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Duncan, Do a quick check here on x86_64-apple-darwin10 with svn llvm and svn dragon-egg against release gcc 4.5.0, the results from the himenoBMTxpa benchmark compiled at -O3 look pretty good. With stock gcc-4.5.0, we get... Grid-size = M mimax = 128 mjmax = 128 mkmax = 256 imax = 127 jmax = 127 kmax =255 Start rehearsal measurement process. Measure the performance in 3 times. MFLOPS: 156.560865 time(s): 2.575476 1.733593e-03 Now, start the actual measurement process. The loop will be excuted in 69 times This will take about one minute. Wait for a while...

Hi Peter, > Why not do this too? I've applied this - thanks for the patch! Ciao, Duncan.