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Commit Graph

97470 Commits

Author SHA1 Message Date
Andrew Trick
1eb87f0d42 Minor extension to llvm.experimental.patchpoint: don't require a call.
If a null call target is provided, don't emit a dummy call. This
allows the runtime to reserve as little nop space as it needs without
the requirement of emitting a call.

llvm-svn: 194676
2013-11-14 06:54:10 +00:00
Kevin Qin
0b4fc92580 Add test case for AArch64 NEON instruction set misc.
llvm-svn: 194673
2013-11-14 06:45:17 +00:00
Peter Zotov
e0c727aff0 [OCaml] Build stub OCaml libraries for all configured targets
This allows to only link in the needed targets, reducing binary
size and more importantly link time.

Note that this is an incomplete implementation: currently,
LLVM does not have the plumbing which would allow to conditionally
link in AsmPrinter, AsmParser and Disassembler for the targets
which support them. This should be improved in the future.

llvm-svn: 194670
2013-11-14 06:34:21 +00:00
Peter Zotov
b192fa5024 [OCaml] Expose LLVM's fatal error and stacktrace APIs
llvm-svn: 194669
2013-11-14 06:34:13 +00:00
Rafael Espindola
987126fe14 Don't mangle \n and "
There is nothing special about quotes and newlines from the object
file point of view, only the assembler has to worry about expanding
the \n and \".

This patch then removes the special handling from the Mangler.

llvm-svn: 194667
2013-11-14 06:05:49 +00:00
Kai Nacke
7ce6005736 Add external project LDC to release notes.
LDC, the LLVM-based D compiler, is already using LLVM 3.4.

llvm-svn: 194665
2013-11-14 05:57:40 +00:00
NAKAMURA Takumi
b2c2390829 R600/SIFixSGPRCopies.cpp: Fix \param to \return. [-Wdocumentation]
llvm-svn: 194662
2013-11-14 04:05:28 +00:00
NAKAMURA Takumi
1228dcc772 Whitespace.
llvm-svn: 194661
2013-11-14 04:05:22 +00:00
Kevin Qin
7409a29609 [AArch64 neon] support poly64 and relevant intrinsic functions.
llvm-svn: 194659
2013-11-14 03:27:58 +00:00
Nick Kledzik
f868d91818 remove extra semicolon
llvm-svn: 194658
2013-11-14 03:03:05 +00:00
Kevin Qin
47a3b639e3 Implement aarch64 neon instruction class SIMD misc.
llvm-svn: 194656
2013-11-14 02:44:13 +00:00
Nick Kledzik
5701cc8c01 Add dyn_cast<> support to YAML I/O's IO class
llvm-svn: 194655
2013-11-14 02:38:07 +00:00
Michael Gottesman
37877d5d63 Added BlockFrequencyInfo::view for displaying the block frequency propagation graph via graphviz.
This is useful for debugging issues in the BlockFrequency implementation since
one can easily visualize where probability mass and other errors occur in the
propagation.

llvm-svn: 194654
2013-11-14 02:27:46 +00:00
NAKAMURA Takumi
7dbd6ea3fe Suppress llvm-cov.test on Win32, with REQUIRES: shell
"cd" is unsupported in lit internal runner.

llvm-svn: 194652
2013-11-14 02:05:41 +00:00
Matt Arsenault
16c5446ff3 Update emacs llvm mode.
It seems this hasn't been done in a while.

llvm-svn: 194650
2013-11-14 02:03:02 +00:00
Jiangning Liu
5a9b5605ba Implement AArch64 NEON instruction set AdvSIMD (table).
llvm-svn: 194648
2013-11-14 01:57:32 +00:00
Yunzhong Gao
2ab2f4eec5 Fixing a heisenbug where the memory dependence analysis behaves differently
with and without -g.

Adding a test case to make sure that the threshold used in the memory
dependence analysis is respected. The test case also checks that debug
intrinsics are not counted towards this threshold.

