699ac28aa5
[asan] instrument invoke insns with noreturn attribute (as well as call insns)
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llvm-svn: 175617
2013-02-20 12:35:15 +00:00
3ece9beaf1
[asan] instrument memory accesses with unusual sizes
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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.
llvm-svn: 175507
2013-02-19 11:29:21 +00:00
7ca384bc1a
[asan] revert r175266 as it breaks code with packed structures. supporting long double will require a more general solution
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llvm-svn: 175442
2013-02-18 13:47:02 +00:00
a968568165
[asan] support long double on 64-bit. See https://code.google.com/p/address-sanitizer/issues/detail?id=151
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llvm-svn: 175266
2013-02-15 12:46:06 +00:00
e2e32b32e8
[asan] fix tests for the new ABI
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llvm-svn: 174959
2013-02-12 11:14:24 +00:00
87191f6221
[asan] adaptive redzones for globals (the larger the global the larger is the redzone)
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llvm-svn: 173335
2013-01-24 10:35:40 +00:00
1345d35e40
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
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llvm-svn: 172610
2013-01-16 13:23:28 +00:00
29dd7f2090
[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
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llvm-svn: 171153
2012-12-27 08:50:58 +00:00
3d43b63a6e
Improve debug info generated with enabled AddressSanitizer.
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When ASan replaces <alloca instruction> with
<offset into a common large alloca>, it should also patch
llvm.dbg.declare calls and replace debug info descriptors to mark
that we've replaced alloca with a value that stores an address
of the user variable, not the user variable itself.
See PR11818 for more context.
llvm-svn: 169984
2012-12-12 14:31:53 +00:00
261177a1e1
ASan: add initial support for handling llvm.lifetime intrinsics in ASan - emit calls into runtime library that poison memory for local variables when their lifetime is over and unpoison memory when their lifetime begins.
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llvm-svn: 169200
2012-12-04 01:34:23 +00:00
633bf93fb8
[asan] when checking the noreturn attribute on the call, also check it on the callee
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llvm-svn: 168861
2012-11-29 08:57:20 +00:00
dfe9e7933e
[asan] Split AddressSanitizer into two passes (FunctionPass, ModulePass), LLVM part. This requires a clang part which will follow.
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llvm-svn: 168781
2012-11-28 10:31:36 +00:00
dc4cb2b736
[asan] don't instrument linker-initialized globals even with external linkage in -asan-initialization-order mode
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llvm-svn: 168367
2012-11-20 13:11:32 +00:00
b3bd605ffa
[asan] make sure that linker-initialized globals (non-extern) are not instrumented even in -asan-initialization-order mode. This time with a test
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llvm-svn: 168366
2012-11-20 13:00:01 +00:00
28d0694c27
[asan] don't instrument globals that we've created ourselves (reduces the binary size a bit)
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llvm-svn: 167230
2012-11-01 13:42:40 +00:00
0995994989
[asan] make sure asan erases old unused allocas after it created a new one. This became important after the recent move from ModulePass to FunctionPass because no cleanup is happening after asan pass any more.
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llvm-svn: 166267
2012-10-19 06:20:53 +00:00
19ab3d1f6a
[asan] fix a test
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llvm-svn: 165938
2012-10-15 14:30:30 +00:00
91ce36c986
Revert 'Fix a typo 'iff' => 'if''. iff is an abreviation of if and only if. See: http://en.wikipedia.org/wiki/If_and_only_if Commit 164767
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llvm-svn: 164768
2012-09-27 10:14:43 +00:00
721cffd53a
Fix a typo 'iff' => 'if'
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llvm-svn: 164767
2012-09-27 09:59:43 +00:00
f4be019fba
[asan] add code to detect global initialization fiasco in C/C++. The sub-pass is off by default for now. Patch by Reid Watson. Note: this patch changes the interface between LLVM and compiler-rt parts of asan. The corresponding patch to compiler-rt will follow.
