[PowerPC] fix trivial typos in comment, NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@334583 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCMIPeephole.cpp b/lib/Target/PowerPC/PPCMIPeephole.cpp
index 79bba98..dbe1fe3 100644
--- a/lib/Target/PowerPC/PPCMIPeephole.cpp
+++ b/lib/Target/PowerPC/PPCMIPeephole.cpp
@@ -190,18 +190,18 @@
}
// This function maintains a map for the pairs <TOC Save Instr, Keep>
-// Each time a new TOC save is encountered, it checks if any of the exisiting
-// ones are dominated by the new one. If so, it marks the exisiting one as
+// Each time a new TOC save is encountered, it checks if any of the existing
+// ones are dominated by the new one. If so, it marks the existing one as
// redundant by setting it's entry in the map as false. It then adds the new
// instruction to the map with either true or false depending on if any
-// exisiting instructions dominated the new one.
+// existing instructions dominated the new one.
void PPCMIPeephole::UpdateTOCSaves(
std::map<MachineInstr *, bool> &TOCSaves, MachineInstr *MI) {
assert(TII->isTOCSaveMI(*MI) && "Expecting a TOC save instruction here");
bool Keep = true;
for (auto It = TOCSaves.begin(); It != TOCSaves.end(); It++ ) {
MachineInstr *CurrInst = It->first;
- // If new instruction dominates an exisiting one, mark exisiting one as
+ // If new instruction dominates an existing one, mark existing one as
// redundant.
if (It->second && MDT->dominates(MI, CurrInst))
It->second = false;
@@ -276,7 +276,7 @@
!MF->getSubtarget<PPCSubtarget>().isELFv2ABI())
break;
// When encountering a TOC save instruction, call UpdateTOCSaves
- // to add it to the TOCSaves map and mark any exisiting TOC saves
+ // to add it to the TOCSaves map and mark any existing TOC saves
// it dominates as redundant.
if (TII->isTOCSaveMI(MI))
UpdateTOCSaves(TOCSaves, &MI);
@@ -847,7 +847,7 @@
return 0;
}
-// This takes a Phi node and returns a register value for the spefied BB.
+// This takes a Phi node and returns a register value for the specified BB.
static unsigned getIncomingRegForBlock(MachineInstr *Phi,
MachineBasicBlock *MBB) {
for (unsigned I = 2, E = Phi->getNumOperands() + 1; I != E; I += 2) {
@@ -1190,7 +1190,7 @@
}
}
- // We cannnot merge two compares if the immediates are not same.
+ // We cannot merge two compares if the immediates are not same.
if (NewImm2 != NewImm1)
continue;
}