Differential Revision: http://llvm-reviews.chandlerc.com/D2141

llvm-svn: 194646
2013-11-14 01:10:52 +00:00
Nick Kledzik
cbecad4abd Add simple support for tags in YAML I/O
llvm-svn: 194644
2013-11-14 00:59:59 +00:00
Yuchen Wu
68c54ebed9 llvm-cov: Slightly improved error checking.
- readInt() should check all 4 bytes can be read, not just 1.
- In the event of false data in the gcno file, it was possible to index
  into a non-existent index of SmallVector, causing assertion error.

llvm-svn: 194639
2013-11-14 00:38:41 +00:00
Yuchen Wu
97ff0f44ba llvm-cov: Removed StringMap holding GCOVLines.
According to the hazy gcov documentation, it appeared to be technically
possible for lines within a block to belong to different source files.
However, upon further investigation, gcov does not actually support
multiple source files for a single block.

This change removes a level of separation between blocks and lines by
replacing the StringMap of GCOVLines with a SmallVector of ints
representing line numbers. This also means that the GCOVLines class is
no longer needed.

This paves the way for supporting the "-a" option, which will output
block information.

llvm-svn: 194637
2013-11-14 00:32:00 +00:00
Yuchen Wu
fe9ba771b2 llvm-cov: Replaced asserts with proper error handling.
Unified the interface for read functions. They all return a boolean
indicating if the read from file succeeded. Functions that previously
returned the read value now store it into a variable that is passed in
by reference instead. Callers will need to check the return value to
detect if an error occurred.

Also added a new test which ensures that no assertions occur when file
contains invalid data. llvm-cov should return with error code 1 upon
failure.

llvm-svn: 194635
2013-11-14 00:07:15 +00:00
Michael Gottesman
defde8b5a9 Fixed 80+ violations.
llvm-svn: 194634
2013-11-14 00:05:07 +00:00
Tom Stellard
cd40f688d0 R600: Fix uninitialized variable usage
llvm-svn: 194632
2013-11-13 23:58:51 +00:00
Reed Kotler
dc8482e73e Take care of long short branch immediate instructions for mips16 in
constant islands.

llvm-svn: 194630
2013-11-13 23:52:18 +00:00
Tom Stellard
c38302be13 R600/SI: Add support for private address space load/store
Private address space is emulated using the register file with
MOVRELS and MOVRELD instructions.

llvm-svn: 194626
2013-11-13 23:36:50 +00:00
Tom Stellard
90e4344bae R600/SI: Prefer SALU instructions for bit shift operations
All shift operations will be selected as SALU instructions and then
if necessary lowered to VALU instructions in the SIFixSGPRCopies pass.

This allows us to do more operations on the SALU which will improve
performance and is also required for implementing private memory
using indirect addressing, since the private memory pointers must stay
in the scalar registers.

This patch includes some fixes from Matt Arsenault.

llvm-svn: 194625
2013-11-13 23:36:37 +00:00
Yuchen Wu
d3ea8ac8a3 llvm-cov: Changed XFAIL targets to be more generic.
llvm-svn: 194622
2013-11-13 23:33:17 +00:00
Yuchen Wu
957d104b63 Added basic unit test for llvm-cov.
This test compares the output of llvm-cov against a coverage file
generated by gcov. Currently, llvm-cov does not work on certain
platforms (namely big-endian architectures such as PowerPC, among
others). These platforms are marked as XFAIL for now, but will be fixed
later.

llvm-svn: 194616
2013-11-13 22:50:15 +00:00
Sebastian Pop
2aa0f76304 add more comments around the delinearization of arrays
llvm-svn: 194612
2013-11-13 22:37:58 +00:00
Rui Ueyama
84aa3c1f2c Path: Add tests for existing file magics.
llvm-svn: 194607
2013-11-13 21:55:41 +00:00
Rui Ueyama
0c4d35a376 Whitespace.
llvm-svn: 194605
2013-11-13 20:31:21 +00:00
Hans Wennborg
f386ce44b5 Revert my CMake patches concerning building with /MT (r194589, r194596)
Reid pointed out we already have LLVM_USE_CRT_{buildtype} to set it.

llvm-svn: 194604
2013-11-13 20:29:10 +00:00
Jakub Staszak
3dde280fe1 Simplify code. No functionality change.
llvm-svn: 194602
2013-11-13 20:18:38 +00:00
Jakub Staszak
5e8ab0ddcf Use StringRef instead of std::string
llvm-svn: 194601
2013-11-13 20:09:11 +00:00
Chad Rosier
fae5b22550 [AArch64] Add support for legacy AArch32 NEON scalar shift by immediate
instructions.  This patch does not include the shift right and accumulate
instructions.  A number of non-overloaded intrinsics have been remove in favor
of their overloaded counterparts.

llvm-svn: 194598
2013-11-13 20:05:37 +00:00
Hans Wennborg
2390fdb13b CMake: make building with /MT an option instead of always forcing it
for release builds.

