Commit Graph

92 Commits

Author SHA1 Message Date
Nuno Lopes 31617266ea remove a bunch of unused private methods
found with a smarter version of -Wunused-member-function that I'm playwing with.
Appologies in advance if I removed someone's WIP code.

 include/llvm/CodeGen/MachineSSAUpdater.h            |    1 
 include/llvm/IR/DebugInfo.h                         |    3 
 lib/CodeGen/MachineSSAUpdater.cpp                   |   10 --
 lib/CodeGen/PostRASchedulerList.cpp                 |    1 
 lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp    |   10 --
 lib/IR/DebugInfo.cpp                                |   12 --
 lib/MC/MCAsmStreamer.cpp                            |    2 
 lib/Support/YAMLParser.cpp                          |   39 ---------
 lib/TableGen/TGParser.cpp                           |   16 ---
 lib/TableGen/TGParser.h                             |    1 
 lib/Target/AArch64/AArch64TargetTransformInfo.cpp   |    9 --
 lib/Target/ARM/ARMCodeEmitter.cpp                   |   12 --
 lib/Target/ARM/ARMFastISel.cpp                      |   84 --------------------
 lib/Target/Mips/MipsCodeEmitter.cpp                 |   11 --
 lib/Target/Mips/MipsConstantIslandPass.cpp          |   12 --
 lib/Target/NVPTX/NVPTXISelDAGToDAG.cpp              |   21 -----
 lib/Target/NVPTX/NVPTXISelDAGToDAG.h                |    2 
 lib/Target/PowerPC/PPCFastISel.cpp                  |    1 
 lib/Transforms/Instrumentation/AddressSanitizer.cpp |    2 
 lib/Transforms/Instrumentation/BoundsChecking.cpp   |    2 
 lib/Transforms/Instrumentation/MemorySanitizer.cpp  |    1 
 lib/Transforms/Scalar/LoopIdiomRecognize.cpp        |    8 -
 lib/Transforms/Scalar/SCCP.cpp                      |    1 
 utils/TableGen/CodeEmitterGen.cpp                   |    2 
 24 files changed, 2 insertions(+), 261 deletions(-)

llvm-svn: 204560
2014-03-23 17:09:26 +00:00
Evgeniy Stepanov 2275a01a44 Set debug info for instructions inserted in SplitBlockAndInsertIfThen.
llvm-svn: 204230
2014-03-19 12:56:38 +00:00
Evgeniy Stepanov 302964ee92 [msan] Origin tracking with history.
LLVM part of MSan implementation of advanced origin tracking,
when we record not only creation point, but all locations where
an uninitialized value was stored to memory, too.

llvm-svn: 204151
2014-03-18 13:30:56 +00:00
Evgeniy Stepanov 2aac07349d [msan] Kill -msan-store-clean-origin flag.
Not only is it slower than the alternative, but also subtly broken.
This commit does not change the default behavior.

llvm-svn: 204131
2014-03-18 09:47:06 +00:00
Evgeniy Stepanov dba42d6652 [msan] Remove unused code.
llvm-svn: 204125
2014-03-18 08:29:42 +00:00
Evgeniy Stepanov 7ab838eb56 [msan] Fix handling of byval arguments in VarArg calls.
llvm-svn: 203794
2014-03-13 13:17:11 +00:00
Tim Northover e94a518a22 IR: add a second ordering operand to cmpxhg for failure
The syntax for "cmpxchg" should now look something like:

	cmpxchg i32* %addr, i32 42, i32 3 acquire monotonic

where the second ordering argument gives the required semantics in the case
that no exchange takes place. It should be no stronger than the first ordering
constraint and cannot be either "release" or "acq_rel" (since no store will
have taken place).

rdar://problem/15996804

llvm-svn: 203559
2014-03-11 10:48:52 +00:00
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
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 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
Evgeniy Stepanov 77be532f71 [msan] Handle X86 SIMD bitshift intrinsics.
llvm-svn: 202712
2014-03-03 13:47:42 +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 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
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
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
Evgeniy Stepanov cb5bdffc4e [msan] Propagate condition origin in select instruction.
llvm-svn: 195349
2013-11-21 12:00:24 +00:00
Evgeniy Stepanov 585813e33d [msan] Fast path optimization for wrap-indirect-calls feature of MemorySanitizer.
Indirect call wrapping helps MSanDR (dynamic instrumentation companion tool
for MSan) to catch all cases where execution leaves a compiler-instrumented
module by allowing the tool to rewrite targets of indirect calls.

