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
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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
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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
Alexey Samsonov
1afbb51796
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169984 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-12 14:31:53 +00:00
Alexey Samsonov
f985f44b13
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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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169200 91177308-0d34-0410-b5e6-96231b3b80d8
2012-12-04 01:34:23 +00:00
Kostya Serebryany
5085eb80ab
[asan] when checking the noreturn attribute on the call, also check it on the callee
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168861 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29 08:57:20 +00:00
Kostya Serebryany
1416edc30a
[asan] Split AddressSanitizer into two passes (FunctionPass, ModulePass), LLVM part. This requires a clang part which will follow.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168781 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-28 10:31:36 +00:00
Kostya Serebryany
407790604b
[asan] don't instrument linker-initialized globals even with external linkage in -asan-initialization-order mode
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168367 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-20 13:11:32 +00:00
Kostya Serebryany
ca23d43084
[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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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168366 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-20 13:00:01 +00:00
Kostya Serebryany
a5f54f1443
[asan] don't instrument globals that we've created ourselves (reduces the binary size a bit)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167230 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-01 13:42:40 +00:00
Kostya Serebryany
bd0052a0f2
[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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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166267 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 06:20:53 +00:00
Kostya Serebryany
2611eeda98
[asan] fix a test
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165938 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-15 14:30:30 +00:00
Sylvestre Ledru
94c22716d6
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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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164768 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-27 10:14:43 +00:00
Sylvestre Ledru
7e2c793a2b
Fix a typo 'iff' => 'if'
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164767 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-27 09:59:43 +00:00
Kostya Serebryany
9b9f87a87a
[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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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162268 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-21 08:24:25 +00:00
Kostya Serebryany
e60da02281
[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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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161871 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-14 14:05:50 +00:00
Kostya Serebryany
f7b08226eb
[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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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160544 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-20 09:54:50 +00:00
Kostya Serebryany
c0ed3e548c
[asan] refactor instrumentation to allow merging the crash callbacks (not fully implemented yet, no functionality change except the BB order)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160284 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-16 16:15:40 +00:00
Chandler Carruth
349f14c72c
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160256 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-16 10:01:02 +00:00
Chandler Carruth
c3c8db9d25
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160254 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-16 08:58:53 +00:00
Chandler Carruth
2f58533d1e
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160253 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-16 08:56:46 +00:00
Kostya Serebryany
e6cf2e0bd0
[asan] instrument cmpxchg and atomicrmw
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157683 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-30 09:04:06 +00:00
Kostya Serebryany
1778513fa5
[asan] move x86-specific test to a separate X86 directory with a custom lit.local.cfg file
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152567 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-12 18:49:11 +00:00
Eli Bendersky
0f0c411079
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150664 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-16 06:28:33 +00:00
Kostya Serebryany
747c02c768
[asan] fix asan-vs-gvn.ll test (it did not actually check much before this change)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150441 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-14 00:02:35 +00:00
Kostya Serebryany
95e3cf44a9
[asan] unpoison the stack before every noreturn call. Fixes asan issue 37. llvm part
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150102 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-08 21:36:17 +00:00
Kostya Serebryany
0ca032b03d
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149925 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-06 22:48:56 +00:00
Kostya Serebryany
0307b9a885
[asan] enable asan only for the functions that have Attribute::AddressSafety
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148846 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-24 19:34:43 +00:00
Kostya Serebryany
091523c648
[asan] one more test for asan instrumentation: (*a)++ should be instrumented only once.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147509 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-04 01:02:14 +00:00
Kostya Serebryany
478a4d997a
[asan] add a test for instrumenting globals
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146718 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-16 01:28:19 +00:00
Kostya Serebryany
d2703dec27
[asan] do not instrument threadlocal globals, this is buggy
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145092 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-23 02:10:54 +00:00
Kostya Serebryany
5a3a9c9371
[asan] workaround for reg alloc bug 11395: don't instrument functions with large chunks of inline assembler
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144962 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-18 01:41:06 +00:00
Kostya Serebryany
7cf2a04361
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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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144933 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-17 23:14:59 +00:00
Kostya Serebryany
800e03f598
AddressSanitizer, first commit (compiler module only)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144758 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-16 01:35:23 +00:00