From c731c97facb5ff56daceb724d75f1f14e8d01f39 Mon Sep 17 00:00:00 2001 From: Dan Gohman Date: Wed, 3 Oct 2007 19:26:29 +0000 Subject: Use empty() member functions when that's what's being tested for instead of comparing begin() and end(). llvm-svn: 42585 --- llvm/lib/CodeGen/LiveIntervalAnalysis.cpp | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) (limited to 'llvm/lib/CodeGen/LiveIntervalAnalysis.cpp') diff --git a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp index e7abd47f536..88eeff7605a 100644 --- a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -817,17 +817,15 @@ void LiveIntervals::computeIntervals() { MachineBasicBlock::iterator MI = MBB->begin(), miEnd = MBB->end(); - if (MBB->livein_begin() != MBB->livein_end()) { - // Create intervals for live-ins to this BB first. - for (MachineBasicBlock::const_livein_iterator LI = MBB->livein_begin(), - LE = MBB->livein_end(); LI != LE; ++LI) { - handleLiveInRegister(MBB, MIIndex, getOrCreateInterval(*LI)); - // Multiple live-ins can alias the same register. - for (const unsigned* AS = mri_->getSubRegisters(*LI); *AS; ++AS) - if (!hasInterval(*AS)) - handleLiveInRegister(MBB, MIIndex, getOrCreateInterval(*AS), - true); - } + // Create intervals for live-ins to this BB first. + for (MachineBasicBlock::const_livein_iterator LI = MBB->livein_begin(), + LE = MBB->livein_end(); LI != LE; ++LI) { + handleLiveInRegister(MBB, MIIndex, getOrCreateInterval(*LI)); + // Multiple live-ins can alias the same register. + for (const unsigned* AS = mri_->getSubRegisters(*LI); *AS; ++AS) + if (!hasInterval(*AS)) + handleLiveInRegister(MBB, MIIndex, getOrCreateInterval(*AS), + true); } for (; MI != miEnd; ++MI) { -- cgit v1.2.3