maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

More clean up, still NFC. Remove dead variables now that the casts are gone. 

llvm-svn: 245420
This commit is contained in:
Nick Lewycky 2015-08-19 06:25:30 +00:00
parent 2c852543a3
commit 1098e496e1
1 changed files with 4 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
llvm/lib/Transforms/Scalar/LoopIdiomRecognize.cpp
View File

@ -919,7 +919,7 @@ void LoopIdiomRecognize::transformLoopToPopcount(BasicBlock *PreCondBB,
}
// Step 2: Replace the precondition from "if (x == 0) goto loop-exit" to
// "if (NewCount == 0) loop-exit". Withtout this change, the intrinsic
// "if (NewCount == 0) loop-exit". Without this change, the intrinsic
// function would be partial dead code, and downstream passes will drag
// it back from the precondition block to the preheader.
{
@ -938,7 +938,7 @@ void LoopIdiomRecognize::transformLoopToPopcount(BasicBlock *PreCondBB,
}
// Step 3: Note that the population count is exactly the trip count of the
// loop in question, which enble us to to convert the loop from noncountable
// loop in question, which enable us to to convert the loop from noncountable
// loop into a countable one. The benefit is twofold:
//
// - If the loop only counts population, the entire loop becomes dead after
@ -966,10 +966,9 @@ void LoopIdiomRecognize::transformLoopToPopcount(BasicBlock *PreCondBB,
PHINode *TcPhi = PHINode::Create(Ty, 2, "tcphi", Body->begin());
Builder.SetInsertPoint(LbCond);
Value *Opnd1 = TcPhi;
Value *Opnd2 = ConstantInt::get(Ty, 1);
Instruction *TcDec = cast<Instruction>(
Builder.CreateSub(Opnd1, Opnd2, "tcdec", false, true));
Builder.CreateSub(TcPhi, ConstantInt::get(Ty, 1),
"tcdec", false, true));
TcPhi->addIncoming(TripCnt, PreHead);
TcPhi->addIncoming(TcDec, Body);