[tor-commits] [tor-browser-build/maint-10.0-android] Remove unused rust patch
sysrqb at torproject.org
sysrqb at torproject.org
Fri Jan 22 21:03:02 UTC 2021
commit 4f43baa175e1774bbdcb2b8353bd6b849d9a605d
Author: Georg Koppen <gk at torproject.org>
Date: Wed Dec 16 09:51:41 2020 +0000
Remove unused rust patch
---
projects/rust/43909_145.patch | 252 ------------------------------------------
1 file changed, 252 deletions(-)
diff --git a/projects/rust/43909_145.patch b/projects/rust/43909_145.patch
deleted file mode 100644
index 94e2ae2..0000000
--- a/projects/rust/43909_145.patch
+++ /dev/null
@@ -1,252 +0,0 @@
-From 74ca2aebcd26adc7e3259d0802c07cc61b77a40c Mon Sep 17 00:00:00 2001
-From: Nikita Popov <nikita.ppv at gmail.com>
-Date: Sat, 16 Nov 2019 16:22:18 +0100
-Subject: [PATCH] Restructure caching
-
-Variant on D70103. The caching is switched to always use a BB to
-cache entry map, which then contains per-value caches. A separate
-set contains value handles with a deletion callback. This allows us
-to properly invalidate overdefined values.
-
-A possible alternative would be to always cache by value first and
-have per-BB maps/sets in the each cache entry. In that case we could
-use a ValueMap and would avoid the separate value handle set. I went
-with the BB indexing at the top level to make it easier to integrate
-D69914, but possibly that's not the right choice.
-
-Differential Revision: https://reviews.llvm.org/D70376
-
-diff --git a/llvm/lib/Analysis/LazyValueInfo.cpp b/llvm/lib/Analysis/LazyValueInfo.cpp
-index 7ae7a1fd549..8c9e85e95b3 100644
---- a/llvm/lib/Analysis/LazyValueInfo.cpp
-+++ b/llvm/lib/Analysis/LazyValueInfo.cpp
-@@ -136,12 +136,9 @@ namespace {
- /// A callback value handle updates the cache when values are erased.
- class LazyValueInfoCache;
- struct LVIValueHandle final : public CallbackVH {
-- // Needs to access getValPtr(), which is protected.
-- friend struct DenseMapInfo<LVIValueHandle>;
--
- LazyValueInfoCache *Parent;
-
-- LVIValueHandle(Value *V, LazyValueInfoCache *P)
-+ LVIValueHandle(Value *V, LazyValueInfoCache *P = nullptr)
- : CallbackVH(V), Parent(P) { }
-
- void deleted() override;
-@@ -155,89 +152,63 @@ namespace {
- /// This is the cache kept by LazyValueInfo which
- /// maintains information about queries across the clients' queries.
- class LazyValueInfoCache {
-- /// This is all of the cached block information for exactly one Value*.
-- /// The entries are sorted by the BasicBlock* of the
-- /// entries, allowing us to do a lookup with a binary search.
-- /// Over-defined lattice values are recorded in OverDefinedCache to reduce
-- /// memory overhead.
-- struct ValueCacheEntryTy {
-- ValueCacheEntryTy(Value *V, LazyValueInfoCache *P) : Handle(V, P) {}
-- LVIValueHandle Handle;
-- SmallDenseMap<PoisoningVH<BasicBlock>, ValueLatticeElement, 4> BlockVals;
-+ /// This is all of the cached information for one basic block. It contains
-+ /// the per-value lattice elements, as well as a separate set for
-+ /// overdefined values to reduce memory usage.
-+ struct BlockCacheEntryTy {
-+ SmallDenseMap<AssertingVH<Value>, ValueLatticeElement, 4> LatticeElements;
-+ SmallDenseSet<AssertingVH<Value>, 4> OverDefined;
- };
-
-- /// This tracks, on a per-block basis, the set of values that are
-- /// over-defined at the end of that block.
