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Author SHA1 Message Date
Ahmed Charles 56440fd820 Replace OwningPtr<T> with std::unique_ptr<T>. 
This compiles with no changes to clang/lld/lldb with MSVC and includes
overloads to various functions which are used by those projects and llvm
which have OwningPtr's as parameters. This should allow out of tree
projects some time to move. There are also no changes to libs/Target,
which should help out of tree targets have time to move, if necessary.

llvm-svn: 203083
 2014-03-06 05:51:42 +00:00
Chandler Carruth 7da14f1ab9 [Layering] Move InstVisitor.h into the IR library as it is pretty 
obviously coupled to the IR.

llvm-svn: 203064
 2014-03-06 03:23:41 +00:00
Chandler Carruth 9a4c9e597b [Layering] Move DebugInfo.h into the IR library where its implementation 
already lives.

llvm-svn: 203046
 2014-03-06 00:46:21 +00:00
Chandler Carruth 12664a0b17 [Layering] Move DIBuilder.h into the IR library where its implementation 
already lives.

llvm-svn: 203038
 2014-03-06 00:22:06 +00:00
Chandler Carruth 9205140772 [Layering] Move DebugLoc.h into the IR library. The implementation 
already lived there and it is where it belongs -- this is the in-memory
debug location representation.

This is just cleanup -- Modules can actually cope with this, but that
doesn't make it right. After chatting with folks that have out-of-tree
stuff, going ahead and moving the rest of the headers seems preferable.

llvm-svn: 202960
 2014-03-05 10:30:38 +00:00
Craig Topper 3e4c697ca1 [C++11] Add 'override' keyword to virtual methods that override their base class. 
llvm-svn: 202953
 2014-03-05 09:10:37 +00:00
Chandler Carruth 452a00747e [Modules] Move the TargetFolder into the Analysis library. Historically, 
this would have been required because of the use of DataLayout, but that
has moved into the IR proper. It is still required because this folder
uses the constant folding in the analysis library (which uses the
datalayout) as the more aggressive basis of its folder.

llvm-svn: 202832
 2014-03-04 11:59:06 +00:00
Chandler Carruth a4ea269f15 [Modules] Move ValueMap to the IR library. While this class does not 
directly care about the Value class (it is templated so that the key can
be any arbitrary Value subclass), it is in fact concretely tied to the
Value class through the ValueHandle's CallbackVH interface which relies
on the key type being some Value subclass to establish the value handle
chain.

Ironically, the unittest is already in the right library.

llvm-svn: 202824
 2014-03-04 11:26:31 +00:00
Chandler Carruth 219b89b987 [Modules] Move CallSite into the IR library where it belogs. It is 
abstracting between a CallInst and an InvokeInst, both of which are IR
concepts.

llvm-svn: 202816
 2014-03-04 11:01:28 +00:00
Chandler Carruth 8394857f43 [Modules] Move InstIterator out of the Support library, where it had no 
business.

This header includes Function and BasicBlock and directly uses the
interfaces of both classes. It has to do with the IR, it even has that
in the name. =] Put it in the library it belongs to.

This is one step toward making LLVM's Support library survive a C++
modules bootstrap.

llvm-svn: 202814
 2014-03-04 10:30:26 +00:00
Evgeniy Stepanov 77be532f71 [msan] Handle X86 SIMD bitshift intrinsics. 
llvm-svn: 202712
 2014-03-03 13:47:42 +00:00
Benjamin Kramer b6d0bd48bd [C++11] Replace llvm::next and llvm::prior with std::next and std::prev. 
Remove the old functions.

llvm-svn: 202636
 2014-03-02 12:27:27 +00:00
Benjamin Kramer 3a377bce4e Now that we have C++11, turn simple functors into lambdas and remove a ton of boilerplate. 
No intended functionality change.

llvm-svn: 202588
 2014-03-01 11:47:00 +00:00
Kostya Serebryany cb3f6e164b [asan] fix a pair of silly typos 
llvm-svn: 202391
 2014-02-27 13:13:59 +00:00
Kostya Serebryany ec34665de9 [asan] disable asan-detect-invalid-pointer-pair (was enabled by mistake) 
llvm-svn: 202390
 2014-02-27 12:56:20 +00:00
Kostya Serebryany 796f6557bf [asan] *experimental* implementation of invalid-pointer-pair detector (finds when two unrelated pointers are compared or subtracted). This implementation has both false positives and false negatives and is not tuned for performance. A bug report for a proper implementation will follow. 
llvm-svn: 202389
 2014-02-27 12:45:36 +00:00
Rafael Espindola 935125126c Make DataLayout a plain object, not a pass. 
Instead, have a DataLayoutPass that holds one. This will allow parts of LLVM
don't don't handle passes to also use DataLayout.

