Hello,
The following patch improves addsi3 by eliminating addw ax, #0 and replacing
addw ax, #-1 with decw ax where possible (if operand 2 is const)
The patch adds also a test case to check this.
Regression test is OK, tested with the following command:
make -k check-gcc RUNTESTFLAGS=--target_b
This is OK.
I wonder if these types of optimizations should be added to the
assembler too? At least, if relaxation is enabled...
2018 19:38
> To: Sebastian Perta
> Cc: gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH] RL78 addsi3 improvement
>
>
> This is OK.
>
> I wonder if these types of optimizations should be added to the
> assembler too? At least, if relaxation is enabled...
