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Re: [RFC, patch] implement __builtin_bswap
- From: Paul Brook <paul at codesourcery dot com>
- To: gcc-patches at gcc dot gnu dot org
- Cc: Eric Christopher <echristo at apple dot com>
- Date: Tue, 11 Jul 2006 20:56:07 +0100
- Subject: Re: [RFC, patch] implement __builtin_bswap
- References: <44B30440.2080607@apple.com>
> 2006-07-10 Eric Christopher <echristo@apple.com>
>
> * optabs.c (init_optabs): Add bswap_optab.
> (init_integral_libfuncs): Ditto.
> * optabs.h (optab_index): Add OTI_bswap.
> (bswap_optab): New.
> * genopinit.c (optabs): Add handler for bswap_optab.
> * builtins.c (expand_builtin): Add BUILT_IN_BSWAP.
> * builtins.def (BUILT_IN_BSWAP): New.
> (BUILT_IN_BSWAPL): Ditto.
> (BUILT_IN_BSWAPLL): Ditto.
> * rtl.def: Add bswap.
> * libgcc2.c (bswapSI2): New.
> (bswapDI2): Ditto.
> * libgcc2.h (bswapSI2): Declare.
> (bswapDI2): Ditto.
> * mklibgcc.in (lib2funcs): Add __bswapsi2 and __bswapdi2.
> * libgcc-std.ver (GCC_4.2.0): Add __bswapsi2 and __bswapdi2.
> * config/i386/i386.h (x86_bswap): New.
> (TARGET_BSWAP): Ditto.
> * config/i386/i386.c (x86_bswap): New.
> * config/i386/i386.md (bswapsi2): New.
> (bswapdi2): Ditto.
You need to add user documentation for the buintins to extend.texi, and
internals documentation for for the new RTL operator and standard pattern
names to rtl.texi and md.text.
Paul