llvm-svn: 202168
 2014-02-25 17:30:31 +00:00
Rafael Espindola aeff8a9c05 Make some DataLayout pointers const. 
No functionality change. Just reduces the noise of an upcoming patch.

llvm-svn: 202087
 2014-02-24 23:12:18 +00:00
Rafael Espindola 90c7f1cc16 Replace the F_Binary flag with a F_Text one. 
After this I will set the default back to F_None. The advantage is that
before this patch forgetting to set F_Binary would corrupt a file on windows.
Forgetting to set F_Text produces one that cannot be read in notepad, which
is a better failure mode :-)

llvm-svn: 202052
 2014-02-24 18:20:12 +00:00
Rafael Espindola 7dbcdd08c2 Don't make F_None the default. 
This will make it easier to switch the default to being binary files.

llvm-svn: 202042
 2014-02-24 15:07:20 +00:00
Kostya Serebryany cc92c79531 [asan] simplify the code that compute the shadow offset; get rid of two internal flags that allowed to override it. The tests pass, but still this change might break asan on some platform not covered by tests. If you see this, please submit a fix with a test. 
llvm-svn: 202033
 2014-02-24 13:40:24 +00:00
Rafael Espindola 37dc9e19f5 Rename many DataLayout variables from TD to DL. 
I am really sorry for the noise, but the current state where some parts of the
code use TD (from the old name: TargetData) and other parts use DL makes it
hard to write a patch that changes where those variables come from and how
they are passed along.

llvm-svn: 201827
 2014-02-21 00:06:31 +00:00
Rafael Espindola daeafb4c2a Add back r201608, r201622, r201624 and r201625 
r201608 made llvm corretly handle private globals with MachO. r201622 fixed
a bug in it and r201624 and r201625 were changes for using private linkage,
assuming that llvm would do the right thing.

They all got reverted because r201608 introduced a crash in LTO. This patch
includes a fix for that. The issue was that TargetLoweringObjectFile now has
to be initialized before we can mangle names of private globals. This is
trivially true during the normal codegen pipeline (the asm printer does it),
but LTO has to do it manually.

llvm-svn: 201700
 2014-02-19 17:23:20 +00:00
Rafael Espindola 2173603825 This reverts commit r201625 and r201624. 
Since r201608 got reverted, it is not safe to use private linkage in these cases
until it is committed back.

llvm-svn: 201688
 2014-02-19 15:49:46 +00:00
Rafael Espindola 8b27c4edc6 Now that llvm always does the right thing with private, use it. 
llvm-svn: 201625
 2014-02-19 02:08:39 +00:00
Kostya Serebryany 8baa386670 [asan] support for FreeBSD, LLVM part. patch by Viktor Kutuzov 
llvm-svn: 201067
 2014-02-10 07:37:04 +00:00
Bob Wilson 055a0b4ca2 Fix a bug in gcov instrumentation introduced by r195513. <rdar://15930350> 
The entry block of a function starts with all the static allocas. The change
in r195513 splits the block before those allocas, which has the effect of
turning them into dynamic allocas. That breaks all sorts of things. Change to
split after the initial allocas, and also add a comment explaining why the
block is split.

llvm-svn: 200515
 2014-01-31 05:24:01 +00:00
Alp Toker cb40291100 Fix known typos 
Sweep the codebase for common typos. Includes some changes to visible function
names that were misspelt.

llvm-svn: 200018
 2014-01-24 17:20:08 +00:00
Kostya Serebryany 714c67c31e [asan] extend asan-coverage (still experimental). 
- add a mode for collecting per-block coverage (-asan-coverage=2).
   So far the implementation is naive (all blocks are instrumented),
   the performance overhead on top of asan could be as high as 30%.
 - Make sure the one-time calls to __sanitizer_cov are moved to function buttom,
   which in turn required to copy the original debug info into the call insn.

