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Kostya Kortchinsky 161cca266a [scudo][standalone] Android related improvements 
Summary:
This changes a few things to improve memory footprint and performances
on Android, and fixes a test compilation error:
- add `stdlib.h` to `wrappers_c_test.cc` to address
  https://bugs.llvm.org/show_bug.cgi?id=42810
- change Android size class maps, based on benchmarks, to improve
  performances and lower the Svelte memory footprint. Also change the
  32-bit region size for said configuration
- change the `reallocate` logic to reallocate in place for sizes larger
  than the original chunk size, when they still fit in the same block.
  This addresses patterns from `memory_replay` dumps like the following:
```
202: realloc 0xb48fd000 0xb4930650 12352
202: realloc 0xb48fd000 0xb48fd000 12420
202: realloc 0xb48fd000 0xb48fd000 12492
202: realloc 0xb48fd000 0xb48fd000 12564
202: realloc 0xb48fd000 0xb48fd000 12636
202: realloc 0xb48fd000 0xb48fd000 12708
202: realloc 0xb48fd000 0xb48fd000 12780
202: realloc 0xb48fd000 0xb48fd000 12852
202: realloc 0xb48fd000 0xb48fd000 12924
202: realloc 0xb48fd000 0xb48fd000 12996
202: realloc 0xb48fd000 0xb48fd000 13068
202: realloc 0xb48fd000 0xb48fd000 13140
202: realloc 0xb48fd000 0xb48fd000 13212
202: realloc 0xb48fd000 0xb48fd000 13284
202: realloc 0xb48fd000 0xb48fd000 13356
202: realloc 0xb48fd000 0xb48fd000 13428
202: realloc 0xb48fd000 0xb48fd000 13500
202: realloc 0xb48fd000 0xb48fd000 13572
202: realloc 0xb48fd000 0xb48fd000 13644
202: realloc 0xb48fd000 0xb48fd000 13716
202: realloc 0xb48fd000 0xb48fd000 13788
...
```
  In this situation we were deallocating the old chunk, and
  allocating a new one for every single one of those, but now we can
  keep the same chunk (we just updated the header), which saves some
  heap operations.

Reviewers: hctim, morehouse, vitalybuka, eugenis, cferris, rengolin

Reviewed By: morehouse

Subscribers: srhines, delcypher, #sanitizers, llvm-commits

Tags: #llvm, #sanitizers

Differential Revision: https://reviews.llvm.org/D67293

llvm-svn: 371628
 		2019-09-11 14:48:41 +00:00
..
BlocksRuntime [compiler-rt] Test commit: remove some trailing white spaces. 2017-08-25 19:36:30 +00:00
asan [asan_symbolize] Fix broken pipe handling for python 2.7 2019-08-27 07:27:41 +00:00
builtins compiler-rt: use fp_t instead of long double, for consistency 2019-09-09 13:50:20 +00:00
cfi Improve error message when '=' is missing in {ASAN,...}_OPTIONS. 2019-06-15 01:37:14 +00:00
crt [compiler-rt][crt] Pass -fno-lto in check_cxx_section_exists 2019-08-20 07:41:14 +00:00
dfsan compiler-rt: Rename .cc file in test/dfsan to cpp 2019-08-05 13:19:28 +00:00
fuzzer [libFuzzer] Make -merge=1 to reuse coverage information from the control file. 2019-09-11 14:11:08 +00:00
gwp_asan Add GWP-ASan fuzz target to compiler-rt/tools. 2019-08-27 18:28:07 +00:00
hwasan hwasan: Align n_namesz and n_descsz to 4 when reading notes. 2019-08-23 23:33:26 +00:00
interception compiler-rt: Rename .cc file in lib/{interception/tests,safestack} to .cpp 2019-08-01 13:56:52 +00:00
lsan Revert r369472 and r369441 2019-08-21 05:06:21 +00:00
msan [Sanitizer] checks ASLR on FreeBSD 2019-08-22 21:36:35 +00:00
profile Revert "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM" 2019-09-11 09:16:17 +00:00
safestack compiler-rt: Rename .cc file in lib/{interception/tests,safestack} to .cpp 2019-08-01 13:56:52 +00:00
sanitizer_common Do not intercept malloc_usable_size on NetBSD 2019-09-08 15:00:13 +00:00
scudo [scudo][standalone] Android related improvements 2019-09-11 14:48:41 +00:00
stats compiler-rt: Rename .cc file in lib/{dfsan,stats,ubsan_minimal} to .cpp 2019-08-01 12:41:23 +00:00
tsan [TSan] Add interceptors for mach_vm_[de]allocate 2019-09-09 18:57:32 +00:00
ubsan [UBSan] Do not overwrite the default print_summary sanitizer option. 2019-09-09 19:30:48 +00:00
ubsan_minimal compiler-rt: Rename .cc file in lib/{dfsan,stats,ubsan_minimal} to .cpp 2019-08-01 12:41:23 +00:00
xray Re-land "[compiler-rt] Migrate llvm::make_unique to std::make_unique" 2019-08-15 14:57:44 +00:00
CMakeLists.txt Reland "[compiler-rt] Simple crtbegin.o and crtend.o implementation" 2019-04-30 18:13:22 +00:00