[InstCombine] move declarations closer to uses; NFC
llvm-svn: 340930
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp b/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
index 7be6dd0..b415c83 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
@@ -1353,9 +1353,6 @@
Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
Value *LHS = SVI.getOperand(0);
Value *RHS = SVI.getOperand(1);
- SmallVector<int, 16> Mask = SVI.getShuffleMask();
- Type *Int32Ty = Type::getInt32Ty(SVI.getContext());
-
if (auto *V = SimplifyShuffleVectorInst(
LHS, RHS, SVI.getMask(), SVI.getType(), SQ.getWithInstruction(&SVI)))
return replaceInstUsesWith(SVI, V);
@@ -1363,9 +1360,7 @@
if (Instruction *I = foldSelectShuffle(SVI, Builder, DL))
return I;
- bool MadeChange = false;
unsigned VWidth = SVI.getType()->getVectorNumElements();
-
APInt UndefElts(VWidth, 0);
APInt AllOnesEltMask(APInt::getAllOnesValue(VWidth));
if (Value *V = SimplifyDemandedVectorElts(&SVI, AllOnesEltMask, UndefElts)) {
@@ -1374,7 +1369,10 @@
return &SVI;
}
+ SmallVector<int, 16> Mask = SVI.getShuffleMask();
+ Type *Int32Ty = Type::getInt32Ty(SVI.getContext());
unsigned LHSWidth = LHS->getType()->getVectorNumElements();
+ bool MadeChange = false;
// Canonicalize shuffle(x ,x,mask) -> shuffle(x, undef,mask')
// Canonicalize shuffle(undef,x,mask) -> shuffle(x, undef,mask').