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tcg: Document ctpop opcodes

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Fixes: a768e4e992
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/658
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Richard Henderson 2021-11-10 13:17:31 +01:00
parent f1f727ac8a
commit 8d30f0473e
1 changed files with 6 additions and 0 deletions
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tcg/README
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@ -254,6 +254,12 @@ t0 = t1 ? clz(t1) : t2
t0 = t1 ? ctz(t1) : t2 t0 = t1 ? ctz(t1) : t2
* ctpop_i32/i64 t0, t1
t0 = number of bits set in t1
With "ctpop" short for "count population", matching
the function name used in include/qemu/host-utils.h.
********* Shifts/Rotates ********* Shifts/Rotates
* shl_i32/i64 t0, t1, t2 * shl_i32/i64 t0, t1, t2