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| author | Richard Henderson <richard.henderson@linaro.org> | 2021-11-10 13:17:31 +0100 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-11-11 11:47:01 +0100 |
| commit | 8d30f0473e0beaf135f81984b3af90c23a228dc2 (patch) | |
| tree | 21bb8c674843bfd55e359a9bb3ef8fdd87bf2aa2 /tcg | |
| parent | f1f727ac8a19c9106a4c92a98a3cde4b284fcef5 (diff) | |
tcg: Document ctpop opcodes
Fixes: a768e4e99247
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>
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/README | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tcg/README b/tcg/README index c2e7762a37..bc15cc3b32 100644 --- a/tcg/README +++ b/tcg/README @@ -254,6 +254,12 @@ t0 = t1 ? clz(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 * shl_i32/i64 t0, t1, t2 |