llvm-svn: 204124

llvm-svn: 204119

llvm-svn: 204115

Reapply r204079 and r204083, this time with stubs for fputc in
compiler-rt.

llvm-svn: 204091

Buildbots are having trouble finding fputc(), and I can't figure out
why.  Reverting to investigate.

llvm-svn: 204088

llvm-svn: 204084

<rdar://problem/15943240>

llvm-svn: 204083

In instrumentation-based profiling, we need a set of data structures to
represent the counters.  Previously, these were built up during static
initialization.  Now, they're shoved into a specially-named section so
that they show up as an array.

As a consequence of the reorganizing symbols, instrumentation data
structures for linkonce functions are now correctly coalesced.

This is the first step in a larger project to minimize runtime overhead
and dependencies in instrumentation-based profilng.  The larger picture
includes removing all initialization overhead and making the dependency
on libc optional.

<rdar://problem/15943240>

llvm-svn: 204079

llvm-svn: 204044

[sanitizer] reverse the order of the stack traces printed for every pair of locks in the deadlock report (first print the 'from' node, then print the 'to' node of the deadlock graph)

llvm-svn: 204043

[sanitizer] make the deadlock detector print 2*N stack traces on lock-order-inversion with N locks (i.e. print stack traces for both lock acquisitions in every edge in the graph). More improvements to follow

llvm-svn: 204042

[sanitizer] allow to store the lock context (stack trace id) with all currently held locks in a thread. This will allow the deadlock detector to provide better warnings (more changes to go)

llvm-svn: 204039

llvm-svn: 204037

llvm-svn: 204036

llvm-svn: 204035

llvm-svn: 204034

Make behavior introduced in r202820 conditional (under legacy_pthread_cond flag).
The new issue that we've hit with the satellite pthread_cond_t struct is
that pthread_condattr_getpshared does not work (satellite data is not shared between processes).
The idea is that most processes do not use pthread 2.2.5.
The rare ones that use (2.2.5 is dated by 2002) must specify legacy_pthread_cond=1
on their own risk.

llvm-svn: 204032

llvm-svn: 204029

by ignoring globals from __TEXT,__cstring,cstring_literals during instrumenation.
Add a regression test.

llvm-svn: 203916

llvm-svn: 203913

llvm-svn: 203911

llvm-svn: 203910

llvm-svn: 203904

[sanitizer] in bitset-based deadlock detector collect edge's stack trace when an edge is added to the graph (in following CLs these stack traces will be added to the report)

llvm-svn: 203902

llvm-svn: 203798

[sanitizer] in bitvector-based deadlock detector split onLock into onLockBefore and onLockAfter hooks

llvm-svn: 203796

llvm-svn: 203795

llvm-svn: 203793

llvm-svn: 203789

llvm-svn: 203786

http://llvm.org/bugs/show_bug.cgi?id=19113 is fixed, so enable the better CHECK

llvm-svn: 203784

llvm-svn: 203782

llvm-svn: 203779

llvm-svn: 203778

llvm-svn: 203776

llvm-svn: 203773

llvm-svn: 203743

This will break without the corresponding change in clang, which I've
reverted until I figure out how to get it to link properly.

This reverts commit r203710.

llvm-svn: 203713

llvm-svn: 203710

The MIPS version was reviewed by myself. The ARM version was reviewed by JF
Bastien.

Patch by Narayan Kamath <narayan@google.com>.

llvm-svn: 203674