This is a follow-up to r194589. Aaron pointed out that building
libraries with /MT and using them in an application that uses a
different run-time library can be a bad idea.

Move the option to build with /MT behind a CMake option so it can be
turned on selectively, such as when building the toolchain installer.

llvm-svn: 194596
2013-11-13 19:12:02 +00:00
Weiming Zhao
1594297410 Enable generating legacy IT block for AArch32
By default, the behavior of IT block generation will be determinated
dynamically base on the arch (armv8 vs armv7). This patch adds backend
options: -arm-restrict-it and -arm-no-restrict-it.  The former one
restricts the generation of IT blocks (the same behavior as thumbv8) for
both arches. The later one allows the generation of legacy IT block (the
same behavior as ARMv7 Thumb2) for both arches.

Clang will support -mrestrict-it and -mno-restrict-it, which is
compatible with GCC.

llvm-svn: 194592
2013-11-13 18:29:49 +00:00
Hans Wennborg
e4d2a9b940 cmake: link release builds statically against run-time library on windows (use /MT instead of /MD)
This should fix the problem of snapshot builds created with MSVC 2012 not
working for users with MSVC 2010, etc.

Differential Revision: http://llvm-reviews.chandlerc.com/D2157

llvm-svn: 194589
2013-11-13 18:16:23 +00:00
David Blaikie
2d9d6fff7c DIEHash: Move header include to be first in the implementation file to flush out header inclusion ordering issues
llvm-svn: 194588
2013-11-13 18:07:27 +00:00
Richard Sandiford
1817f8f7b4 [SystemZ] Add the general form of BCR
At the moment this is just the MC support.

llvm-svn: 194585
2013-11-13 16:57:53 +00:00
Benjamin Kramer
24e9924c2b Move Delinearization pass into an anonymous namespace.
llvm-svn: 194582
2013-11-13 15:35:17 +00:00
Benjamin Kramer
3bed3b6cb7 Make sure LLVMLoadLibraryPermanently gets an extern "C" symbol.
Otherwise it's impossible to use it. Also don't include C++ headers in
a C header.

llvm-svn: 194581
2013-11-13 15:35:13 +00:00
Alexey Samsonov
927745059f FileCheck: fix matching of one check-prefix is a prefix of another
Summary:
Fix a case when "FileCheck --check-prefix=CHECK --check-prefix=CHECKER"
would silently ignore check-lines of the form:
  CHECKER: foo

Reviewers: dsanders

Reviewed By: dsanders

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2168

llvm-svn: 194577
2013-11-13 14:12:52 +00:00
Rafael Espindola
3c0d3eb4a9 Remove AllowQuotesInName and friends from MCAsmInfo.
Accepting quotes is a property of an assembler, not of an object file. For
example, ELF can support any names for sections and symbols, but the gnu
assembler only accepts quotes in some contexts and llvm-mc in a few more.

LLVM should not produce different symbols based on a guess about which assembler
will be reading the code it is printing.

llvm-svn: 194575
2013-11-13 14:01:59 +00:00
Rafael Espindola
3e07c35cd7 Don't call doFinalization from verifyFunction.
verifyFunction needs to call doInitialization to collect metadata and avoid
crashing when verifying debug info in a function.

But it should not call doFinalization since that is where the verifier will
check declarations, variables and aliases, which is not desirable when one
only wants to verify a function.

A possible cleanup would be to split the class into a ModuleVerifier and
FunctionVerifier.

