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81 Commits

Author SHA1 Message Date
Kostya Serebryany
acbc9cb577 [asan] add llvm-ish test for memset/etc instrumentation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206747 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-21 11:57:43 +00:00
Kostya Serebryany
40a9c0f58b [asan] one more workaround for PR17409: don't do BB-level coverage instrumentation if there are more than N (=1500) basic blocks. This makes ASanCoverage work on libjpeg_turbo/jchuff.c used by Chrome, which has 1824 BBs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206564 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-18 08:02:42 +00:00
Kostya Serebryany
8cc4741d85 [asan] add two new hidden compile-time flags for asan: asan-instrumentation-with-call-threshold and asan-memory-access-callback-prefix. This is part of the workaround for PR17409 (instrument huge functions with callbacks instead of inlined code). These flags will also help us experiment with kasan (kernel-asan) and clang 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206383 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-16 12:12:19 +00:00
Alexander Potapenko
90844c4778 [ASan] Add -asan-module to the ASan .ll tests. 
After the -asan pass had been split into -asan (function-level) and -asan-module (module-level) some of the
tests have silently stopped working, because they didn't instrument the globals anymore.
We've decided to have every test using both passes, irrespective of the presence of globals in it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204335 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-03-20 11:16:34 +00:00
Alexander Potapenko
d68ef1a8d7 [ASan] Do not instrument globals from the llvm.metadata section. 
Fixes https://code.google.com/p/address-sanitizer/issues/detail?id=279.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204331 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-03-20 10:48:34 +00:00
Evgeniy Stepanov
bf7cc396c6 AddressSanitizer instrumentation for MOV and MOVAPS. 
This is an initial version of *Sanitizer instrumentation of assembly code.

Patch by Yuri Gorshenin.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203908 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-03-14 08:58:04 +00:00
Tim Northover
ca396e391e 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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203559 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-03-11 10:48:52 +00:00
Kostya Serebryany
596d621b57 [asan] remove test that should have been removed in r202033 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202034 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-24 13:44:24 +00:00
Rafael Espindola
737c9f6005 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201700 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-19 17:23:20 +00:00
Rafael Espindola
3e0d3a45e5 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201688 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-19 15:49:46 +00:00
Rafael Espindola
070b5745ae Now that llvm always does the right thing with private, use it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201625 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-19 02:08:39 +00:00
Kostya Serebryany
8cab11a9f8 [asan] support for FreeBSD, LLVM part. patch by Viktor Kutuzov 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201067 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-02-10 07:37:04 +00:00
Kostya Serebryany
06fd4ed4c9 [asan] simplify a test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200378 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-29 07:35:43 +00:00
Kostya Serebryany
bd2c711cdd [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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199488 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 11:00:30 +00:00
Alexander Potapenko
ca523f4f3d [ASan] Fix the tests broken by r198018 to check for private linkage of ASan-generated globals. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198020 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-12-25 17:06:04 +00:00
Kostya Serebryany
26f1d1cbbc [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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197907 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-12-23 14:15:08 +00:00
Kostya Serebryany
daa1bf3b74 [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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@196568 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-12-06 09:00:17 +00:00
Manman Ren
bec50063a5 Debug Info: update testing cases to specify the debug info version number. 
We are going to drop debug info without a version number or with a different
version number, to make sure we don't crash when we see bitcode files with
different debug info metadata format.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195504 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-11-22 21:49:45 +00:00
Alexey Samsonov
64409ad8e3 [ASan] Fix PR17867 - make sure ASan doesn't crash if use-after-scope and use-after-return are combined. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195014 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-11-18 14:53:55 +00:00
Bob Wilson
4b8991424a Reapply "[asan] Poor man's coverage that works with ASan" 
I was able to successfully run a bootstrapped LTO build of clang with
r194701, so this change does not seem to be the cause of our failing
buildbots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194789 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-11-15 07:16:09 +00:00
Bob Wilson
2475da80ed Revert "[asan] Poor man's coverage that works with ASan" 
This reverts commit 194701. Apple's bootstrapped LTO builds have been failing,
and this change (along with compiler-rt 194702-194704) is the only thing on
the blamelist.  I will either reappy these changes or help debug the problem,
depending on whether this fixes the buildbots.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194780 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-11-15 03:28:22 +00:00
Kostya Serebryany
8cc5f7cd59 [asan] Poor man's coverage that works with ASan 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194701 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-11-14 13:27:41 +00:00
Kostya Serebryany
3386d25257 [asan] Optimize accesses to global arrays with constant index 
Summary:
Given a global array G[N], which is declared in this CU and has static initializer
avoid instrumenting accesses like G[i], where 'i' is a constant and 0<=i<N.
Also add a bit of stats.

