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Constant folding here is pointless, because InstructionSimplify 

(which does constant folding and more) is called a few lines
later.

llvm-svn: 120042
This commit is contained in:
Duncan Sands 2010-11-23 20:24:21 +00:00
parent 968df4fdff
commit bb2cd025a9
1 changed files with 1 additions and 8 deletions
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9
llvm/lib/Transforms/Scalar/LoopUnswitch.cpp
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@ -32,7 +32,6 @@
#include "llvm/DerivedTypes.h"
#include "llvm/Function.h"
#include "llvm/Instructions.h"
#include "llvm/Analysis/ConstantFolding.h"
#include "llvm/Analysis/InlineCost.h"
#include "llvm/Analysis/InstructionSimplify.h"
#include "llvm/Analysis/LoopInfo.h"
@ -969,13 +968,7 @@ void LoopUnswitch::SimplifyCode(std::vector<Instruction*> &Worklist, Loop *L) {
while (!Worklist.empty()) {
Instruction *I = Worklist.back();
Worklist.pop_back();
// Simple constant folding.
if (Constant *C = ConstantFoldInstruction(I)) {
ReplaceUsesOfWith(I, C, Worklist, L, LPM);
continue;
}
// Simple DCE.
if (isInstructionTriviallyDead(I)) {
DEBUG(dbgs() << "Remove dead instruction '" << *I);