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Fix LiveInterval::getOverlapingRanges to take things in the right order

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(an unused method).

Fix the merger so that it can merge ranges like this  [10:12)[16:40) with
[12:38) into [10:40) instead of bogus ranges.  This sort of input will be
possible for the merger coming shortly


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23865 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-10-21 06:41:30 +00:00
parent ae1641c39f
commit 9e20d352c2
1 changed files with 3 additions and 3 deletions
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6
lib/CodeGen/LiveInterval.cpp
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@ -164,8 +164,8 @@ bool LiveInterval::joinable(const LiveInterval &other, unsigned CopyIdx) const {
void LiveInterval::getOverlapingRanges(const LiveInterval &other,
unsigned CopyIdx,
std::vector<LiveRange*> &Ranges) {
const LiveRange *SourceLR = other.getLiveRangeContaining(CopyIdx-1);
const LiveRange *DestLR = getLiveRangeContaining(CopyIdx);
const LiveRange *SourceLR = getLiveRangeContaining(CopyIdx-1);
const LiveRange *DestLR = other.getLiveRangeContaining(CopyIdx);
assert(SourceLR && DestLR && "Not joining due to a copy?");
unsigned OtherValIdx = SourceLR->ValId;
unsigned ThisValIdx = DestLR->ValId;
@ -219,7 +219,7 @@ void LiveInterval::extendIntervalEndTo(Ranges::iterator I, unsigned NewEnd) {
// If the newly formed range now touches the range after it and if they have
// the same value number, merge the two ranges into one range.
Ranges::iterator Next = next(I);
if (Next != ranges.end() && Next->start == I->end && Next->ValId == ValId) {
if (Next != ranges.end() && Next->start <= I->end && Next->ValId == ValId) {
I->end = Next->end;
ranges.erase(Next);
}