This eliminates ~1% of instrumentations on SPEC2006
and also partially helps when asan is being run together with coverage.

Reviewers: samsonov

Reviewed By: samsonov

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1947

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192794 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-10-16 14:06:14 +00:00
Manman Ren
9e81c3bdb2 TBAA: handle scalar TBAA format and struct-path aware TBAA format. 
Remove the command line argument "struct-path-tbaa" since we should not depend
on command line argument to decide which format the IR file is using. Instead,
we check the first operand of the tbaa tag node, if it is a MDNode, we treat
it as struct-path aware TBAA format, otherwise, we treat it as scalar TBAA
format.

When clang starts to use struct-path aware TBAA format no matter whether
struct-path-tbaa is no, and we can auto-upgrade existing bc files, the support
for scalar TBAA format can be dropped.

Existing testing cases are updated to use the struct-path aware TBAA format.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191538 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-09-27 18:34:27 +00:00
Manman Ren
1ed2e1fb92 Debug Info Testing: update context from empty string to null. 
Context should be either null or MDNode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190267 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-09-08 03:11:54 +00:00
Manman Ren
1307103dff Debug Info Testing: updated to use NULL instead of "i32 0" in a few fields. 
Field 2 of DIType (Context), field 9 of DIDerivedType (TypeDerivedFrom),
field 12 of DICompositeType (ContainingType), fields 2, 7, 12 of DISubprogram
(Context, Type, ContainingType).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190205 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-09-06 21:03:58 +00:00
Manman Ren
6e3cd0ebe2 Debug Info: add an identifier field to DICompositeType. 
DICompositeType will have an identifier field at position 14. For now, the
field is set to null in DIBuilder.
For DICompositeTypes where the template argument field (the 13th field)
was optional, modify DIBuilder to make sure the template argument field is set.
Now DICompositeType has 15 fields.

Update DIBuilder to use NULL instead of "i32 0" for null value of a MDNode.
Update verifier to check that DICompositeType has 15 fields and the last
field is null or a MDString.

Update testing cases to include an extra field for DICompositeType.
The identifier field will be used by type uniquing so a front end can
genearte a DICompositeType with a unique identifer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189282 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-08-26 22:39:55 +00:00
Daniel Dunbar
24ec2e5a72 [tests] Cleanup initialization of test suffixes. 
- Instead of setting the suffixes in a bunch of places, just set one master
   list in the top-level config. We now only modify the suffix list in a few
   suites that have one particular unique suffix (.ml, .mc, .yaml, .td, .py).

 - Aside from removing the need for a bunch of lit.local.cfg files, this enables
   4 tests that were inadvertently being skipped (one in
   Transforms/BranchFolding, a .s file each in DebugInfo/AArch64 and
   CodeGen/PowerPC, and one in CodeGen/SI which is now failing and has been
   XFAILED).

 - This commit also fixes a bunch of config files to use config.root instead of
   older copy-pasted code.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188513 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-08-16 00:37:11 +00:00
Bill Wendling
55a1a590bf Change the linkage of these global values to 'internal'. 
The globals being generated here were given the 'private' linkage type. However,
this caused them to end up in different sections with the wrong prefix. E.g.,
they would be in the __TEXT,__const section with an 'L' prefix instead of an 'l'
(lowercase ell) prefix.

The problem is that the linker will eat a literal label with 'L'. If a weak
symbol is then placed into the __TEXT,__const section near that literal, then it
cannot distinguish between the literal and the weak symbol.

Part of the problems here was introduced because the address sanitizer converted
some C strings into constant initializers with trailing nuls. (Thus putting them
in the __const section with the wrong prefix.) The others were variables that
the address sanitizer created but simply had the wrong linkage type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187827 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-08-06 22:52:42 +00:00
Manman Ren
d513b4033f Debug Info: update testing cases to pass verifier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187362 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-07-29 18:12:58 +00:00
Rafael Espindola
f204228b78 Current batch of -disable-debug-info-verifier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187130 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-07-25 17:16:05 +00:00
Kostya Serebryany
d4429214a2 [asan] workaround for PR16277: don't instrument AllocaInstr with alignment more than the redzone size 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184928 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-06-26 09:49:52 +00:00
Kostya Serebryany
20985711c7 [asan] add option -asan-keep-uninstrumented-functions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184927 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-06-26 09:18:17 +00:00
David Blaikie
72dfb052ab Revert "Adding DIImportedModules to DIScopes." 
This reverts commit 342d92c7a0.

