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AMDGPU: Improve debug printing in SIFixSGPRLiveRanges 

llvm-svn: 245768
This commit is contained in:
Matt Arsenault 2015-08-22 00:19:25 +00:00
parent 6adf07a92e
commit aba29d6ab1
1 changed files with 15 additions and 6 deletions
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21
llvm/lib/Target/AMDGPU/SIFixSGPRLiveRanges.cpp
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@ -181,16 +181,25 @@ bool SIFixSGPRLiveRanges::runOnMachineFunction(MachineFunction &MF) {
bool LiveInToA = LIS->isLiveInToMBB(*LR, SuccA);
bool LiveInToB = LIS->isLiveInToMBB(*LR, SuccB);
if ((!LiveInToA && !LiveInToB) ||
(LiveInToA && LiveInToB))
if (!LiveInToA && !LiveInToB) {
DEBUG(dbgs() << PrintReg(Reg, TRI, 0)
<< " is live into neither successor\n");
continue;
}
if (LiveInToA && LiveInToB) {
DEBUG(dbgs() << PrintReg(Reg, TRI, 0)
<< " is live into both successors\n");
continue;
}
// This interval is live in to one successor, but not the other, so
// we need to update its range so it is live in to both.
DEBUG(dbgs() << "Possible SGPR conflict detected " << " in " << *LR <<
" BB#" << SuccA->getNumber() << ", BB#" <<
SuccB->getNumber() <<
" with NCD = " << NCD->getNumber() << '\n');
DEBUG(dbgs() << "Possible SGPR conflict detected for "
<< PrintReg(Reg, TRI, 0) << " in " << *LR
<< " BB#" << SuccA->getNumber() << ", BB#"
<< SuccB->getNumber()
<< " with NCD = BB#" << NCD->getNumber() << '\n');
assert(TargetRegisterInfo::isVirtualRegister(Reg) &&
"Not expecting to extend live range of physreg");