From e52eef8e9a10ada9efc1fed115e5b6eefb22b1da Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Tue, 17 Apr 2007 20:25:11 +0000 Subject: Add a register allocation preference field; add a method to compute size of a live interval. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36216 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/LiveInterval.cpp | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'lib/CodeGen/LiveInterval.cpp') diff --git a/lib/CodeGen/LiveInterval.cpp b/lib/CodeGen/LiveInterval.cpp index 0ca16007b2..45c1dd03da 100644 --- a/lib/CodeGen/LiveInterval.cpp +++ b/lib/CodeGen/LiveInterval.cpp @@ -349,6 +349,8 @@ void LiveInterval::join(LiveInterval &Other, int *LHSValNoAssignments, ValueNumberInfo.clear(); ValueNumberInfo.append(NewValueNumberInfo.begin(), NewValueNumberInfo.end()); weight += Other.weight; + if (Other.preference && !preference) + preference = Other.preference; } /// MergeRangesInAsValue - Merge all of the intervals in RHS into this live @@ -467,6 +469,13 @@ void LiveInterval::MergeValueNumberInto(unsigned V1, unsigned V2) { } } +unsigned LiveInterval::getSize() const { + unsigned Sum = 0; + for (const_iterator I = begin(), E = end(); I != E; ++I) + Sum += I->end - I->start; + return Sum; +} + std::ostream& llvm::operator<<(std::ostream& os, const LiveRange &LR) { return os << '[' << LR.start << ',' << LR.end << ':' << LR.ValId << ")"; } -- cgit v1.2.3-70-g09d2