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Pass LiveQueryResult by value

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This makes the API a bit more natural to use and makes it easier to make
LiveRanges implementation details private.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192394 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matthias Braun
2013-10-10 21:28:52 +00:00
parent 87a86058fa
commit 5649e25ce8
10 changed files with 125 additions and 117 deletions
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6
lib/CodeGen/RegisterPressure.cpp
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@@ -513,7 +513,7 @@ bool RegPressureTracker::recede(SmallVectorImpl<unsigned> *LiveUses,
const LiveInterval *LI = getInterval(Reg);
// Check if this LR is killed and not redefined here.
if (LI) {
LiveRangeQuery LRQ(*LI, SlotIdx);
LiveQueryResult LRQ = LI->Query(SlotIdx);
if (!LRQ.isKill() && !LRQ.valueDefined())
discoverLiveOut(Reg);
}
@@ -571,7 +571,7 @@ bool RegPressureTracker::advance() {
bool lastUse = false;
if (RequireIntervals) {
const LiveInterval *LI = getInterval(Reg);
lastUse = LI && LiveRangeQuery(*LI, SlotIdx).isKill();
lastUse = LI && LI->Query(SlotIdx).isKill();
}
else {
// Allocatable physregs are always single-use before register rewriting.
@@ -896,7 +896,7 @@ void RegPressureTracker::bumpDownwardPressure(const MachineInstr *MI) {
SlotIndex CurrIdx = getCurrSlot();
const LiveInterval *LI = getInterval(Reg);
if (LI) {
LiveRangeQuery LRQ(*LI, SlotIdx);
LiveQueryResult LRQ = LI->Query(SlotIdx);
if (LRQ.isKill() && !findUseBetween(Reg, CurrIdx, SlotIdx, MRI, LIS))
decreaseRegPressure(Reg);
}