Turns out we're going with a different schema design to represent
DW_TAG_imported_modules so we won't need this extra field.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178215 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-03-28 02:44:59 +00:00
David Blaikie
342d92c7a0 Adding DIImportedModules to DIScopes. 
This is just the basic groundwork for supporting DW_TAG_imported_module but I
wanted to commit this before pushing support further into Clang or LLVM so that
this rather churny change is isolated from the rest of the work. The major
churn here is obviously adding another field (within the common DIScope prefix)
to all DIScopes (files, classes, namespaces, lexical scopes, etc). This should
be the last big churny change needed for DW_TAG_imported_module/using directive
support/PR14606.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178099 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-03-27 00:07:26 +00:00
David Blaikie
ebb5183a2f Remove unused field in DISubprogram 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177661 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-03-21 20:28:52 +00:00
Kostya Serebryany
5111627ac1 [asan] when creating string constants, set unnamed_attr and align 1 so that equal strings are merged by the linker. Observed up to 1% binary size reduction. Thanks to Anton Korobeynikov for the suggestion 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177264 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-03-18 09:38:39 +00:00
Kostya Serebryany
3797adb94f [asan] don't instrument functions with available_externally linkage. This saves a bit of compile time and reduces the number of redundant global strings generated by asan (https://code.google.com/p/address-sanitizer/issues/detail?id=167) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177250 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-03-18 07:33:49 +00:00
David Blaikie
b4cf0ab22b Split out filename & directory from DIFile to start generalizing over DIScopes 
This is the first step to making all DIScopes have a common metadata prefix (so
that things (using directives, for example) that can appear in any scope can be
added to that common prefix). DIFile is itself a DIScope so the common prefix
of all DIScopes cannot be a DIFile - instead it's the raw filename/directory
name pair.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177239 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-03-17 21:13:55 +00:00
Alexey Samsonov
b4ba5e68e1 [ASan] emit instrumentation for initialization order checking by default 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177063 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-03-14 12:38:58 +00:00
David Blaikie
e0805a992d Remove the unused 4th operand for DIFile debug info metadata 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176983 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-03-13 22:05:21 +00:00
Kostya Serebryany
8eec41fc77 Unify clang/llvm attributes for asan/tsan/msan (LLVM part) 
These are two related changes (one in llvm, one in clang).
LLVM: 
- rename address_safety => sanitize_address (the enum value is the same, so we preserve binary compatibility with old bitcode)
- rename thread_safety => sanitize_thread
- rename no_uninitialized_checks -> sanitize_memory

CLANG: 
- add __attribute__((no_sanitize_address)) as a synonym for __attribute__((no_address_safety_analysis))
- add __attribute__((no_sanitize_thread))
- add __attribute__((no_sanitize_memory))

for S in address thread memory
If -fsanitize=S is present and __attribute__((no_sanitize_S)) is not
set llvm attribute sanitize_S


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176075 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-02-26 06:58:09 +00:00
Kostya Serebryany
1479c9bb39 [asan] instrument invoke insns with noreturn attribute (as well as call insns) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175617 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-02-20 12:35:15 +00:00
Kostya Serebryany
6ecccdbb2b [asan] instrument memory accesses with unusual sizes 
This patch makes asan instrument memory accesses with unusual sizes (e.g. 5 bytes or 10 bytes), e.g. long double or
packed structures.
Instrumentation is done with two 1-byte checks
(first and last bytes) and if the error is found
__asan_report_load_n(addr, real_size) or
__asan_report_store_n(addr, real_size)
is called.

Also, call these two new functions in memset/memcpy
instrumentation.

asan-rt part will follow.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175507 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-02-19 11:29:21 +00:00
Kostya Serebryany
605ff6655b [asan] revert r175266 as it breaks code with packed structures. supporting long double will require a more general solution 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175442 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-02-18 13:47:02 +00:00
Kostya Serebryany
74ecd214e2 [asan] support long double on 64-bit. See https://code.google.com/p/address-sanitizer/issues/detail?id=151 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175266 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-02-15 12:46:06 +00:00
Kostya Serebryany
f28e3211a6 [asan] fix tests for the new ABI 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174959 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-02-12 11:14:24 +00:00
Kostya Serebryany
63f0846f1e [asan] adaptive redzones for globals (the larger the global the larger is the redzone) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173335 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-01-24 10:35:40 +00:00
Alexey Samsonov
19cd7e9ce2 ASan: wrap mapping scale and offset in a struct and make it a member of ASan passes. Add test for non-default mapping scale and offset. No functionality change 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172610 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-01-16 13:23:28 +00:00
Alexey Samsonov
1c8b825c43 [ASan] Fix lifetime intrinsics handling. Now for each intrinsic we check if it describes one of 'interesting' allocas. Assume that allocas can go through casts and phi-nodes before apperaring as llvm.lifetime arguments 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171153 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-12-27 08:50:58 +00:00