6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-23 14:25:07 +00:00
Code Issues Projects Releases Wiki Activity

[asan] one more workaround for PR17409: don't do BB-level coverage instrumentation if there are more than N (=1500) basic blocks. This makes ASanCoverage work on libjpeg_turbo/jchuff.c used by Chrome, which has 1824 BBs

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206564 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kostya Serebryany
2014-04-18 08:02:42 +00:00
parent a1da819896
commit 40a9c0f58b
2 changed files with 8 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
lib/Transforms/Instrumentation/AddressSanitizer.cpp
View File

@@ -135,6 +135,10 @@ static cl::opt<bool> ClGlobals("asan-globals",
static cl::opt<int> ClCoverage("asan-coverage",
cl::desc("ASan coverage. 0: none, 1: entry block, 2: all blocks"),
cl::Hidden, cl::init(false));
static cl::opt<int> ClCoverageBlockThreshold("asan-coverage-block-threshold",
cl::desc("Add coverage instrumentation only to the entry block if there "
"are more than this number of blocks."),
cl::Hidden, cl::init(1500));
static cl::opt<bool> ClInitializers("asan-initialization-order",
cl::desc("Handle C++ initializer order"), cl::Hidden, cl::init(false));
static cl::opt<bool> ClMemIntrin("asan-memintrin",
@@ -1263,7 +1267,8 @@ bool AddressSanitizer::InjectCoverage(Function &F,
const ArrayRef<BasicBlock *> AllBlocks) {
if (!ClCoverage) return false;
if (ClCoverage == 1) {
if (ClCoverage == 1 ||
(unsigned)ClCoverageBlockThreshold < AllBlocks.size()) {
InjectCoverageAtBlock(F, F.getEntryBlock());
} else {
for (size_t i = 0, n = AllBlocks.size(); i < n; i++)