59 bool RISCVCodeGenPrepare::optimizeZExt(ZExtInst *ZExt) {  in optimizeZExt()  argument
63   Value *Src = ZExt->getOperand(0);  in optimizeZExt()
66   if (!ZExt->getType()->isIntegerTy(64) || !Src->getType()->isIntegerTy(32))  in optimizeZExt()
73                               Constant::getNullValue(Src->getType()), ZExt,  in optimizeZExt()
75     auto *SExt = new SExtInst(Src, ZExt->getType(), "", ZExt);  in optimizeZExt()
76     SExt->takeName(ZExt);  in optimizeZExt()
77     SExt->setDebugLoc(ZExt->getDebugLoc());  in optimizeZExt()
79     ZExt->replaceAllUsesWith(SExt);  in optimizeZExt()
80     ZExt->eraseFromParent();  in optimizeZExt()
89     auto *SExt = new SExtInst(Src, ZExt->getType(), "", ZExt);  in optimizeZExt()
90     SExt->takeName(ZExt);  in optimizeZExt()
91     SExt->setDebugLoc(ZExt->getDebugLoc());  in optimizeZExt()
93     ZExt->replaceAllUsesWith(SExt);  in optimizeZExt()
94     ZExt->eraseFromParent();  in optimizeZExt()
166       if (auto *ZExt = dyn_cast<ZExtInst>(&I))  in runOnFunction()  local
167         MadeChange |= optimizeZExt(ZExt);  in runOnFunction()