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Comment and minor code cleanup for GCStrategy (NFC)

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Updating comments to reflect the current state of the world after my recent changes to ownership structure and generally better describe what a GCStrategy is and how it works.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224086 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Philip Reames
2014-12-12 00:49:03 +00:00
parent 6e6318f148
commit b7dfa31ac8
2 changed files with 83 additions and 58 deletions
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13
lib/CodeGen/GCStrategy.cpp
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@@ -102,19 +102,6 @@ GCStrategy::GCStrategy() :
UsesMetadata(false)
{}
bool GCStrategy::initializeCustomLowering(Module &M) { return false; }
bool GCStrategy::performCustomLowering(Function &F) {
dbgs() << "gc " << getName() << " must override performCustomLowering.\n";
llvm_unreachable("must override performCustomLowering");
}
bool GCStrategy::findCustomSafePoints(GCFunctionInfo& FI, MachineFunction &F) {
dbgs() << "gc " << getName() << " must override findCustomSafePoints.\n";
llvm_unreachable(nullptr);
}
// -----------------------------------------------------------------------------
INITIALIZE_PASS_BEGIN(LowerIntrinsics, "gc-lowering", "GC Lowering",