[clang][wip] Add nondeterministic initialization for floating point

Author: jmciver

clang/lib/CodeGen/CGDecl.cpp

@@ -1597,7 +1597,8 @@ CodeGenFunction::EmitAutoVarAlloca(const VarDecl &D) {
       } else {
         assert(!emission.useLifetimeMarkers());
       }
-      if (allocaTy->isIntegerTy() && HaveInsertPoint()) {
+      if ((allocaTy->isIntegerTy() || allocaTy->isFloatingPointTy()) &&
+          HaveInsertPoint()) {
         auto Freeze = Builder.CreateFreeze(llvm::PoisonValue::get(allocaTy),
                                            "freeze.poison");
         Builder.CreateStore(Freeze, address);