On 2014/03/12 12:17:26, ulan wrote:
Any reason why you didn't choose the algorithm that is used in other
places?
In pseudocode:
counter = field_count - 2;
while (counter >= 0) {
store pair of fillers;
counter -= 2;
}
if (counter & 1) {
store one remaining filler;
}
As we don't have conditional stores on A64, I was trying to avoid the 50/50
predicted taken branch over the final 'odd' store. I decided a (half)
repeated
store was cheaper than a branch misprediction.
https://codereview.chromium.org/190763012/
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