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Work on LiveRange instead of LiveInterval where possible

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Also change some pointer arguments to references at some places where
0-pointers are not allowed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192396 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matthias Braun
2013-10-10 21:28:57 +00:00
parent a4aed9ae39
commit e25dde550b
6 changed files with 63 additions and 69 deletions
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lib/CodeGen/LiveIntervalAnalysis.cpp
+7 -7
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@@ -177,9 +177,9 @@ LiveInterval* LiveIntervals::createInterval(unsigned reg) {
/// computeVirtRegInterval - Compute the live interval of a virtual register,
/// based on defs and uses.
void LiveIntervals::computeVirtRegInterval(LiveInterval *LI) {
void LiveIntervals::computeVirtRegInterval(LiveInterval &LI) {
assert(LRCalc && "LRCalc not initialized.");
assert(LI->empty() && "Should only compute empty intervals.");
assert(LI.empty() && "Should only compute empty intervals.");
LRCalc->reset(MF, getSlotIndexes(), DomTree, &getVNInfoAllocator());
LRCalc->createDeadDefs(LI);
LRCalc->extendToUses(LI);
@@ -230,8 +230,8 @@ void LiveIntervals::computeRegMasks() {
/// computeRegUnitInterval - Compute the live interval of a register unit, based
/// on the uses and defs of aliasing registers. The interval should be empty,
/// or contain only dead phi-defs from ABI blocks.
void LiveIntervals::computeRegUnitInterval(LiveInterval *LI) {
unsigned Unit = LI->reg;
void LiveIntervals::computeRegUnitInterval(LiveInterval &LI) {
unsigned Unit = LI.reg;
assert(LRCalc && "LRCalc not initialized.");
LRCalc->reset(MF, getSlotIndexes(), DomTree, &getVNInfoAllocator());
@@ -305,7 +305,7 @@ void LiveIntervals::computeLiveInRegUnits() {
// Compute the 'normal' part of the intervals.
for (unsigned i = 0, e = NewIntvs.size(); i != e; ++i)
computeRegUnitInterval(NewIntvs[i]);
computeRegUnitInterval(*NewIntvs[i]);
}
@@ -440,12 +440,12 @@ bool LiveIntervals::shrinkToUses(LiveInterval *li,
return CanSeparate;
}
void LiveIntervals::extendToIndices(LiveInterval *LI,
void LiveIntervals::extendToIndices(LiveRange &LR,
ArrayRef<SlotIndex> Indices) {
assert(LRCalc && "LRCalc not initialized.");
LRCalc->reset(MF, getSlotIndexes(), DomTree, &getVNInfoAllocator());
for (unsigned i = 0, e = Indices.size(); i != e; ++i)
LRCalc->extend(LI, Indices[i]);
LRCalc->extend(LR, Indices[i]);
}
void LiveIntervals::pruneValue(LiveInterval *LI, SlotIndex Kill,