From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: f4bug@amsat.org
Subject: [PATCH] tcg: Document ctpop opcodes
Date: Wed, 10 Nov 2021 13:20:15 +0100 [thread overview]
Message-ID: <20211110122015.189655-1-richard.henderson@linaro.org> (raw)
Fixes: a768e4e99247
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/658
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/README | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/tcg/README b/tcg/README
index c2e7762a37..391f4d1e80 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 popultation", matching
+the function name used in include/qemu/host-utils.h.
+
********* Shifts/Rotates
* shl_i32/i64 t0, t1, t2
--
2.25.1
next reply other threads:[~2021-11-10 12:21 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-10 12:20 Richard Henderson [this message]
2021-11-10 12:32 ` [PATCH] tcg: Document ctpop opcodes Philippe Mathieu-Daudé
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