Here is the performance data on SPEC 2006
(train data, comparing asan with asan-coverage={0,1,2}):

                             asan+cov0     asan+cov1      diff 0-1    asan+cov2       diff 0-2      diff 1-2
       400.perlbench,        65.60,        65.80,         1.00,        76.20,         1.16,         1.16
           401.bzip2,        65.10,        65.50,         1.01,        75.90,         1.17,         1.16
             403.gcc,         1.64,         1.69,         1.03,         2.04,         1.24,         1.21
             429.mcf,        21.90,        22.60,         1.03,        23.20,         1.06,         1.03
           445.gobmk,       166.00,       169.00,         1.02,       205.00,         1.23,         1.21
           456.hmmer,        88.30,        87.90,         1.00,        91.00,         1.03,         1.04
           458.sjeng,       210.00,       222.00,         1.06,       258.00,         1.23,         1.16
      462.libquantum,         1.73,         1.75,         1.01,         2.11,         1.22,         1.21
         464.h264ref,       147.00,       152.00,         1.03,       160.00,         1.09,         1.05
         471.omnetpp,       115.00,       116.00,         1.01,       140.00,         1.22,         1.21
           473.astar,       133.00,       131.00,         0.98,       142.00,         1.07,         1.08
       483.xalancbmk,       118.00,       120.00,         1.02,       154.00,         1.31,         1.28
            433.milc,        19.80,        20.00,         1.01,        20.10,         1.02,         1.01
            444.namd,        16.20,        16.20,         1.00,        17.60,         1.09,         1.09
          447.dealII,        41.80,        42.20,         1.01,        43.50,         1.04,         1.03
          450.soplex,         7.51,         7.82,         1.04,         8.25,         1.10,         1.05
          453.povray,        14.00,        14.40,         1.03,        15.80,         1.13,         1.10
             470.lbm,        33.30,        34.10,         1.02,        34.10,         1.02,         1.00
         482.sphinx3,        12.40,        12.30,         0.99,        13.00,         1.05,         1.06

llvm-svn: 199488
 2014-01-17 11:00:30 +00:00
Evgeniy Stepanov 13665367a0 [asan] Remove -fsanitize-address-zero-base-shadow command line 
flag from clang, and disable zero-base shadow support on all platforms
where it is not the default behavior.

- It is completely unused, as far as we know.
- It is ABI-incompatible with non-zero-base shadow, which means all
objects in a process must be built with the same setting. Failing to
do so results in a segmentation fault at runtime.
- It introduces a backward dependency of compiler-rt on user code,
which is uncommon and complicates testing.

This is the LLVM part of a larger change.

llvm-svn: 199371
 2014-01-16 10:19:12 +00:00
Chandler Carruth 9aca918df9 Move the LLVM IR asm writer header files into the IR directory, as they 
are part of the core IR library in order to support dumping and other
basic functionality.

Rename the 'Assembly' include directory to 'AsmParser' to match the
library name and the only functionality left their -- printing has been
in the core IR library for quite some time.

Update all of the #includes to match.

All of this started because I wanted to have the layering in good shape
before I started adding support for printing LLVM IR using the new pass
infrastructure, and commandline support for the new pass infrastructure.

llvm-svn: 198688
 2014-01-07 12:34:26 +00:00
Chandler Carruth 8a8cd2bab9 Re-sort all of the includes with ./utils/sort_includes.py so that 
subsequent changes are easier to review. About to fix some layering
issues, and wanted to separate out the necessary churn.

Also comment and sink the include of "Windows.h" in three .inc files to
match the usage in Memory.inc.

llvm-svn: 198685
 2014-01-07 11:48:04 +00:00
Alexander Potapenko 4f0335f863 [ASan] Fix the test for __asan_gen_ globals and actually fix http://llvm.org/bugs/show_bug.cgi?id=17976 
by setting the correct linkage (as stated in the bug).

llvm-svn: 198018
 2013-12-25 16:46:27 +00:00
Alexander Potapenko daf96ae81b [ASan] Make sure none of the __asan_gen_ global strings end up in the symbol table, add a test. 
This should fix http://llvm.org/bugs/show_bug.cgi?id=17976
Another test checking for the global variables' locations and prefixes on Darwin will be committed separately.

llvm-svn: 198017
 2013-12-25 14:22:15 +00:00
Kostya Serebryany 530e207d8a [asan] don't unpoison redzones on function exit in use-after-return mode. 
Summary:
Before this change the instrumented code before Ret instructions looked like:
  <Unpoison Frame Redzones>
  if (Frame != OriginalFrame) // I.e. Frame is fake
     <Poison Complete Frame>

Now the instrumented code looks like:
  if (Frame != OriginalFrame) // I.e. Frame is fake
     <Poison Complete Frame>
  else
     <Unpoison Frame Redzones>

Reviewers: eugenis

Reviewed By: eugenis

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2458

llvm-svn: 197907
 2013-12-23 14:15:08 +00:00
Kostya Serebryany ff7bde1582 [asan] produce fewer stores when poisoning stack shadow 
llvm-svn: 197904
 2013-12-23 09:24:36 +00:00
Evgeniy Stepanov a284e559d7 [dfsan] Simplify code after r197677. 
llvm-svn: 197679
 2013-12-19 14:37:03 +00:00
Evgeniy Stepanov a9164e9e2a Add an explicit insert point argument to SplitBlockAndInsertIfThen. 
Currently SplitBlockAndInsertIfThen requires that branch condition is an
Instruction itself, which is very inconvenient, because it is sometimes an
Operator, or even a Constant.

