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[PULL 3/4] tcg: Document ctpop opcodes
From: |
Richard Henderson |
Subject: |
[PULL 3/4] tcg: Document ctpop opcodes |
Date: |
Thu, 11 Nov 2021 12:06:55 +0100 |
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>
---
tcg/README | 6 ++++++
1 file changed, 6 insertions(+)
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
--
2.25.1