Issue reported by Ilia Filippov. Patch by Michael Kruse.

llvm-svn: 194574
2013-11-13 13:44:11 +00:00
Vladimir Medic
97a94dc2fb Fix bug in .gpword directive parsing.
llvm-svn: 194570
2013-11-13 13:18:04 +00:00
Zoran Jovanovic
feadcc01d7 Support for microMIPS trap instruction with immediate operands.
llvm-svn: 194569
2013-11-13 13:15:03 +00:00
Alexey Samsonov
89a2c4d5df Fix -Wdelete-non-virtual-dtor warnings by making SampleProfile methods non-virtual
llvm-svn: 194568
2013-11-13 13:09:39 +00:00
Diego Novillo
7b4e2dda6b SampleProfileLoader pass. Initial setup.
This adds a new scalar pass that reads a file with samples generated
by 'perf' during runtime. The samples read from the profile are
incorporated and emmited as IR metadata reflecting that profile.

The profile file is assumed to have been generated by an external
profile source. The profile information is converted into IR metadata,
which is later used by the analysis routines to estimate block
frequencies, edge weights and other related data.

External profile information files have no fixed format, each profiler
is free to define its own. This includes both the on-disk representation
of the profile and the kind of profile information stored in the file.
A common kind of profile is based on sampling (e.g., perf), which
essentially counts how many times each line of the program has been
executed during the run.

The SampleProfileLoader pass is organized as a scalar transformation.
On startup, it reads the file given in -sample-profile-file to
determine what kind of profile it contains.  This file is assumed to
contain profile information for the whole application. The profile
data in the file is read and incorporated into the internal state of
the corresponding profiler.

To facilitate testing, I've organized the profilers to support two file
formats: text and native. The native format is whatever on-disk
representation the profiler wants to support, I think this will mostly
be bitcode files, but it could be anything the profiler wants to
support. To do this, every profiler must implement the
SampleProfile::loadNative() function.

The text format is mostly meant for debugging. Records are separated by
newlines, but each profiler is free to interpret records as it sees fit.
Profilers must implement the SampleProfile::loadText() function.

Finally, the pass will call SampleProfile::emitAnnotations() for each
function in the current translation unit. This function needs to
translate the loaded profile into IR metadata, which the analyzer will
later be able to use.

This patch implements the first steps towards the above design. I've
implemented a sample-based flat profiler. The format of the profile is
fairly simplistic. Each sampled function contains a list of relative
line locations (from the start of the function) together with a count
representing how many samples were collected at that line during
execution. I generate this profile using perf and a separate converter
tool.

Currently, I have only implemented a text format for these profiles. I
am interested in initial feedback to the whole approach before I send
the other parts of the implementation for review.

This patch implements:

- The SampleProfileLoader pass.
- The base ExternalProfile class with the core interface.
- A SampleProfile sub-class using the above interface. The profiler
  generates branch weight metadata on every branch instructions that
  matches the profiles.
- A text loader class to assist the implementation of
  SampleProfile::loadText().
- Basic unit tests for the pass.

Additionally, the patch uses profile information to compute branch
weights based on instruction samples.

This patch converts instruction samples into branch weights. It
does a fairly simplistic conversion:

Given a multi-way branch instruction, it calculates the weight of
each branch based on the maximum sample count gathered from each
target basic block.

Note that this assignment of branch weights is somewhat lossy and can be
misleading. If a basic block has more than one incoming branch, all the
incoming branches will get the same weight. In reality, it may be that
only one of them is the most heavily taken branch.

I will adjust this assignment in subsequent patches.

llvm-svn: 194566
2013-11-13 12:22:21 +00:00
Alexey Samsonov
1c2a79dbfa FileCheck: fix a bug with multiple --check-prefix options.
Summary:
This fixes a subtle bug in new FileCheck feature added
in r194343. When we search for the first satisfying check-prefix,
we should actually return the first encounter of some check-prefix as a
substring, even if it's not a part of valid check-line. Otherwise
"FileCheck --check-prefix=FOO --check-prefix=BAR" with check file:

  FOO not a vaild check-line
  FOO: foo
  BAR: bar

incorrectly accepted file:

  fog
  bar

as it skipped the first two encounters of FOO, matching only BAR: line.

Reviewers: arsenm, dsanders

Reviewed By: dsanders

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2166

llvm-svn: 194565
2013-11-13 11:56:22 +00:00