This change is an optimization that skips wrapping for calls when target is
inside the current module. This relies on the linker providing symbols at the
begin and end of the module code (or code + data, does not really matter).
Gold linker provides such symbols by default. GNU (BFD) linker needs a link
flag: -Wl,--defsym=__executable_start=0.

More info:
https://code.google.com/p/memory-sanitizer/wiki/MSanDR#Native_exec

llvm-svn: 194697
2013-11-14 12:29:04 +00:00
Evgeniy Stepanov 560e089355 [msan] Propagate origin for insertvalue, extractvalue.
llvm-svn: 194374
2013-11-11 13:37:10 +00:00
Evgeniy Stepanov 21a9c93a4d [msan] Use zero-extension in shadow cast by default.
Switch to sign-extension in r192575 caused 7% perf loss on 482.sphinx3.

llvm-svn: 192882
2013-10-17 10:53:50 +00:00
Evgeniy Stepanov be83d8f693 [msan] Instrument x86.*_cvt* intrinsics.
Currently MSan checks that arguments of *cvt* intrinsics are fully initialized.
That's too much to ask: some of them only operate on lower half, or even
quarter, of the input register.

llvm-svn: 192599
2013-10-14 15:16:25 +00:00
Evgeniy Stepanov 9b5517b127 [msan] Fix handling of scalar select of vectors.
llvm-svn: 192575
2013-10-14 09:52:09 +00:00
Evgeniy Stepanov 32be0340f5 [msan] Fix -Wreturn-type warnings in non-self-hosted build.
llvm-svn: 191361
2013-09-25 08:56:00 +00:00
Evgeniy Stepanov 5522a70674 [msan] Handling of atomic load/store, atomic rmw, cmpxchg.
llvm-svn: 191287
2013-09-24 11:20:27 +00:00
Evgeniy Stepanov 37b8645480 [msan] Wrap indirect functions.
Adds a flag to the MemorySanitizer pass that enables runtime rewriting of
indirect calls. This is part of MSanDR implementation and is needed to return
control to the DynamiRio-based helper tool on transition between instrumented
and non-instrumented modules. Disabled by default.

llvm-svn: 191006
2013-09-19 15:22:35 +00:00
Evgeniy Stepanov 604293fbb4 [msan] Check return value of main().
llvm-svn: 190782
2013-09-16 13:24:32 +00:00
Evgeniy Stepanov 0435ecd18f [msan] Add source file:line to stack origin reports.
Compiler part.

llvm-svn: 190689
2013-09-13 12:54:49 +00:00
Evgeniy Stepanov e95d37c81d [msan] Fix handling of select with struct arguments.
llvm-svn: 189796
2013-09-03 13:05:29 +00:00
Evgeniy Stepanov 566f591404 [msan] Fix select instrumentation.
Select condition shadow was being ignored resulting in false negatives.
This change OR-s sign-extended condition shadow into the result shadow.

llvm-svn: 189785
2013-09-03 10:04:11 +00:00
Evgeniy Stepanov d42863cc1f [msan] Fix handling of va_arg overflow area on x86_64.
The code was erroneously reading overflow area shadow from the TLS slot,
bypassing the local copy. Reading shadow directly from TLS is wrong, because
it can be overwritten by a nested vararg call, if that happens before va_start.

llvm-svn: 189104
2013-08-23 12:11:00 +00:00
Alexey Samsonov e4b5fb8851 Add SpecialCaseList::createOrDie() factory and use it in sanitizer passes
llvm-svn: 188169
2013-08-12 11:46:09 +00:00
Peter Collingbourne 015370e23a Rename BlackList class to SpecialCaseList and move it to Transforms/Utils.
Differential Revision: http://llvm-reviews.chandlerc.com/D1089

llvm-svn: 185975
2013-07-09 22:02:49 +00:00
Evgeniy Stepanov dc6d7eb860 [msan] Unpoison stack allocations and undef values in blacklisted functions.
This changes behavior of -msan-poison-stack=0 flag from not poisoning stack
allocations to actively unpoisoning them.

llvm-svn: 185538
2013-07-03 14:39:14 +00:00
Evgeniy Stepanov 888385e40f [msan] Handle mixed track-origins and keep-going settings (llvm part).
Before this change, each module defined a weak_odr global __msan_track_origins 
with a value of 1 if origin tracking is enabled, 0 if disabled. If there are 
modules with different values, any of them may win. If 0 wins, and there is at 
least one module with 1, the program will most likely crash.

