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Re: [PATCH][ARM] optimizing _muldi3 for Thumb
ping
2008/7/1 Doug Kwan (Ãö®¶¼w) <dougkwan@google.com>:
> Hi
>
> This patch adds an ARM assembly implementation for _muldi3. In
> current gcc, thumb code calls the generic version in libgcc2.c and
> generated code from C is not efficient. The thumb version is 53
> instructions long. The patch implements _muldi3 in just 6 ARM
> instructions.
>
> This has been tested in arm-none-eabi.
>
> -Doug
>
> 2008-07-01 Doug Kwan <dougkwan@google.com>
>
> * config/arm/lib1funcs.asm (muldi3): New.
> * config/arm/t-strongarm-elf (LIB1ASFUNCS): Add _muldi3.
> * config/arm/t-vxworks: Same.
> * config/arm/t-pe: Same.
> * config/arm/t-arm-elf: Same.
> * config/arm/t-arm-coff: Same.
> * config/arm/t-linux: Same.
> * config/arm/t-symbian: Same.
> * config/arm/t-wince-pe: Same.
>