3d4bba302d
See RFC for background: http://lists.llvm.org/pipermail/llvm-dev/2020-June/142744.html Follow on companion to the clang/llvm instrumentation support in D85948 and committed earlier. This patch adds the compiler-rt runtime support for the memory profiling. Note that much of this support was cloned from asan (and then greatly simplified and renamed). For example the interactions with the sanitizer_common allocators, error handling, interception, etc. The bulk of the memory profiling specific code can be found in the MemInfoBlock, MemInfoBlockCache, and related classes defined and used in memprof_allocator.cpp. For now, the memory profile is dumped to text (stderr by default, but honors the sanitizer_common log_path flag). It is dumped in either a default verbose format, or an optional terse format. This patch also adds a set of tests for the core functionality. Differential Revision: https://reviews.llvm.org/D87120
11 lines
322 B
C++
11 lines
322 B
C++
// Check mem_info_cache_entries option.
|
|
|
|
// RUN: %clangxx_memprof -O0 %s -o %t && %env_memprof_opts=mem_info_cache_entries=15:print_mem_info_cache_miss_rate=1:print_mem_info_cache_miss_rate_details=1 %run %t 2>&1 | FileCheck %s
|
|
|
|
// CHECK: Set 14 miss rate: 0 / {{.*}} = 0.00%
|
|
// CHECK-NOT: Set
|
|
|
|
int main() {
|
|
return 0;
|
|
}
|