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[sanitizer-coverage] remove some more stale code

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llvm-svn: 300778
This commit is contained in:
Kostya Serebryany 2017-04-19 22:42:11 +00:00
parent 7c9b086ef5
commit c5d3d49034
2 changed files with 5 additions and 33 deletions
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26
llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
View File

@ -59,7 +59,6 @@ using namespace llvm;
static const char *const SanCovModuleInitName = "__sanitizer_cov_module_init";
static const char *const SanCovName = "__sanitizer_cov";
static const char *const SanCovWithCheckName = "__sanitizer_cov_with_check";
static const char *const SanCovIndirCallName = "__sanitizer_cov_indir_call16";
static const char *const SanCovTracePCIndirName =
"__sanitizer_cov_trace_pc_indir";
static const char *const SanCovTracePCName = "__sanitizer_cov_trace_pc";
@ -82,8 +81,7 @@ static const char *const SanCovTracePCGuardInitName =
static cl::opt<int> ClCoverageLevel(
"sanitizer-coverage-level",
cl::desc("Sanitizer Coverage. 0: none, 1: entry block, 2: all blocks, "
"3: all blocks and critical edges, "
"4: above plus indirect calls"),
"3: all blocks and critical edges"),
cl::Hidden, cl::init(0));
static cl::opt<unsigned> ClCoverageBlockThreshold(
@ -197,7 +195,7 @@ private:
StringRef getSanCovTracePCGuardSectionEnd() const;
Function *SanCovFunction;
Function *SanCovWithCheckFunction;
Function *SanCovIndirCallFunction, *SanCovTracePCIndir;
Function *SanCovTracePCIndir;
Function *SanCovTracePC, *SanCovTracePCGuard;
Function *SanCovTraceCmpFunction[4];
Function *SanCovTraceDivFunction[2];
@ -243,9 +241,6 @@ bool SanitizerCoverageModule::runOnModule(Module &M) {
M.getOrInsertFunction(SanCovWithCheckName, VoidTy, Int32PtrTy));
SanCovTracePCIndir = checkSanitizerInterfaceFunction(
M.getOrInsertFunction(SanCovTracePCIndirName, VoidTy, IntptrTy));
SanCovIndirCallFunction =
checkSanitizerInterfaceFunction(M.getOrInsertFunction(
SanCovIndirCallName, VoidTy, IntptrTy, IntptrTy));
SanCovTraceCmpFunction[0] =
checkSanitizerInterfaceFunction(M.getOrInsertFunction(
SanCovTraceCmp1, VoidTy, IRB.getInt8Ty(), IRB.getInt8Ty()));
@ -516,26 +511,15 @@ void SanitizerCoverageModule::InjectCoverageForIndirectCalls(
Function &F, ArrayRef<Instruction *> IndirCalls) {
if (IndirCalls.empty())
return;
const int CacheSize = 16;
const int CacheAlignment = 64; // Align for better performance.
Type *Ty = ArrayType::get(IntptrTy, CacheSize);
if (!Options.TracePC && !Options.TracePCGuard)
return;
for (auto I : IndirCalls) {
IRBuilder<> IRB(I);
CallSite CS(I);
Value *Callee = CS.getCalledValue();
if (isa<InlineAsm>(Callee))
continue;
GlobalVariable *CalleeCache = new GlobalVariable(
*F.getParent(), Ty, false, GlobalValue::PrivateLinkage,
Constant::getNullValue(Ty), "__sancov_gen_callee_cache");
CalleeCache->setAlignment(CacheAlignment);
if (Options.TracePC || Options.TracePCGuard)
IRB.CreateCall(SanCovTracePCIndir,
IRB.CreatePointerCast(Callee, IntptrTy));
else
IRB.CreateCall(SanCovIndirCallFunction,
{IRB.CreatePointerCast(Callee, IntptrTy),
IRB.CreatePointerCast(CalleeCache, IntptrTy)});
IRB.CreateCall(SanCovTracePCIndir, IRB.CreatePointerCast(Callee, IntptrTy));
}
}

12
llvm/test/Instrumentation/SanitizerCoverage/coverage.ll
View File

@ -5,7 +5,6 @@
; RUN: opt < %s -sancov -sanitizer-coverage-level=2 -sanitizer-coverage-block-threshold=0 -S | FileCheck %s --check-prefix=CHECK_WITH_CHECK
; RUN: opt < %s -sancov -sanitizer-coverage-level=2 -sanitizer-coverage-block-threshold=1 -S | FileCheck %s --check-prefix=CHECK_WITH_CHECK
; RUN: opt < %s -sancov -sanitizer-coverage-level=3 -sanitizer-coverage-block-threshold=10 -S | FileCheck %s --check-prefix=CHECK3
; RUN: opt < %s -sancov -sanitizer-coverage-level=4 -S | FileCheck %s --check-prefix=CHECK4
; RUN: opt < %s -sancov -sanitizer-coverage-level=4 -sanitizer-coverage-trace-pc -S | FileCheck %s --check-prefix=CHECK_TRACE_PC
; RUN: opt < %s -sancov -sanitizer-coverage-level=2 -sanitizer-coverage-block-threshold=10 \
@ -93,13 +92,6 @@ entry:
ret void
}
; We expect to see two calls to __sanitizer_cov_indir_call16
; with different values of second argument.
; CHECK4-LABEL: define void @CallViaVptr
; CHECK4: call void @__sanitizer_cov_indir_call16({{.*}},[[CACHE:.*]])
; CHECK4-NOT: call void @__sanitizer_cov_indir_call16({{.*}},[[CACHE]])
; CHECK4: ret void
; CHECK_TRACE_PC-LABEL: define void @foo
; CHECK_TRACE_PC: call void @__sanitizer_cov_trace_pc
; CHECK_TRACE_PC: call void asm sideeffect "", ""()
@ -115,10 +107,6 @@ entry:
unreachable
}
; CHECK4-LABEL: define void @call_unreachable
; CHECK4-NOT: __sanitizer_cov
; CHECK4: unreachable
; CHECKPRUNE-LABEL: define void @foo
; CHECKPRUNE: call void @__sanitizer_cov
; CHECKPRUNE: call void @__sanitizer_cov