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6195 Commits

Author SHA1 Message Date
Rafael Espindola
7ec60e8686 Revert "Revert "[Orc] Directly emit machine code for the x86 resolver block and trampolines.""
This reverts commit r251937.

The test was updated to the new API, bring the API back.

llvm-svn: 251944
2015-11-03 16:40:37 +00:00
Rafael Espindola
c04851c1d4 Revert "[Orc] Directly emit machine code for the x86 resolver block and trampolines."
This reverts commit r251933.

It broke the build of examples/Kaleidoscope/Orc/fully_lazy/toy.cpp.

llvm-svn: 251937
2015-11-03 16:25:20 +00:00
Lang Hames
f8e78a5c05 [Orc] Directly emit machine code for the x86 resolver block and trampolines.
Bypassing LLVM for this has a number of benefits:

1) Laziness support becomes asm-syntax agnostic (previously lazy jitting didn't
   work on Windows as the resolver block was in Darwin asm).

2) For cross-process JITs, it allows resolver blocks and trampolines to be
   emitted directly in the target process, reducing cross process traffic.

3) It should be marginally faster.

llvm-svn: 251933
2015-11-03 16:10:18 +00:00
Teresa Johnson
c2f01dd7ba Pass enum instead of bool to new linkInModule call in llvm-link
A new call I added to linkInModule from llvm-link in r251866
was still passing in a boolean for an argument that was changed to an
enum in r246561. I didn't catch this in my merge since the bool false
matched the flag value it mapped to.

llvm-svn: 251925
2015-11-03 15:10:50 +00:00
Rafael Espindola
2faf05c4dc Don't implicitly construct a Archive::child_iterator.
llvm-svn: 251878
2015-11-03 01:32:40 +00:00
Rui Ueyama
c7d5a46f58 llvm-pdbdump: Simplify. NFC.
llvm-svn: 251873
2015-11-03 01:04:44 +00:00
Teresa Johnson
90b0eac682 Restore "Support for ThinLTO function importing and symbol linking."
This restores commit r251837, with the new library dependence added to
llvm-link/Makefile to address bot failures.

llvm-svn: 251866
2015-11-03 00:14:15 +00:00
Kevin Enderby
234f8e1f0f Allow llvm-nm’s single letter command line flags to be grouped.
Which is needed if we want to replace darwin’s nm(1) with llvm-nm
as there are many uses of grouped flags.  The added test case is
one specific case that is in real use.

rdar://23337419

llvm-svn: 251864
2015-11-02 23:42:05 +00:00
Teresa Johnson
077216c4b1 Revert "Support for ThinLTO function importing and symbol linking."
This reverts commit r251837, due to a number of bot failures of the form:

/home/grosser/buildslave/perf-x86_64-penryn-O3-polly-fast/llvm.obj/tools/llvm-link/Release+Asserts/llvm-link.o:llvm-link.cpp:function
loadIndex(llvm::LLVMContext&, llvm::Module const*): error: undefined
reference to
'llvm::object::FunctionIndexObjectFile::create(llvm::MemoryBufferRef,
llvm::LLVMContext&, llvm::Module const*, bool)'
/home/grosser/buildslave/perf-x86_64-penryn-O3-polly-fast/llvm.obj/tools/llvm-link/Release+Asserts/llvm-link.o:llvm-link.cpp:function
loadIndex(llvm::LLVMContext&, llvm::Module const*): error: undefined
reference to 'llvm::object::FunctionIndexObjectFile::takeIndex()'

I'm not sure why these are happening - I added Object to the requred
libraries in tools/llvm-link/LLVMBuild.txt and the LLVM_LINK_COMPONENTS
in tools/llvm-link/CMakeLists.txt. Confirmed for my build that these
symbols come out of libLLVMObject.a. What am I missing?

llvm-svn: 251841
2015-11-02 22:17:32 +00:00
Teresa Johnson
30954fb923 Support for ThinLTO function importing and symbol linking.
Summary:
Support for necessary linkage changes and symbol renaming during
ThinLTO function importing.

Also includes llvm-link support for manually importing functions
and associated llvm-link based tests.

Note that this does not include support for intelligently importing
metadata, which is currently imported duplicate times. That support will
be in the follow-on patch, and currently is ignored by the tests.

