From bb9d7ee83e7279d71dae5dfba4d149abbf2c3b59 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Tue, 22 Aug 2023 18:28:47 +0200 Subject: [PATCH] docs/devel/tcg-ops: Bury mentions of trunc_shr_i64_i32() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Commit 609ad70562 ("tcg: Split trunc_shr_i32 opcode into extr[lh]_i64_i32") remove trunc_shr_i64_i32(). Update the backend documentation. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-Id: <20230822162847.71206-1-philmd@linaro.org> Signed-off-by: Richard Henderson --- docs/devel/tcg-ops.rst | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/docs/devel/tcg-ops.rst b/docs/devel/tcg-ops.rst index 6a166c5665..53695e1623 100644 --- a/docs/devel/tcg-ops.rst +++ b/docs/devel/tcg-ops.rst @@ -882,14 +882,15 @@ sub2_i32, brcond2_i32). On a 64 bit target, the values are transferred between 32 and 64-bit registers using the following ops: -- trunc_shr_i64_i32 +- extrl_i64_i32 +- extrh_i64_i32 - ext_i32_i64 - extu_i32_i64 They ensure that the values are correctly truncated or extended when moved from a 32-bit to a 64-bit register or vice-versa. Note that the -trunc_shr_i64_i32 is an optional op. It is not necessary to implement -it if all the following conditions are met: +extrl_i64_i32 and extrh_i64_i32 are optional ops. It is not necessary +to implement them if all the following conditions are met: - 64-bit registers can hold 32-bit values - 32-bit values in a 64-bit register do not need to stay zero or