RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-30 06:40:53 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Stop reallocating SunkAddrs for each basic block. When we move to an instruction

Browse Source 
worklist, the key will need to become std::pair<BasicBlock*, Value*>.

llvm-svn: 122932
This commit is contained in:
Cameron Zwarich 2011-01-06 00:42:50 +00:00
parent ba8ae674d7
commit eeea9f7113
1 changed files with 10 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
lib/Transforms/Scalar/CodeGenPrepare.cpp
View File

@ -71,6 +71,12 @@ namespace {
/// BackEdges - Keep a set of all the loop back edges.
///
SmallSet<std::pair<const BasicBlock*, const BasicBlock*>, 8> BackEdges;
// Keeps track of non-local addresses that have been sunk into a block. This
// allows us to avoid inserting duplicate code for blocks with multiple
// load/stores of the same address.
DenseMap<Value*, Value*> SunkAddrs;
public:
static char ID; // Pass identification, replacement for typeid
explicit CodeGenPrepare(const TargetLowering *tli = 0)
@ -141,6 +147,9 @@ bool CodeGenPrepare::runOnFunction(Function &F) {
MadeChange |= OptimizeBlock(*BB);
EverMadeChange |= MadeChange;
}
SunkAddrs.clear();
return EverMadeChange;
}
@ -968,10 +977,7 @@ bool CodeGenPrepare::OptimizeBlock(BasicBlock &BB) {
}
}
// Keep track of non-local addresses that have been sunk into this block.
// This allows us to avoid inserting duplicate code for blocks with multiple
// load/stores of the same address.
DenseMap<Value*, Value*> SunkAddrs;
SunkAddrs.clear();
for (BasicBlock::iterator BBI = BB.begin(), E = BB.end(); BBI != E; ) {
Instruction *I = BBI++;