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llvm-svn: 162268
2012-08-21 08:24:25 +00:00
bf479714f9
[asan] insert crash basic blocks inline as opposed to inserting them at the end of the function. This doesn't seem to fix or break anything, but is considered to be more friendly to downstream passes (test change)
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llvm-svn: 161871
2012-08-14 14:05:50 +00:00
f02c6069ac
[asan] make sure that the crash callbacks do not get merged (Chandler's idea: insert an empty InlineAsm). Change the order in which the new BBs are inserted: the slow path BB is insert between old BBs, the crash BB is inserted at the end. Don't create an empty BB (introduced by recent commits). Update the test. The experimental code that does manual crash callback merge will most likely be deleted later.
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llvm-svn: 160544
2012-07-20 09:54:50 +00:00
874dae6119
[asan] refactor instrumentation to allow merging the crash callbacks (not fully implemented yet, no functionality change except the BB order)
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llvm-svn: 160284
2012-07-16 16:15:40 +00:00
8b540ab337
Revert r160254 temporarily.
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It turns out that ASan relied on the at-the-end block insertion order to
(purely by happenstance) disable some LLVM optimizations, which in turn
start firing when the ordering is made more "normal". These
optimizations in turn merge many of the instrumentation reporting calls
which breaks the return address based error reporting in ASan.
We're looking at several different options for fixing this.
llvm-svn: 160256
2012-07-16 10:01:02 +00:00
3dd6c81492
Teach AddressSanitizer to create basic blocks in a more natural order.
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This is particularly useful to the backend code generators which try to
process things in the incoming function order.
Also, cleanup some uses of IRBuilder to be a bit simpler and more clear.
llvm-svn: 160254
2012-07-16 08:58:53 +00:00
663943e23e
Add a basic test for AddressSanitizer. This is just a bare-bones
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functionality test.
In general, unless the functionality is substantially separated, we
should lump more basic testing into this file. The test running
infrastructure likes having a few test files with more comprehensive
testing within them.
llvm-svn: 160253
2012-07-16 08:56:46 +00:00
9024160439
[asan] instrument cmpxchg and atomicrmw
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llvm-svn: 157683
2012-05-30 09:04:06 +00:00
afbb65dee7
[asan] move x86-specific test to a separate X86 directory with a custom lit.local.cfg file
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llvm-svn: 152567
2012-03-12 18:49:11 +00:00
924f9a671d
Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed.
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Patch reviewed by Daniel Dunbar. It will be followed by additional cleanup patches.
llvm-svn: 150664
2012-02-16 06:28:33 +00:00
dc84eae1e0
[asan] fix asan-vs-gvn.ll test (it did not actually check much before this change)
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llvm-svn: 150441
2012-02-14 00:02:35 +00:00
154a54d972
[asan] unpoison the stack before every noreturn call. Fixes asan issue 37. llvm part
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llvm-svn: 150102
2012-02-08 21:36:17 +00:00
9e0d377400
The patch resolves the conflict between AddressSanitizer and load widening (GVN).
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The problem initially reported by Mozilla folks (http://code.google.com/p/address-sanitizer/issues/detail?id=20 ),
but it also prevents us from enabling LLVM bootstrap with AddressSanitizer.
llvm-svn: 149925
2012-02-06 22:48:56 +00:00
c11d1dd133
[asan] enable asan only for the functions that have Attribute::AddressSafety
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llvm-svn: 148846
2012-01-24 19:34:43 +00:00
842ae27ae3
[asan] one more test for asan instrumentation: (*a)++ should be instrumented only once.
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llvm-svn: 147509
2012-01-04 01:02:14 +00:00
561dade58d
[asan] add a test for instrumenting globals
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llvm-svn: 146718
2011-12-16 01:28:19 +00:00
8b5c7a56a3
[asan] do not instrument threadlocal globals, this is buggy
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llvm-svn: 145092
2011-11-23 02:10:54 +00:00
1cdc6e9567
[asan] workaround for reg alloc bug 11395: don't instrument functions with large chunks of inline assembler
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llvm-svn: 144962
2011-11-18 01:41:06 +00:00
65e2211b95
fall back to explicit list of allowed linkages when instrumenting globals in asan; add a test check that asan does not touch linkonce_odr
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llvm-svn: 144933
2011-11-17 23:14:59 +00:00
6e6b03ec46
AddressSanitizer, first commit (compiler module only)
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llvm-svn: 144758
2011-11-16 01:35:23 +00:00
Kostya Serebryany