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AssumptionTracker: Don't create temporary CallbackVHs.

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Those are expensive to create in cold cache scenarios. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219575 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2014-10-11 19:13:01 +00:00
parent b1bba1a339
commit 8daea6b323
2 changed files with 6 additions and 4 deletions
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2
include/llvm/Analysis/AssumptionTracker.h
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@ -99,7 +99,7 @@ public:
typedef iterator_range<assumption_iterator> assumption_range;
inline assumption_range assumptions(Function *F) {
FunctionCallsMap::iterator I = CachedAssumeCalls.find(F);
FunctionCallsMap::iterator I = CachedAssumeCalls.find_as(F);
if (I == CachedAssumeCalls.end()) {
I = scanFunction(F);
}

8
lib/Analysis/AssumptionTracker.cpp
View File

@ -29,12 +29,14 @@ void AssumptionTracker::FunctionCallbackVH::deleted() {
}
void AssumptionTracker::forgetCachedAssumptions(Function *F) {
CachedAssumeCalls.erase(F);
auto I = CachedAssumeCalls.find_as(F);
if (I != CachedAssumeCalls.end())
CachedAssumeCalls.erase(I);
}
void AssumptionTracker::CallCallbackVH::deleted() {
assert(F && "delete callback called on dummy handle");
FunctionCallsMap::iterator I = AT->CachedAssumeCalls.find(F);
FunctionCallsMap::iterator I = AT->CachedAssumeCalls.find_as(F);
assert(I != AT->CachedAssumeCalls.end() &&
"Function cleared from the map without removing the values?");
@ -88,7 +90,7 @@ void AssumptionTracker::registerAssumption(CallInst *CI) {
Function *F = CI->getParent()->getParent();
assert(F && "Cannot register @llvm.assume call not in a function");
FunctionCallsMap::iterator I = CachedAssumeCalls.find(F);
FunctionCallsMap::iterator I = CachedAssumeCalls.find_as(F);
if (I == CachedAssumeCalls.end()) {
// If this function has not already been scanned, then don't do anything
// here. This intrinsic will be found, if it still exists, if the list of