From: Richard Henderson <richard.henderson@linaro.org>
To: Taylor Simpson <tsimpson@quicinc.com>, qemu-devel@nongnu.org
Cc: ale@rev.ng, bcain@quicinc.com, philmd@redhat.com,
peter.maydell@linaro.org
Subject: Re: [PATCH 11/20] Hexagon HVX (target/hexagon) instruction utility functions
Date: Sun, 25 Jul 2021 03:21:18 -1000 [thread overview]
Message-ID: <e6275f42-7dfe-2eb2-37ff-bb60aec15b8b@linaro.org> (raw)
In-Reply-To: <1625528074-19440-12-git-send-email-tsimpson@quicinc.com>
On 7/5/21 1:34 PM, Taylor Simpson wrote:
> Functions to support scatter/gather
...
> +uint32_t count_leading_ones_2(uint16_t src)
> +{
> + int ret;
> + for (ret = 0; src & 0x8000; src <<= 1) {
> + ret++;
> + }
> + return ret;
> +}
Not related to scatter/gather.
Also, much better implemented as
clz32(~src & 0xffff) - 16
r~
next prev parent reply other threads:[~2021-07-25 13:22 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-05 23:34 [PATCH 00/20] Hexagon HVX (target/hexagon) patch series Taylor Simpson
2021-07-05 23:34 ` [PATCH 01/20] Hexagon HVX (target/hexagon) README Taylor Simpson
2021-07-12 8:16 ` Rob Landley
2021-07-12 13:42 ` Brian Cain
2021-07-19 1:10 ` Rob Landley
2021-07-19 13:39 ` Brian Cain
2021-07-19 16:19 ` Sid Manning
2021-07-26 7:57 ` Rob Landley
2021-07-26 8:54 ` Rob Landley
2021-07-26 13:59 ` Taylor Simpson
2021-07-28 8:11 ` Rob Landley
2021-11-25 6:26 ` Rob Landley
2021-07-05 23:34 ` [PATCH 02/20] Hexagon HVX (target/hexagon) add Hexagon Vector eXtensions (HVX) to core Taylor Simpson
2021-07-25 13:08 ` Richard Henderson
2021-07-26 4:02 ` Taylor Simpson
2021-07-27 17:21 ` Taylor Simpson
2021-07-05 23:34 ` [PATCH 03/20] Hexagon HVX (target/hexagon) register names Taylor Simpson
2021-07-25 13:10 ` Richard Henderson
2021-07-05 23:34 ` [PATCH 04/20] Hexagon HVX (target/hexagon) support in gdbstub Taylor Simpson
2021-07-05 23:34 ` [PATCH 05/20] Hexagon HVX (target/hexagon) instruction attributes Taylor Simpson
2021-07-05 23:34 ` [PATCH 06/20] Hexagon HVX (target/hexagon) macros Taylor Simpson
2021-07-25 13:13 ` Richard Henderson
2021-07-05 23:34 ` [PATCH 07/20] Hexagon HVX (target/hexagon) import macro definitions Taylor Simpson
2021-07-05 23:34 ` [PATCH 08/20] Hexagon HVX (target/hexagon) semantics generator Taylor Simpson
2021-07-05 23:34 ` [PATCH 09/20] Hexagon HVX (target/hexagon) semantics generator - part 2 Taylor Simpson
2021-07-05 23:34 ` [PATCH 10/20] Hexagon HVX (target/hexagon) C preprocessor for decode tree Taylor Simpson
2021-07-25 13:15 ` Richard Henderson
2021-07-05 23:34 ` [PATCH 11/20] Hexagon HVX (target/hexagon) instruction utility functions Taylor Simpson
2021-07-25 13:21 ` Richard Henderson [this message]
2021-07-05 23:34 ` [PATCH 12/20] Hexagon HVX (target/hexagon) helper functions Taylor Simpson
2021-07-25 13:22 ` Richard Henderson
2021-07-26 4:02 ` Taylor Simpson
2021-07-05 23:34 ` [PATCH 13/20] Hexagon HVX (target/hexagon) TCG generation Taylor Simpson
2021-07-05 23:34 ` [PATCH 14/20] Hexagon HVX (target/hexagon) import semantics Taylor Simpson
2021-07-05 23:34 ` [PATCH 15/20] Hexagon HVX (target/hexagon) instruction decoding Taylor Simpson
2021-07-05 23:34 ` [PATCH 16/20] Hexagon HVX (target/hexagon) import instruction encodings Taylor Simpson
2021-07-05 23:34 ` [PATCH 17/20] Hexagon HVX (tests/tcg/hexagon) vector_add_int test Taylor Simpson
2021-07-05 23:34 ` [PATCH 18/20] Hexagon HVX (tests/tcg/hexagon) hvx_misc test Taylor Simpson
2021-07-05 23:34 ` [PATCH 19/20] Hexagon HVX (tests/tcg/hexagon) scatter_gather test Taylor Simpson
2021-07-05 23:34 ` [PATCH 20/20] Hexagon HVX (tests/tcg/hexagon) histogram test Taylor Simpson
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