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[LVI] Revert the remainder of "r218231 - Add two thresholds lvi-overdefined-BB-threshold and lvi-overdefined-threshold"

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Some of r218231 was reverted with the code that used it in r218971, but not all
of it. This removes the rest (which is now dead).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219469 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel
2014-10-10 03:56:24 +00:00
parent df89f0dbaa
commit 9a97f23f2f
1 changed files with 0 additions and 22 deletions
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22
lib/Analysis/LazyValueInfo.cpp
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@ -27,7 +27,6 @@
#include "llvm/IR/IntrinsicInst.h" #include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/PatternMatch.h" #include "llvm/IR/PatternMatch.h"
#include "llvm/IR/ValueHandle.h" #include "llvm/IR/ValueHandle.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h" #include "llvm/Support/Debug.h"
#include "llvm/Support/raw_ostream.h" #include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetLibraryInfo.h" #include "llvm/Target/TargetLibraryInfo.h"
@ -38,20 +37,6 @@ using namespace PatternMatch;
#define DEBUG_TYPE "lazy-value-info" #define DEBUG_TYPE "lazy-value-info"
// Experimentally derived threshold for the number of basic blocks lowered for
// lattice value overdefined.
static cl::opt<unsigned>
OverdefinedBBThreshold("lvi-overdefined-BB-threshold",
cl::init(1500), cl::Hidden,
cl::desc("Threshold of the number of basic blocks lowered for lattice value"
"'overdefined'."));
// Experimentally derived threshold for additional lowering lattice values
// overdefined per block.
static cl::opt<unsigned>
OverdefinedThreshold("lvi-overdefined-threshold", cl::init(10), cl::Hidden,
cl::desc("Threshold of lowering lattice value 'overdefined'."));
char LazyValueInfo::ID = 0; char LazyValueInfo::ID = 0;
INITIALIZE_PASS_BEGIN(LazyValueInfo, "lazy-value-info", INITIALIZE_PASS_BEGIN(LazyValueInfo, "lazy-value-info",
"Lazy Value Information Analysis", false, true) "Lazy Value Information Analysis", false, true)
@ -363,9 +348,6 @@ namespace {
const DataLayout *DL; const DataLayout *DL;
/// An optional DT pointer. /// An optional DT pointer.
DominatorTree *DT; DominatorTree *DT;
/// A counter to record how many times Overdefined has been tried to be
/// lowered.
DenseMap<BasicBlock *, unsigned> LoweringOverdefinedTimes;
friend struct LVIValueHandle; friend struct LVIValueHandle;
@ -498,9 +480,6 @@ void LazyValueInfoCache::eraseBlock(BasicBlock *BB) {
} }
void LazyValueInfoCache::solve() { void LazyValueInfoCache::solve() {
// Reset the counter of lowering overdefined value.
LoweringOverdefinedTimes.clear();
while (!BlockValueStack.empty()) { while (!BlockValueStack.empty()) {
std::pair<BasicBlock*, Value*> &e = BlockValueStack.top(); std::pair<BasicBlock*, Value*> &e = BlockValueStack.top();
if (solveBlockValue(e.second, e.first)) { if (solveBlockValue(e.second, e.first)) {
@ -559,7 +538,6 @@ bool LazyValueInfoCache::solveBlockValue(Value *Val, BasicBlock *BB) {
// lattice value to overdefined, so that cycles will terminate and be // lattice value to overdefined, so that cycles will terminate and be
// conservatively correct. // conservatively correct.
BBLV.markOverdefined(); BBLV.markOverdefined();
++LoweringOverdefinedTimes[BB];
Instruction *BBI = dyn_cast<Instruction>(Val); Instruction *BBI = dyn_cast<Instruction>(Val);
if (!BBI || BBI->getParent() != BB) { if (!BBI || BBI->getParent() != BB) {