MSCI's broadest index of Asia-Pacific shares outside Japan ticked up 0.2 percent to the highest in almost two weeks. Australia's main index added 0.75 percent.

Already shallow liquidity was drained further by the absence of Tokyo for a holiday, while on Thursday a host of markets globally will be either shut or closing early.

The data cupboard was also bare for Asia, leaving investors waiting on a hefty helping of U.S. figures covering personal incomes and spending, inflation and durable goods orders.

Equity investors were encouraged by a second session of gain for Wall Street. The Dow ended Tuesday up almost 1 percent, while the S&P 500 gained 0.88 percent and the Nasdaq 0.65 percent.

Economic data showed a slight downward revision in U.S. economic growth to an annualised 2.0 percent, but that still pipped forecasts and consumer demand held up well.

More bearishly for bonds, the Federal Reserve's preferred measure of core inflation was revised up a tick to 1.4 percent. That could add to the Fed's confidence that inflation would rise toward 2 percent over time and thus support its central forecast of 100 basis points of interest rate hikes next year.

Many bond investors have been wagering inflation would stay more subdued and the data triggered a round of profit-taking in Treasuries, particularly in popular curve-flattening trades.

Yields on 10-year and 30-year Treasury paper both rose around 4 basis points.

Fixed-income assets have also been greatly aided by the long slide in oil prices so any hint of a steadying in crude tends to weigh on bonds.

U.S. West Texas Intermediate (WTI) crude futures were quoted 26 cents higher at $36.40 a barrel. Brent was steady at $36.11 a barrel.

Both saw a slight boost after the American Petroleum Institute, an industry trade group, released data showing an unexpected drop in stockpiles.

In currency markets the dollar continued its glacial decline as speculators pared long positions in the wake of last week's U.S. rate increase.

The U.S. dollar was steady on the yen at 121.02, having touched a one-week low overnight, while the euro was a shade firmer at $1.0950.

Against a basket of currencies, the dollar was off 0.02 percent at 98.213.

REUTERS