The AFL-CIO renewed its assault on Carter administration energy and economic policies yesterday, labeling its anti-inflation program an "absolute flop" and declaring that decontrol of domestic oil prices "must be stopped."

The positions, adopted by the AFL-CIO Executive Council at its annual spring meeting here, indicated to abatement of the labor federation's hostility to major administration domestic policies.

"Continuation of 7 percent wage guideline in the face of the reality of double-digit inflation is unfair and irrational, and the methods used by the government to enforce it are illegal," asserted the union leaders, who are parties seeking to bar the government from enforcing the guidelines.

As for the administration's plan to phase out controls on domestic oil prices by 1981, the council said decontrol will "accentuate the already steep rise in oil prices and their products, with similar increases in other energy prices." The council called it "rationing-by-price, the most unfair system of rationing that could be devised."

The Executive Council pledged "maximum support" to congressional efforts to block the decontrol plan, which are believed likely to founder in the Senate. But it took no stand on the administration's proposed "windfall profits tax" on some of the extra money that oil companies would get from the price increase.

Although the council said the price increases would "further pad bloated oil company profits," AFL-CIO public relations director Albert A. Zack said union lobbyists will concentrate on blocking decontrol, thereby obviating the need for a profits levy.

The day-long council session was marked by the absence of AFL-CIO President George Meany, who was hospitalized two weeks ago for a knee injury suffered during a golfing vacation last month. It was only the third time since the merged federation was formed 24 years ago-the first time since 1972-that the 84-year-old Meany has had to skip a council meeting.

Meany's hospitalization-his second this year-raised questions about whether he will seek another two-year term at the AFL-CIO convention this fall. He has shown no signs of wanting to retire, and Zack said yesterday Meany is "feeling fine" and anticipates being released today.

In other action yesterday, the council urged renegotiation of two key segments of the multilateral trade agreement that is expected to be submitted to Congress shortly, while continuing to withhold judgment on the package as a whole.

It proposed renegotiation of codes aimed at relaxing restrictions on government procurement and at eliminating product standards that impede import expansion, "so that U.S. interests will be protected."

It also endorsed congressional efforts to streamline government regulatory programs but objected to "rigid" rules requiring cost-benefit analyses that would "place dollar costs above social values."