6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-10-25 10:27:04 +00:00
Code Issues Projects Releases Wiki Activity

[sanitizer] add nosanitize metadata to more coverage instrumentation instructions

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231333 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kostya Serebryany
2015-03-05 01:20:05 +00:00
parent 4197c13062
commit c2f4077b88
2 changed files with 20 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
lib/Transforms/Instrumentation/SanitizerCoverage.cpp
View File

@@ -109,6 +109,7 @@ class SanitizerCoverageModule : public ModulePass {
ArrayRef<Instruction *> IndirCalls);
bool InjectCoverage(Function &F, ArrayRef<BasicBlock *> AllBlocks,
ArrayRef<Instruction *> IndirCalls);
void SetNoSanitizeMetada(Instruction *I);
void InjectCoverageAtBlock(Function &F, BasicBlock &BB, bool UseCalls);
Function *SanCovFunction;
Function *SanCovWithCheckFunction;
@@ -306,6 +307,12 @@ void SanitizerCoverageModule::InjectCoverageForIndirectCalls(
}
}
void SanitizerCoverageModule::SetNoSanitizeMetada(Instruction *I) {
I->setMetadata(
I->getParent()->getParent()->getParent()->getMDKindID("nosanitize"),
MDNode::get(*C, None));
}
void SanitizerCoverageModule::InjectCoverageAtBlock(Function &F, BasicBlock &BB,
bool UseCalls) {
BasicBlock::iterator IP = BB.getFirstInsertionPt(), BE = BB.end();
@@ -335,8 +342,7 @@ void SanitizerCoverageModule::InjectCoverageAtBlock(Function &F, BasicBlock &BB,
LoadInst *Load = IRB.CreateLoad(GuardP);
Load->setAtomic(Monotonic);
Load->setAlignment(4);
Load->setMetadata(F.getParent()->getMDKindID("nosanitize"),
MDNode::get(*C, None));
SetNoSanitizeMetada(Load);
Value *Cmp = IRB.CreateICmpSGE(Constant::getNullValue(Load->getType()), Load);
Instruction *Ins = SplitBlockAndInsertIfThen(
Cmp, IP, false, MDBuilder(*C).createBranchWeights(1, 100000));
@@ -353,9 +359,11 @@ void SanitizerCoverageModule::InjectCoverageAtBlock(Function &F, BasicBlock &BB,
IRB.CreatePointerCast(EightBitCounterArray, IntptrTy),
ConstantInt::get(IntptrTy, SanCovFunction->getNumUses() - 1));
P = IRB.CreateIntToPtr(P, IRB.getInt8PtrTy());
Value *LI = IRB.CreateLoad(P);
LoadInst *LI = IRB.CreateLoad(P);
Value *Inc = IRB.CreateAdd(LI, ConstantInt::get(IRB.getInt8Ty(), 1));
IRB.CreateStore(Inc, P);
StoreInst *SI = IRB.CreateStore(Inc, P);
SetNoSanitizeMetada(LI);
SetNoSanitizeMetada(SI);
}
if (ClExperimentalTracing) {