[asan] asan_allocator2: store the user requested size in just 32 bits (larger sizes use metadata). This allows to put one more 32-bit field into the chunk header

llvm-svn: 171089

[asan] add a test for right OOB with special large sizes. Fix this test in asan_allocator2. More test tweaking for allocator2

llvm-svn: 171058

[asan] asan_allocator2 fix two asserts that happen on full chrome: a) memalign called with 0 size and large alignment and b) malloc called after TSD has been destructed

llvm-svn: 170900

llvm-svn: 170888

[asan] add a flag alloc_dealloc_mismatch (off by default for now) which finds malloc/delete, new/free, new/delete[], etc mismatches

llvm-svn: 170869

llvm-svn: 170697

[asan] add a flag poison_heap to allow better allocator benchmarking, implemenet malloc_stats() on Linux

llvm-svn: 170685

llvm-svn: 170680

llvm-svn: 170548

[asan] asan_allocator2: improve FindHeapChunkByAddress to find memory chunks to the left of a given address. Almost all tests pass with the new allocator now, only 6 are left to fix.

llvm-svn: 170511

llvm-svn: 170339

llvm-svn: 170329

llvm-svn: 170315

llvm-svn: 170310

llvm-svn: 170193

llvm-svn: 170190

llvm-svn: 169985

llvm-svn: 169864

llvm-svn: 169836

[asan] introduce asan_allocator2.cc, which will have the replacement for asan allocator (now, just a bit of boilerplate)

llvm-svn: 169733