llvm-svn: 197677
 2013-12-19 13:29:56 +00:00
Reid Kleckner 30b2a9a59f [asan] Fix the coverage.cc test broken by r196939 
It was failing because ASan was adding all of the following to one
function:
- dynamic alloca
- stack realignment
- inline asm

This patch avoids making the static alloca dynamic when coverage is
used.

ASan should probably not be inserting empty inline asm blobs to inhibit
duplicate tail elimination.

llvm-svn: 196973
 2013-12-10 21:49:28 +00:00
NAKAMURA Takumi 396d4d3c7e Add proper dependencies to LLVMBuild.txt in llvm/lib. 
I'll prune redundant deps in LLVMBuild.txt, later.

llvm-svn: 196881
 2013-12-10 05:39:34 +00:00
Kostya Serebryany 4fb7801b3f [asan] rewrite asan's stack frame layout 
Summary:
Rewrite asan's stack frame layout.
First, most of the stack layout logic is moved into a separte file
to make it more testable and (potentially) useful for other projects.
Second, make the frames more compact by using adaptive redzones
(smaller for small objects, larger for large objects).
Third, try to minimized gaps due to large alignments (this is hypothetical since
today we don't see many stack vars aligned by more than 32).

The frames indeed become more compact, but I'll still need to run more benchmarks
before committing, but I am sking for review now to get early feedback.

This change will be accompanied by a trivial change in compiler-rt tests
to match the new frame sizes.

Reviewers: samsonov, dvyukov

Reviewed By: samsonov

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2324

llvm-svn: 196568
 2013-12-06 09:00:17 +00:00
Kostya Serebryany 2460c3fc73 [tsan] fix PR18146: sometimes a variable written into vptr could have an integer type (after other optimizations) 
llvm-svn: 196507
 2013-12-05 15:03:02 +00:00
Yuchen Wu c15bf89122 llvm-cov: Replace size() with empty() in bool check. 
llvm-svn: 196400
 2013-12-04 19:18:23 +00:00
Daniel Jasper 87a24d5c27 Un-revert r196358: "llvm-cov: Added support for function checksums." 
And add the proper fix.

llvm-svn: 196367
 2013-12-04 08:57:17 +00:00
Daniel Jasper c176b5d1d6 Revert r196358: "llvm-cov: Added support for function checksums." 
This currently breaks clang/test/CodeGen/code-coverage.c. The root cause
is that the newly introduced access to Funcs[j] is out of bounds.

llvm-svn: 196365
 2013-12-04 08:23:33 +00:00
Yuchen Wu 06655f3570 llvm-cov: Added support for function checksums. 
The function checksums are hashed from the concatenation of the function
name and line number.

llvm-svn: 196358
 2013-12-04 06:00:17 +00:00
Kostya Serebryany 08b9cf56be [tsan] fix instrumentation of vector vptr updates (https://code.google.com/p/thread-sanitizer/issues/detail?id=43) 
llvm-svn: 196079
 2013-12-02 08:07:15 +00:00
Yuchen Wu c87ca32163 llvm-cov: Split entry blocks in GCNOProfiling.cpp. 
gcov expects every function to contain an entry block that
unconditionally branches into the next block. clang does not implement
basic blocks in this manner, so gcov did not output correct branch info
if the entry block branched to multiple blocks.

This change splits every function's entry block into an empty block and
a block with the rest of the instructions. The instrumentation code will
take care of the rest.

llvm-svn: 195513
 2013-11-22 23:07:45 +00:00
Peter Collingbourne 0be79e1ade Introduce two command-line flags for the instrumentation pass to control whether the labels of pointers should be ignored in load and store instructions 
The new command line flags are -dfsan-ignore-pointer-label-on-store and -dfsan-ignore-pointer-label-on-load. Their default value matches the current labelling scheme.

Additionally, the function __dfsan_union_load is marked as readonly.

Patch by Lorenzo Martignoni!

Differential Revision: http://llvm-reviews.chandlerc.com/D2187

llvm-svn: 195382
 2013-11-21 23:20:54 +00:00
Evgeniy Stepanov cb5bdffc4e [msan] Propagate condition origin in select instruction. 
llvm-svn: 195349
 2013-11-21 12:00:24 +00:00