Reviewers: dexonsmith, joker.eph, davidxl

Subscribers: tobiasvk, tejohnson, llvm-commits

Differential Revision: http://reviews.llvm.org/D13515

llvm-svn: 251837
2015-11-02 21:39:10 +00:00
Tim Northover
51b430da05 MachO: support tvOS and watchOS version min commands in llvm-objdump
llvm-svn: 251834
2015-11-02 21:26:58 +00:00
Teresa Johnson
1cf56803da Clang format a few prior patches (NFC)
I had clang formatted my earlier patches using the wrong style.
Reformatted with the LLVM style.

llvm-svn: 251812
2015-11-02 18:02:11 +00:00
Rafael Espindola
b1fed5af0a This doesn't need a object::Archive::child_iterator.
llvm-svn: 251796
2015-11-02 13:30:46 +00:00
Xinliang David Li
1ef7153d55 [PGO] Value profiling (index format) code cleanup and testing
1. Added a set of public interfaces in InstrProfRecord
    class to access (read/write) value profile data.
 2. Changed IndexedProfile reader and writer code to 
    use the newly defined interfaces and hide implementation
    details.
 3. Added a couple of unittests for value profiling:
   - Test new interfaces to get and set value profile data
   - Test value profile data merging with various scenarios.

 No functional change is expected. The new interfaces will also
 make it possible to change on-disk format of value prof data
 to be more compact (to be submitted). 

llvm-svn: 251771
2015-11-02 05:08:23 +00:00
Rafael Espindola
4411a45b5e Make a few definitions static. NFC.
llvm-svn: 251759
2015-11-01 00:14:59 +00:00
Rafael Espindola
38d8e625e7 Use Child instead of child_iterator in the archive writer.
We never need to pass end(). This will also remove some complication
once we start adding error checking.

llvm-svn: 251758
2015-11-01 00:10:37 +00:00
Rafael Espindola
cb48e87760 This can take a const reference. NFC.
llvm-svn: 251753
2015-10-31 22:25:59 +00:00
Rafael Espindola
5f017c0eef Simplify handling of archive Symbol tables.
We only need to store a StringRef.

llvm-svn: 251748
2015-10-31 21:03:29 +00:00
Kevin Enderby
25abebf82b Implemented the code to make llvm-nm’s -g option work.
While llvm-nm parses the -g option and has help that describes it as:

  -extern-only            - Show only external symbols

There is no code in the program to use the boolean valve it sets from the
command line.

rdar://23261095

llvm-svn: 251718
2015-10-30 19:55:32 +00:00
Alexey Samsonov
0b64fb3077 Let the users of LLVMSymbolizer decide whether they want to symbolize inlined frames.
Introduce LLVMSymbolizer::symbolizeInlinedCode() instead of switching
on PrintInlining option passed to the constructor. This will be needed
once we retrun structured data (instead of std::string) from
LLVMSymbolizer and move printing logic out.

llvm-svn: 251675
2015-10-30 00:40:20 +00:00
Tim Northover
829dfee297 ARM: support .watchos_version_min and .tvos_version_min.
These MachO file directives are used by linkers and other tools to provide
compatibility information, much like the existing .ios_version_min and
.macosx_version_min.

llvm-svn: 251569
2015-10-28 22:36:05 +00:00
Ed Schouten
072b6e7dc4 Prefer ranlib mode over ar mode.
For CloudABI's toolchain I have a symlink that goes from <target>-ar and
<target>-ranlib to LLVM's ar binary, to mimick GNU Binutils' naming
scheme. The problem is that if we're targetting ARM64, the name of the
ranlib executable is aarch64-unknown-cloudabi-ranlib. This already
contains the string "ar".

Let's move the "ranlib" test above the "ar" test. It's not that likely
that we're going to see operating systems or harwdare architectures that
are called "ranlib".

Reviewed by:	rafael
Differential Revision:	http://reviews.llvm.org/D14123

llvm-svn: 251413
2015-10-27 16:37:49 +00:00
Chris Bieneman
d3dd2855e4 [CMake] Get rid of LLVM_DYLIB_EXPORT_ALL, and make it the default, add libLLVM-C on darwin to cover the C API needs.
Summary:
We've had a lot of discussion in the past about the meaningful and useful default behaviors for the llvm-shlib tool. The original implementation was heavily geared toward Apple's use, and I think that was wrong. This patch seeks to correct that.

I've removed the LLVM_DYLIB_EXPORT_ALL variable and made libLLVM export everything by default.

I've also added a new target that is only built on Darwin for libLLVM-C as a library that re-exports the LLVM-C API. This library is not built on Linux because ELF doesn't support re-export libraries in the same way MachO does.

Reviewers: chapuni, resistor, bogner, axw

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D13842

llvm-svn: 251411
2015-10-27 16:02:04 +00:00
Mehdi Amini
5bbc793788 Add an (optional) identification block in the bitcode
Processing bitcode from a different LLVM version can lead to
unexpected behavior. The LLVM project guarantees autoupdating
bitcode from a previous minor revision for the same major, but
can't make any promise when reading bitcode generated from a
either a non-released LLVM, a vendor toolchain, or a "future"
LLVM release. This patch aims at being more user-friendly and
allows a bitcode produce to emit an optional block at the
beginning of the bitcode that will contains an opaque string
intended to describe the bitcode producer information. The
bitcode reader will dump this information alongside any error it
reports.

