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From: | Paul Eggert |
Subject: | Can we revert "avoid 64-bit intrinsics on 32-bit Windows"? |
Date: | Tue, 06 Jan 2015 09:07:29 -0800 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 |
On 01/06/2015 08:51 AM, Paul Eggert wrote:
-# pragma intrinsic _BitReverse -# pragma intrinsic _BitReverse64 +# pragma intrinsic _BitScanReverse +# pragma intrinsic _BitScanReverse64
Come to think of it, now that this typo is fixed, we should be able to revert the "avoid 64-bit intrinsics on 32-bit Windows" patch, right? That patch added complexity that I'd rather avoid. I think the previous diagnosis that the intrinsic is missing on 32-bit Windows is incorrect.
If we really need something like that patch, let's put it into the "#elif _MSC_VER" section so that it's more easily separable from the mainline code. For now I reverted it by using the attached.
0001-count-leading-zeros-use-64-bit-intrinsics-on-32-bit-.patch
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