nothing to do with dead instruction elimination. No tests in
dejagnu depend on this, so I don't know what it was needed for.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60202
91177308-0d34-0410-b5e6-
96231b3b80d8
while (!Insts.empty()) {
I = *Insts.begin();
Insts.erase(I);
-
- // If this is a PHI node, we may be able to make it dead if we know all the
- // input values are the same.
- if (PHINode *PN = dyn_cast<PHINode>(I)) {
- if (Value *PNV = PN->hasConstantValue())
- PN->replaceAllUsesWith(PNV);
- }
-
+
// Okay, if the instruction is dead, delete it.
if (!isInstructionTriviallyDead(I))
continue;