With this change, __msan_track_origins is only emitted if origin tracking is 
on. Then runtime library detects if there is at least one module with origin 
tracking, and enables runtime support for it.

llvm-svn: 182997
2013-05-31 12:04:29 +00:00
Evgeniy Stepanov fca012334b [msan] Fix argument shadow alignment.
llvm-svn: 182771
2013-05-28 13:07:43 +00:00
Evgeniy Stepanov ebd7f8e7ef [msan] A no-op implementation of VarArg handling.
This stuff is used on platforms where MSan does not have a proper VarArg
implementation (anything other than x86_64 at the moment).

llvm-svn: 182375
2013-05-21 12:27:47 +00:00
Evgeniy Stepanov 1e7643243d [msan] Switch TLS globals to initial-exec model.
They are always defined in the main executable.

llvm-svn: 181994
2013-05-16 09:14:05 +00:00
Dmitri Gribenko 9bf66a5fd0 Fix a documentation warning: \bried -> \brief
llvm-svn: 181551
2013-05-09 21:16:18 +00:00
Evgeniy Stepanov a9a962cad8 [msan] Add an option to disable poisoning of shadow for undef values.
llvm-svn: 177630
2013-03-21 09:38:26 +00:00
Evgeniy Stepanov 00062b4498 [msan] Implement sanitize_memory attribute.
Shadow checks are disabled and memory loads always produce fully initialized
values in functions that don't have a sanitize_memory attribute. Value and
argument shadow is propagated as usual.

This change also updates blacklist behaviour to match the above.

llvm-svn: 176247
2013-02-28 11:25:14 +00:00
Evgeniy Stepanov 4c9300e630 Remove unused leftover declarations.
llvm-svn: 176240
2013-02-28 08:42:11 +00:00
Edwin Vane 82f80d4967 Fixing warnings revealed by gcc release build
Fixed set-but-not-used warnings.

Reviewer: gribozavr
llvm-svn: 173810
2013-01-29 17:42:24 +00:00
Evgeniy Stepanov 6f85ef300d [msan] Mostly disable msan-handle-icmp-exact.
It is way too slow. Change the default option value to 0.
Always do exact shadow propagation for unsigned ICmp with constants, it is
cheap (under 1% cpu time) and required for correctness.

llvm-svn: 173682
2013-01-28 11:42:28 +00:00
Evgeniy Stepanov 52c7b1b98f Revert r173678.
Broken tests.

llvm-svn: 173679
2013-01-28 09:18:40 +00:00
Evgeniy Stepanov 5ec2ff57e9 [msan] Make msan-handle-icmp-exact=0 by default.
50% slowdown on one of the specs.

llvm-svn: 173678
2013-01-28 09:15:15 +00:00
Evgeniy Stepanov 2cb0fa10c2 [msan] A comment on ICmp handling logic.
llvm-svn: 173453
2013-01-25 15:35:29 +00:00
Evgeniy Stepanov fac8403249 [msan] Implement exact shadow propagation for relational ICmp.
Only for integers, pointers, and vectors of those. No floats.
Instrumentation seems very heavy, and may need to be replaced
with some approximation in the future.

llvm-svn: 173452
2013-01-25 15:31:10 +00:00
Bill Wendling 430fa9bfb3 Use the AttributeSet when removing multiple attributes. Use Attribute::AttrKind
when removing one attribute. This further encapsulates the use of the attributes.

llvm-svn: 173214
2013-01-23 00:45:55 +00:00
Evgeniy Stepanov dcf6bcb904 [msan] Export the value of msan-keep-going flag for the runtime.
llvm-svn: 173156
2013-01-22 13:26:53 +00:00