Remove some dead code and tidy things up now that vectors use ConstantDataVector
instead of always using ConstantVector.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149912 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp
index 1a18247..b5811f2 100644
--- a/lib/Analysis/ValueTracking.cpp
+++ b/lib/Analysis/ValueTracking.cpp
@@ -88,19 +88,8 @@
return;
}
// Handle a constant vector by taking the intersection of the known bits of
- // each element.
- // FIXME: Remove.
- if (ConstantVector *CV = dyn_cast<ConstantVector>(V)) {
- KnownZero.setAllBits(); KnownOne.setAllBits();
- for (unsigned i = 0, e = CV->getNumOperands(); i != e; ++i) {
- APInt KnownZero2(BitWidth, 0), KnownOne2(BitWidth, 0);
- ComputeMaskedBits(CV->getOperand(i), Mask, KnownZero2, KnownOne2,
- TD, Depth);
- KnownZero &= KnownZero2;
- KnownOne &= KnownOne2;
- }
- return;
- }
+ // each element. There is no real need to handle ConstantVector here, because
+ // we don't handle undef in any particularly useful way.
if (ConstantDataSequential *CDS = dyn_cast<ConstantDataSequential>(V)) {
// We know that CDS must be a vector of integers. Take the intersection of
// each element.