-- typedef DenseMap<PoisoningVH<BasicBlock>, SmallPtrSet<Value *, 4>>
-- OverDefinedCacheTy;
-- /// Keep track of all blocks that we have ever seen, so we
-- /// don't spend time removing unused blocks from our caches.
-- DenseSet<PoisoningVH<BasicBlock> > SeenBlocks;
--
-- /// This is all of the cached information for all values,
-- /// mapped from Value* to key information.
-- DenseMap<Value *, std::unique_ptr<ValueCacheEntryTy>> ValueCache;
-- OverDefinedCacheTy OverDefinedCache;
--
-+ /// Cached information per basic block.
-+ DenseMap<PoisoningVH<BasicBlock>, BlockCacheEntryTy> BlockCache;
-+ /// Set of value handles used to erase values from the cache on deletion.
-+ DenseSet<LVIValueHandle, DenseMapInfo<Value *>> ValueHandles;
-
- public:
- void insertResult(Value *Val, BasicBlock *BB,
- const ValueLatticeElement &Result) {
-- SeenBlocks.insert(BB);
--
-+ auto &CacheEntry = BlockCache.try_emplace(BB).first->second;
- // Insert over-defined values into their own cache to reduce memory
- // overhead.
- if (Result.isOverdefined())
-- OverDefinedCache[BB].insert(Val);
-- else {
-- auto It = ValueCache.find_as(Val);
-- if (It == ValueCache.end()) {
-- ValueCache[Val] = std::make_unique<ValueCacheEntryTy>(Val, this);
-- It = ValueCache.find_as(Val);
-- assert(It != ValueCache.end() && "Val was just added to the map!");
-- }
-- It->second->BlockVals[BB] = Result;
-- }
-- }
--
-- bool isOverdefined(Value *V, BasicBlock *BB) const {
-- auto ODI = OverDefinedCache.find(BB);
--
-- if (ODI == OverDefinedCache.end())
-- return false;
-+ CacheEntry.OverDefined.insert(Val);
-+ else
-+ CacheEntry.LatticeElements.insert({ Val, Result });
-
-- return ODI->second.count(V);
-+ auto HandleIt = ValueHandles.find_as(Val);
-+ if (HandleIt == ValueHandles.end())
-+ ValueHandles.insert({ Val, this });
- }
-
- bool hasCachedValueInfo(Value *V, BasicBlock *BB) const {
-- if (isOverdefined(V, BB))
-- return true;
--
-- auto I = ValueCache.find_as(V);
-- if (I == ValueCache.end())
-+ auto It = BlockCache.find(BB);
-+ if (It == BlockCache.end())
- return false;
-
-- return I->second->BlockVals.count(BB);
-+ return It->second.OverDefined.count(V) ||
-+ It->second.LatticeElements.count(V);
- }
-
- ValueLatticeElement getCachedValueInfo(Value *V, BasicBlock *BB) const {
-- if (isOverdefined(V, BB))
-+ auto It = BlockCache.find(BB);
-+ if (It == BlockCache.end())
-+ return ValueLatticeElement();
-+
-+ if (It->second.OverDefined.count(V))
- return ValueLatticeElement::getOverdefined();
-
-- auto I = ValueCache.find_as(V);
-- if (I == ValueCache.end())
-- return ValueLatticeElement();
-- auto BBI = I->second->BlockVals.find(BB);
-- if (BBI == I->second->BlockVals.end())
-+ auto LatticeIt = It->second.LatticeElements.find(V);
-+ if (LatticeIt == It->second.LatticeElements.end())
- return ValueLatticeElement();
-- return BBI->second;
-+
-+ return LatticeIt->second;
- }
-
- /// clear - Empty the cache.
- void clear() {
-- SeenBlocks.clear();
-- ValueCache.clear();
-- OverDefinedCache.clear();
-+ BlockCache.clear();
-+ ValueHandles.clear();
- }
-
- /// Inform the cache that a given value has been deleted.
-@@ -251,23 +222,18 @@ namespace {
- /// OldSucc might have (unless also overdefined in NewSucc). This just
- /// flushes elements from the cache and does not add any.
