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fix documentation comments; NFC

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llvm-svn: 270234
This commit is contained in:
Sanjay Patel 2016-05-20 16:46:01 +00:00
parent e163deaf59
commit 56256e385a
1 changed files with 8 additions and 9 deletions
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17
lib/Target/X86/X86VZeroUpper.cpp
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@ -142,8 +142,7 @@ static bool hasYmmReg(MachineInstr *MI) {
return false;
}
/// clobbersAnyYmmReg() - Check if any YMM register will be clobbered by this
/// instruction.
/// Check if any YMM register will be clobbered by this instruction.
static bool callClobbersAnyYmmReg(MachineInstr *MI) {
assert(MI->isCall() && "Can only be called on call instructions.");
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
@ -158,16 +157,16 @@ static bool callClobbersAnyYmmReg(MachineInstr *MI) {
return false;
}
// Insert a vzeroupper instruction before I.
/// Insert a vzeroupper instruction before I.
void VZeroUpperInserter::insertVZeroUpper(MachineBasicBlock::iterator I,
MachineBasicBlock &MBB) {
MachineBasicBlock &MBB) {
DebugLoc dl = I->getDebugLoc();
BuildMI(MBB, I, dl, TII->get(X86::VZEROUPPER));
++NumVZU;
EverMadeChange = true;
}
// Add MBB to the DirtySuccessors list if it hasn't already been added.
/// Add MBB to the DirtySuccessors list if it hasn't already been added.
void VZeroUpperInserter::addDirtySuccessor(MachineBasicBlock &MBB) {
if (!BlockStates[MBB.getNumber()].AddedToDirtySuccessors) {
DirtySuccessors.push_back(&MBB);
@ -175,8 +174,8 @@ void VZeroUpperInserter::addDirtySuccessor(MachineBasicBlock &MBB) {
}
}
/// processBasicBlock - Loop over all of the instructions in the basic block,
/// inserting vzeroupper instructions before function calls.
/// Loop over all of the instructions in the basic block, inserting vzeroupper
/// instructions before function calls.
void VZeroUpperInserter::processBasicBlock(MachineBasicBlock &MBB) {
// Start by assuming that the block PASS_THROUGH, which implies no unguarded
@ -252,8 +251,8 @@ void VZeroUpperInserter::processBasicBlock(MachineBasicBlock &MBB) {
BlockStates[MBB.getNumber()].ExitState = CurState;
}
/// runOnMachineFunction - Loop over all of the basic blocks, inserting
/// vzeroupper instructions before function calls.
/// Loop over all of the basic blocks, inserting vzeroupper instructions before
/// function calls.
bool VZeroUpperInserter::runOnMachineFunction(MachineFunction &MF) {
const X86Subtarget &ST = MF.getSubtarget<X86Subtarget>();
if (!ST.hasAVX() || ST.hasAVX512() || ST.hasFastPartialYMMWrite())