| Message ID | 20230822162847.71206-1-philmd@linaro.org |
|---|---|
| State | Accepted |
| Commit | bb9d7ee83e7279d71dae5dfba4d149abbf2c3b59 |
| Headers | show |
| Series | docs/devel/tcg-ops: Bury mentions of trunc_shr_i64_i32() | expand |
On 8/22/23 09:28, Philippe Mathieu-Daudé wrote: > 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<philmd@linaro.org> > --- > docs/devel/tcg-ops.rst | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) Reviewed-by: Richard Henderson <richard.henderson@linaro.org> r~
On 8/22/23 10:08, Richard Henderson wrote: > On 8/22/23 09:28, Philippe Mathieu-Daudé wrote: >> 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<philmd@linaro.org> >> --- >> docs/devel/tcg-ops.rst | 7 ++++--- >> 1 file changed, 4 insertions(+), 3 deletions(-) > > Reviewed-by: Richard Henderson <richard.henderson@linaro.org> > > r~ Queued to tcg-next. r~
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
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 <philmd@linaro.org> --- docs/devel/tcg-ops.rst | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)