- void threadEdgeImpl(BasicBlock *OldSucc,BasicBlock *NewSucc);
--
-- friend struct LVIValueHandle;
- };
- }
-
- void LazyValueInfoCache::eraseValue(Value *V) {
-- for (auto I = OverDefinedCache.begin(), E = OverDefinedCache.end(); I != E;) {
-- // Copy and increment the iterator immediately so we can erase behind
-- // ourselves.
-- auto Iter = I++;
-- SmallPtrSetImpl<Value *> &ValueSet = Iter->second;
-- ValueSet.erase(V);
-- if (ValueSet.empty())
-- OverDefinedCache.erase(Iter);
-+ for (auto &Pair : BlockCache) {
-+ Pair.second.LatticeElements.erase(V);
-+ Pair.second.OverDefined.erase(V);
- }
-
-- ValueCache.erase(V);
-+ auto HandleIt = ValueHandles.find_as(V);
-+ if (HandleIt != ValueHandles.end())
-+ ValueHandles.erase(HandleIt);
- }
-
- void LVIValueHandle::deleted() {
-@@ -277,18 +243,7 @@ void LVIValueHandle::deleted() {
- }
-
- void LazyValueInfoCache::eraseBlock(BasicBlock *BB) {
-- // Shortcut if we have never seen this block.
-- DenseSet<PoisoningVH<BasicBlock> >::iterator I = SeenBlocks.find(BB);
-- if (I == SeenBlocks.end())
-- return;
-- SeenBlocks.erase(I);
--
-- auto ODI = OverDefinedCache.find(BB);
-- if (ODI != OverDefinedCache.end())
-- OverDefinedCache.erase(ODI);
--
-- for (auto &I : ValueCache)
-- I.second->BlockVals.erase(BB);
-+ BlockCache.erase(BB);
- }
-
- void LazyValueInfoCache::threadEdgeImpl(BasicBlock *OldSucc,
-@@ -306,10 +261,11 @@ void LazyValueInfoCache::threadEdgeImpl(BasicBlock *OldSucc,
- std::vector<BasicBlock*> worklist;
- worklist.push_back(OldSucc);
-
-- auto I = OverDefinedCache.find(OldSucc);
-- if (I == OverDefinedCache.end())
-+ auto I = BlockCache.find(OldSucc);
-+ if (I == BlockCache.end() || I->second.OverDefined.empty())
- return; // Nothing to process here.
-- SmallVector<Value *, 4> ValsToClear(I->second.begin(), I->second.end());
-+ SmallVector<Value *, 4> ValsToClear(I->second.OverDefined.begin(),
-+ I->second.OverDefined.end());
-
- // Use a worklist to perform a depth-first search of OldSucc's successors.
- // NOTE: We do not need a visited list since any blocks we have already
-@@ -323,10 +279,10 @@ void LazyValueInfoCache::threadEdgeImpl(BasicBlock *OldSucc,
- if (ToUpdate == NewSucc) continue;
-
- // If a value was marked overdefined in OldSucc, and is here too...
-- auto OI = OverDefinedCache.find(ToUpdate);
-- if (OI == OverDefinedCache.end())
-+ auto OI = BlockCache.find(ToUpdate);
-+ if (OI == BlockCache.end() || OI->second.OverDefined.empty())
- continue;
-- SmallPtrSetImpl<Value *> &ValueSet = OI->second;
-+ auto &ValueSet = OI->second.OverDefined;
-
- bool changed = false;
- for (Value *V : ValsToClear) {
-@@ -336,11 +292,6 @@ void LazyValueInfoCache::threadEdgeImpl(BasicBlock *OldSucc,
- // If we removed anything, then we potentially need to update
- // blocks successors too.
- changed = true;
--
-- if (ValueSet.empty()) {
-- OverDefinedCache.erase(OI);
-- break;
-- }
- }
-
- if (!changed) continue;
---
-2.28.0
-
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