warning: right shift count >= width of type

[Andreas Schwab]

Paul Schlie <schlie@comcast.net> writes:

> It likely needs to define what (x << z) means if:
>
> - z lesser-or-equal-to 0, [i.e. does (x << -1) == (x >> 1) ?]

Since left and right shift are usually separate insns this would result in
a runtime penalty.

Andreas.

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Andreas Schwab, SuSE Labs, schwab@suse.de
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