switch (Name[0]) {
default: break;
+ case 'i':
+ // This upgrades the old llvm.init.trampoline to the new
+ // llvm.init.trampoline and llvm.adjust.trampoline pair.
+ if (Name == "init.trampoline") {
+ // The new llvm.init.trampoline returns nothing.
+ if (FTy->getReturnType()->isVoidTy())
+ break;
+
+ assert(FTy->getNumParams() == 3 && "old init.trampoline takes 3 args!");
+
+ // Change the name of the old intrinsic so that we can play with its type.
+ std::string NameTmp = F->getName();
+ F->setName("");
+ NewFn = cast<Function>(M->getOrInsertFunction(
+ NameTmp,
+ Type::getVoidTy(M->getContext()),
+ FTy->getParamType(0), FTy->getParamType(1),
+ FTy->getParamType(2), (Type *)0));
+ return true;
+ }
case 'p':
// This upgrades the llvm.prefetch intrinsic to accept one more parameter,
// which is a instruction / data cache identifier. The old version only
CI->eraseFromParent();
break;
}
+ case Intrinsic::init_trampoline: {
+
+ // Transform
+ // %tramp = call i8* llvm.init.trampoline (i8* x, i8* y, i8* z)
+ // to
+ // call void llvm.init.trampoline (i8* %x, i8* %y, i8* %z)
+ // %tramp = call i8* llvm.adjust.trampoline (i8* %x)
+
+ Function *AdjustTrampolineFn =
+ cast<Function>(Intrinsic::getDeclaration(F->getParent(),
+ Intrinsic::adjust_trampoline));
+
+ IRBuilder<> Builder(C);
+ Builder.SetInsertPoint(CI);
+
+ Builder.CreateCall3(NewFn, CI->getArgOperand(0), CI->getArgOperand(1),
+ CI->getArgOperand(2));
+
+ CallInst *AdjustCall = Builder.CreateCall(AdjustTrampolineFn,
+ CI->getArgOperand(0),
+ CI->getName());
+ if (!CI->use_empty())
+ CI->replaceAllUsesWith(AdjustCall);
+ CI->eraseFromParent();
+ break;
+ }
}
}