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LiveInterval: Use more range based for loops for value numbers and segments.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223978 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matthias Braun
2014-12-10 23:07:54 +00:00
parent 1e9d355499
commit 218d20a48b
8 changed files with 67 additions and 90 deletions
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16
include/llvm/CodeGen/LiveInterval.h
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@@ -218,14 +218,12 @@ namespace llvm {
/// another LiveRange.
LiveRange(const LiveRange &Other, BumpPtrAllocator &Allocator) {
// Duplicate valnos.
for (LiveRange::const_vni_iterator I = Other.vni_begin(),
E = Other.vni_end(); I != E; ++I) {
createValueCopy(*I, Allocator);
for (const VNInfo *VNI : Other.valnos) {
createValueCopy(VNI, Allocator);
}
// Now we can copy segments and remap their valnos.
for (LiveRange::const_iterator I = Other.begin(), E = Other.end();
I != E; ++I) {
segments.push_back(Segment(I->start, I->end, valnos[I->valno->id]));
for (const Segment &S : Other.segments) {
segments.push_back(Segment(S.start, S.end, valnos[S.valno->id]));
}
}
@@ -523,9 +521,9 @@ namespace llvm {
/// Returns true if the live range is zero length, i.e. no live segments
/// span instructions. It doesn't pay to spill such a range.
bool isZeroLength(SlotIndexes *Indexes) const {
for (const_iterator i = begin(), e = end(); i != e; ++i)
if (Indexes->getNextNonNullIndex(i->start).getBaseIndex() <
i->end.getBaseIndex())
for (const Segment &S : segments)
if (Indexes->getNextNonNullIndex(S.start).getBaseIndex() <
S.end.getBaseIndex())
return false;
return true;
}