6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-13 04:38:24 +00:00
Code Issues Projects Releases Wiki Activity

Speedup bitcode writer. Do not walk all values for all functions to emit function local metadata. In one testcase, probably worst case scenario, the 70x speed up is seen.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105360 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2010-06-02 23:05:04 +00:00
parent 05c68374c1
commit 6209869f83
3 changed files with 16 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
lib/Bitcode/Writer/ValueEnumerator.cpp
View File

@ -257,6 +257,8 @@ void ValueEnumerator::EnumerateMetadata(const Value *MD) {
else
EnumerateType(Type::getVoidTy(MD->getContext()));
}
if (N->isFunctionLocal() && N->getFunction())
FunctionLocalMDs.push_back(N);
return;
}
@ -414,7 +416,8 @@ void ValueEnumerator::incorporateFunction(const Function &F) {
FirstInstID = Values.size();
SmallVector<MDNode *, 8> FunctionLocalMDs;
FunctionLocalMDs.clear();
SmallVector<MDNode *, 8> FnLocalMDVector;
// Add all of the instructions.
for (Function::const_iterator BB = F.begin(), E = F.end(); BB != E; ++BB) {
for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I!=E; ++I) {
@ -423,7 +426,7 @@ void ValueEnumerator::incorporateFunction(const Function &F) {
if (MDNode *MD = dyn_cast<MDNode>(*OI))
if (MD->isFunctionLocal() && MD->getFunction())
// Enumerate metadata after the instructions they might refer to.
FunctionLocalMDs.push_back(MD);
FnLocalMDVector.push_back(MD);
}
if (!I->getType()->isVoidTy())
EnumerateValue(I);
@ -431,8 +434,8 @@ void ValueEnumerator::incorporateFunction(const Function &F) {
}
// Add all of the function-local metadata.
for (unsigned i = 0, e = FunctionLocalMDs.size(); i != e; ++i)
EnumerateOperandType(FunctionLocalMDs[i]);
for (unsigned i = 0, e = FnLocalMDVector.size(); i != e; ++i)
EnumerateOperandType(FnLocalMDVector[i]);
}
void ValueEnumerator::purgeFunction() {