From 0e5a60b4ebc06a4fe6bb58f0200acf130d7be685 Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Tue, 5 Jun 2012 23:57:30 +0000 Subject: Move LiveUnionArray into LiveIntervalUnion.h It is useful outside RegAllocBase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158041 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/LiveIntervalUnion.cpp | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'lib/CodeGen/LiveIntervalUnion.cpp') diff --git a/lib/CodeGen/LiveIntervalUnion.cpp b/lib/CodeGen/LiveIntervalUnion.cpp index 9c579aff68..dadd02bfc6 100644 --- a/lib/CodeGen/LiveIntervalUnion.cpp +++ b/lib/CodeGen/LiveIntervalUnion.cpp @@ -208,3 +208,26 @@ bool LiveIntervalUnion::Query::checkLoopInterference(MachineLoopRange *Loop) { VRI = VirtReg->advanceTo(VRI, Overlaps.start()); } } + +void LiveIntervalUnion::Array::init(LiveIntervalUnion::Allocator &Alloc, + unsigned NSize) { + // Reuse existing allocation. + if (NSize == Size) + return; + clear(); + Size = NSize; + LIUs = static_cast( + malloc(sizeof(LiveIntervalUnion)*NSize)); + for (unsigned i = 0; i != Size; ++i) + new(LIUs + i) LiveIntervalUnion(Alloc); +} + +void LiveIntervalUnion::Array::clear() { + if (!LIUs) + return; + for (unsigned i = 0; i != Size; ++i) + LIUs[i].~LiveIntervalUnion(); + free(LIUs); + Size = 0; + LIUs = 0; +} -- cgit v1.2.3-70-g09d2