The optional block also includes an "epoch" number, monotonically
increasing when incompatible changes are made to the bitcode. The
reader will reject bitcode whose epoch is different from the one
expected.

Differential Revision: http://reviews.llvm.org/D13666

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 251325
2015-10-26 18:37:00 +00:00
Alexey Samsonov
e8d7a2ffd9 Move parts of llvm-symbolizer tool into LLVMSymbolize library.
Summary: See http://lists.llvm.org/pipermail/llvm-dev/2015-October/091624.html

Reviewers: echristo

Subscribers: llvm-commits, aizatsky

Differential Revision: http://reviews.llvm.org/D13998

llvm-svn: 251316
2015-10-26 17:56:12 +00:00
Rafael Espindola
16110f1617 Simplify boolean conditional return statements in tools/llvm-symbolizer.
Patch by Richard.

llvm-svn: 251216
2015-10-24 23:23:25 +00:00
Rafael Espindola
1149216eae Simplify boolean expressions in tools/llvm-objdump.
Patch by Richard.

llvm-svn: 251215
2015-10-24 23:19:10 +00:00
Rafael Espindola
a6bc23879a Add a RAW mode to StringTableBuilder.
In this mode it just tries to tail merge the strings without imposing any other
format constrains. It will not, for example, add a null byte between them.

Also add support for keeping a tentative size and offset if we decide to
not optimize after all.

This will be used shortly in lld for merging SHF_STRINGS sections.

llvm-svn: 251153
2015-10-23 21:48:05 +00:00
Oleg Ranevskyy
4d25723e05 Test commit: fix typo in comment.
llvm-svn: 251122
2015-10-23 17:10:44 +00:00
Davide Italiano
23e7cc7366 [llvm-readobj] Don't cast qualifiers away. Now gcc is happy again.
Reported by: mikael.holmen at ericsson.com

llvm-svn: 251117
2015-10-23 16:52:22 +00:00
Davide Italiano
dbd9dcfcf6 [JIT] Towards a working small memory model.
This commit introduces an option, --preallocate, so that we can get memory
upfront and use it in small memory model tests (in order to get
reliable results).

Differential Revision:	http://reviews.llvm.org/D13630

llvm-svn: 250956
2015-10-21 22:12:03 +00:00
Kevin Enderby
1d015d1179 Backing out commit r250906 as it broke lld.
llvm-svn: 250908
2015-10-21 17:13:20 +00:00
Kevin Enderby
bcb0d035e4 This removes the eating of the error in Archive::Child::getSize() when the characters
in the size field in the archive header for the member is not a number.  To do this we
have all of the needed methods return ErrorOr to push them up until we get out of lib.
Then the tools and can handle the error in whatever way is appropriate for that tool.

So the solution is to plumb all the ErrorOr stuff through everything that touches archives.
This include its iterators as one can create an Archive object but the first or any other
Child object may fail to be created due to a bad size field in its header.

Thanks to Lang Hames on the changes making child_iterator contain an
ErrorOr<Child> instead of a Child and the needed changes to ErrorOr.h to add
operator overloading for * and -> .

We don’t want to use llvm_unreachable() as it calls abort() and is produces a “crash”
and using report_fatal_error() to move the error checking will cause the program to
stop, neither of which are really correct in library code. There are still some uses of
these that should be cleaned up in this library code for other than the size field.

Also corrected the code where the size gets us to the “at the end of the archive”
which is OK but past the end of the archive will return object_error::parse_failed now.

The test cases use archives with text files so one can see the non-digit character,
in this case a ‘%’, in the size field.

llvm-svn: 250906
2015-10-21 16:59:24 +00:00
Vedant Kumar
34ef13aeba [llvm-cov] Adjust column widths for function and file reports
Previously, we only expanded function and filename column widths when
rendering file reports. This commit makes the change for function
reports as well.

llvm-svn: 250900
2015-10-21 16:03:32 +00:00
Mehdi Amini
3e5272af34 Revert "Add missing #include, found by modules build."
This reverts commit r250239.
It seems unwanted changes got committed here, and part of
the patch does not seem correct.
For instance RoundUpToAlignment() is called without its returned
value actually used.

