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Re: [PATCH, take 2] implement drem() and fmod() as built-in x87intrinsic

On Wed, 5 May 2004, Uros Bizjak wrote:
> 2004-05-05  Uros Bizjak  <>
>     * optabs.h (enum optab_index): Add new OTI_fmod and OTI_drem.
>     (fmod_optab): Define corresponding macros.
>     * optabs.c (init_optabs): Initialize fmod_optab and drem_optab.
>     * genopinit.c (optabs): Implement fmod_optab and drem_optab
>     using fmod?f3 and drem?f3 patterns.
>     * builtins.c (expand_builtin_mathfn_2): Handle BUILT_IN_FMOD{,F,L}
>     using fmod_optab and BUILT_IN_DREM{,F,L} using drem_optab.
>     (expand_builtin): Expand BUILT_IN_FMOD{,F,L} and
>     BUILT_IN_DREM{,F,L} using expand_builtin_mathfn_2 if
>     flag_unsafe_math_optimizations is set.
>     * reg-stack.c (subst_stack_regs_pat): Handle UNSPEC_FPREM_F,
>     * config/i386/i386.c (ix86_emit_fp_unordered_jump): New function.
>     * config/i386/i386-protos.h (ix86_emit_fp_unordered_jump):
>     Prototype here.
>     * config/i386/ (UNSPEC_FPREM_F, UNSPEC_FPREM_U,
>     UNSPEC_FPREM1_F, UNSPEC_FPREM1_U): New unspecs to represent x87's
>     fprem and fprem1 instructions.
>     (*x86_fnstsw_1): Change input parameter to (reg:CCFP 18).
>     Rename insn definition to x86_fnstsw_1.
>     (fpremxf4, fprem1xf4): New patterns to implement fprem and fprem1
>     x87 instructions.
>     (fmodsf3, fmoddf3, fmodxf3): New expanders to implement fmodf, fmod
>     and fmodl built-ins as inline x87 intrinsics.
>     (dremsf3, dremdf3, dremxf3): New expanders to implement dremf, drem
>     and dreml built-ins as inline x87 intrinsics.
> testsuite:
>     * testsuite/gcc.dg/builtins-40.c: New test.

This is OK for mainline.  Thanks.


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