:55:38 +00:00
Renato Golin
85b920c61f [Docs] Change ARM build info to CMake
llvm-svn: 252329
2015-11-06 18:39:34 +00:00
James Molloy
be569ad3b9 Add a new attribute: norecurse
This attribute allows the compiler to assume that the function never recurses into itself, either directly or indirectly (transitively). This can be used among other things to demote global variables to locals.

llvm-svn: 252282
2015-11-06 10:32:53 +00:00
Peter Collingbourne
a9e78321e1 docs: Document function-attached metadata and IR changes from r252219.
llvm-svn: 252268
2015-11-06 02:41:02 +00:00
Matthias Braun
9e09a8d1d7 CommandGuide/lit.rst: Document the new commandline option -a
llvm-svn: 252257
2015-11-06 01:13:40 +00:00
Peter Collingbourne
80a329ff56 Update tutorial for debug info IR change.
llvm-svn: 252226
2015-11-05 22:55:44 +00:00
Saleem Abdulrasool
2d3fcc35ee docs: document x mangling in LangRef
Windows has two different mangling specifiers.  `x` is used on x86 for the `_`
UserLabelPrefix.  Others use `w` for the no UserLabelPrefix.

llvm-svn: 251260
2015-10-25 20:39:35 +00:00
Kostya Serebryany
c171514e30 [libFuzzer] add -merge flag to merge corpora
llvm-svn: 251168
2015-10-24 01:16:40 +00:00
Jonathan Roelofs
c6f225bc78 Fix another reference to in-source builds
llvm-svn: 251127
2015-10-23 17:42:51 +00:00
Sanjoy Das
d3ebbcae45 [LangRef] Fix the doc for operand bundles
I accidentally messed this up after a merge conflict in a previous
commit.

llvm-svn: 251089
2015-10-23 01:28:05 +00:00
Sanjoy Das
de9991d3c2 [OperandBundles] Make function attributes conservatively correct
Summary:
This makes attribute accessors on `CallInst` and `InvokeInst` do the
(conservatively) right thing.  This essentially involves, in some
cases, *not* falling back querying the attributes on the called
`llvm::Function` when operand bundles are present.

Attributes locally present on the `CallInst` or `InvokeInst` will still
override operand bundle semantics.  The LangRef has been amended to
reflect this.  Note: this change does not do anything prevent
`-function-attrs` from inferring `CallSite` local attributes after
inspecting the called function -- that will be done as a separate
change.

I've used `-adce` and `-early-cse` to test these changes.  There is
nothing special about these passes (and they did not require any
changes) except that they seemed be the easiest way to write the tests.

This change does not add deal with `argmemonly`.  That's a later change
because alias analysis requires a related fix before `argmemonly` can be
tested.

Reviewers: reames, chandlerc

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D13961

llvm-svn: 250973
2015-10-22 03:12:22 +00:00
David Majnemer
36d99b8259 Attempt to fix formatting for operand bundles
llvm-svn: 250968
2015-10-22 01:46:38 +00:00
David Blaikie
d6c8327ccf Update LangRef for changes to the alias textual IR format to support typeless pointer work
llvm-svn: 250967
2015-10-22 01:17:29 +00:00
Chris Bieneman
0e4dbd1df6 [CMake] Adding LLVM_CREATE_XCODE_TOOLCHAIN to the CMake documentation page.
llvm-svn: 250451
2015-10-15 20:12:08 +00:00
Justin Bogner
9b6639e09a docs: Stop using DEBUG() without DEBUG_TYPE in the ProgrammersManual
The DEBUG() macro has required that a DEBUG_TYPE be set since r206822.
Update the programmers manual to reflect that, and also update the
wording to point out that DEBUG_TYPE should be defined after #includes.

llvm-svn: 250436
2015-10-15 18:17:44 +00:00
Arch D. Robison
796feea796 Add 'other' in description of extractvalue operands.
llvm-svn: 250314
2015-10-14 19:10:45 +00:00
Chris Bieneman
5508052bc1 [CMake] LLVM_PROFDATA_FILE only works if you're using clang, so we should error out if it is specified when not using clang.
Also updated the CMake docs.

Based on post-commit review of r250108 from Sean Silvas.

llvm-svn: 250150
2015-10-13 05:35:12 +00:00