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 250882
2015-10-21 06:10:55 +00:00
Duncan P. N. Exon Smith
cc73874cf4 bugpoint: Remove implicit ilist iterator conversions, NFC
This is the last of the implicit ilist iterator conversions in LLVM.
Still up for debate whether we let these bitrot back:
http://lists.llvm.org/pipermail/llvm-dev/2015-October/091617.html

llvm-svn: 250852
2015-10-20 19:36:39 +00:00
Duncan P. N. Exon Smith
a03b90372e llvm-diff: Remove implicit ilist iterator conversions, NFC
llvm-svn: 250842
2015-10-20 18:17:05 +00:00
Manuel Klimek
fa13a98a8a Make class final to pacify -Wnon-virtual-dtor.
llvm-svn: 250805
2015-10-20 08:21:01 +00:00
Teresa Johnson
4655ffb0a6 Pass FunctionInfoIndex by reference to WriteFunctionSummaryToFile (NFC)
Implemented suggestion by dblakie in review for r250704.

llvm-svn: 250723
2015-10-19 19:06:06 +00:00
Lang Hames
4bba9adcc4 [Orc] Add support for emitting indirect stubs directly into the JIT target's
memory, rather than representing the stubs in IR. Update the CompileOnDemand
layer to use this functionality.

Directly emitting stubs is much cheaper than building them in IR and codegen'ing
them (see below). It also plays well with remote JITing - stubs can be emitted
directly in the target process, rather than having to send them over the wire.

The downsides are:

(1) Care must be taken when resolving symbols, as stub symbols are held in a
    separate symbol table. This is only a problem for layer writers and other
    people using this API directly. The CompileOnDemand layer hides this detail.

(2) Aliases of function stubs can't be symbolic any more (since there's no
    symbol definition in IR), but must be converted into a constant pointer
    expression. This means that modules containing aliases of stubs cannot be
    cached. In practice this is unlikely to be a problem: There's no benefit to
    caching such a module anyway.

On balance I think the extra performance is more than worth the trade-offs: In a
simple stress test with 10000 dummy functions requiring stubs and a single
executed "hello world" main function, directly emitting stubs reduced user time
for JITing / executing by over 90% (1.5s for IR stubs vs 0.1s for direct
emission).

llvm-svn: 250712
2015-10-19 17:43:51 +00:00
Teresa Johnson
0fb3f39b16 Convert gold-plugin unnecessary unique_ptr into local (NFC)
llvm-svn: 250704
2015-10-19 15:23:03 +00:00
Teresa Johnson
e92d7c468f Fix required library for r250699 to BitWriter instead of BitReader.
This should fix the mingw3 bot failure.

llvm-svn: 250703
2015-10-19 15:21:46 +00:00
Teresa Johnson
8fa2a4762b llvm-lto support for generating combined function indexes
Summary:
This patch adds support to llvm-lto that mirrors the support added by
r249270 to the gold plugin. This enables better testing of combined
index generation for ThinLTO.

Added a new test, and this support will be used in the test in D13515.

Reviewers: joker.eph

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D13847

llvm-svn: 250699
2015-10-19 14:30:44 +00:00
Craig Topper
c8409f4435 Make a bunch of static arrays const.
llvm-svn: 250642
2015-10-18 05:15:34 +00:00
Matthias Braun
9dcf26ed04 StreamWriter: List basic types instead of derived ones in HexNumber
This avoids problems with different (u)intXX definition on different
platforms. Specifically this fixes a case on OS/X which had uint64_t
defined as unsigned long long.

llvm-svn: 250589
2015-10-17 00:08:45 +00:00
Reid Kleckner
2cc4abce13 Speculative fix for GCC build
llvm-svn: 250585
2015-10-16 23:53:12 +00:00
Reid Kleckner
43d4930f19 [llvm-symbolizer] Use the export table if no symbols are present
This lets us make guesses about symbols in third party DLLs without
debug info, like MSVCR120.dll or kernel32.dll. dbghelp does the same
thing.

llvm-svn: 250582
2015-10-16 23:43:22 +00:00
Davide Italiano
af14715a42 [llvm-readobj] Teach ELFDumper about symbol versioning.
Differential Revision:	 http://reviews.llvm.org/D13824

llvm-svn: 250575
2015-10-16 23:19:01 +00:00
Davide Italiano
47737b25b7 [llvm-readobj/ELF] Dump DT_VERDEF/DT_VERDEFNUM correctly.
llvm-svn: 250464
2015-10-15 22:04:55 +00:00
Chris Bieneman
d34bb8a756 [CMake] [Darwin] Add support for generating Xcode-compatible toolchains that xcodebuild and xcrun can search
Summary:
Sometimes you want to install a custom compiler and use it like the system compiler without overriding the system compiler. This patch lets you create xctoolchains that the darwin command line tools can use.

To use this patch set LLVM_CREATE_XCODE_TOOLCHAIN=On in your CMake invocation and build the `install-code-toolchain` target.

After installation you can set the envar EXTERNAL_TOOLCHAINS_DIR to your installed Toolchains directory, and the TOOLCHAINS envar to the toolchain identifier (ex org.llvm.3.8.0svn). This will then cause /usr/bin/clang to call your newly installed clang.

Reviewers: Bigcheese, bogner

Subscribers: tobiasfar, llvm-commits

Differential Revision: http://reviews.llvm.org/D13605

llvm-svn: 250450
2015-10-15 20:09:01 +00:00