From: Philippe Mathieu-Daudé <philmd@linaro.org>
Date: Wed, 23 Aug 2023 14:55:39 +0000 (+0200)
Subject: tcg/tcg-op: Document bswap64_i64() byte pattern
X-Git-Tag: pull-xenfv-stable-20231106~124^2~5
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=95180e750b16ab21556b1073c3051a848911093a;p=users%2Fdwmw2%2Fqemu.git

tcg/tcg-op: Document bswap64_i64() byte pattern

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230823145542.79633-6-philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---

diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c
index b56ae748b8..22c682c28e 100644
--- a/tcg/tcg-op.c
+++ b/tcg/tcg-op.c
@@ -1871,6 +1871,11 @@ void tcg_gen_bswap32_i64(TCGv_i64 ret, TCGv_i64 arg, int flags)
     }
 }
 
+/*
+ * bswap64_i64: 64-bit byte swap on a 64-bit value.
+ *
+ * Byte pattern: abcdefgh -> hgfedcba
+ */
 void tcg_gen_bswap64_i64(TCGv_i64 ret, TCGv_i64 arg)
 {
     if (TCG_TARGET_REG_BITS == 32) {