6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-22 07:24:47 +00:00
Code Issues Projects Releases Wiki Activity

Final fix for PR 23499 and IR test case.

Browse Source 
This fixes a bit I forgot in r238335. In addition to the data record and
the counter, we can also move the name of the counter to the comdat for
the associated function.

I'm also adding an IR test case to check that these three elements are
placed in the proper comdat.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238351 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Diego Novillo
2015-05-27 19:34:01 +00:00
parent 3c41ae83f2
commit b72f3e0d32
2 changed files with 26 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
lib/Transforms/Instrumentation/InstrProfiling.cpp
View File

@@ -196,14 +196,17 @@ InstrProfiling::getOrCreateRegionCounters(InstrProfIncrementInst *Inc) {
if (It != RegionCounters.end())
return It->second;
// Move the name variable to the right section.
// Move the name variable to the right section. Make sure it is placed in the
// same comdat as its associated function. Otherwise, we may get multiple
// counters for the same function in certain cases.
Function *Fn = Inc->getParent()->getParent();
Name->setSection(getNameSection());
Name->setAlignment(1);
Name->setComdat(Fn->getComdat());
uint64_t NumCounters = Inc->getNumCounters()->getZExtValue();
LLVMContext &Ctx = M->getContext();
ArrayType *CounterTy = ArrayType::get(Type::getInt64Ty(Ctx), NumCounters);
Function *Fn = Inc->getParent()->getParent();
// Create the counters variable.
auto *Counters = new GlobalVariable(*M, CounterTy, false, Name->getLinkage(),
@@ -212,9 +215,6 @@ InstrProfiling::getOrCreateRegionCounters(InstrProfIncrementInst *Inc) {
Counters->setVisibility(Name->getVisibility());
Counters->setSection(getCountersSection());
Counters->setAlignment(8);
// Place the counters in the same comdat section as its parent function.
// Otherwise, we may get multiple counters for the same function in certain
// cases.
Counters->setComdat(Fn->getComdat());
RegionCounters[Inc->getName()] = Counters;