From ee9631816531f0ef9005558cec7d10ea5ee6a074 Mon Sep 17 00:00:00 2001 From: Richard Guenther Date: Tue, 31 Jan 2006 15:34:52 +0000 Subject: invoke.texi (-msselibm): Document. 2006-01-31 Richard Guenther * doc/invoke.texi (-msselibm): Document. * target.h (expand_library_builtin): New target hook. * builtins.c (expand_builtin): Use expand_library_builtin. (default_expand_library_builtin): New function. * gcc.c (LINK_GCC_MATH_SPEC): Define. (LINK_COMMAND_SPEC): Handle %(link_gcc_math). (link_gcc_math_spec): Declare. (static_specs): Add link_gcc_math_spec. * expr.h (default_expand_library_builtin): Declare. * target-def.h (TARGET_EXPAND_LIBRARY_BUILTIN): Define. (TARGET_INITIALIZER): Add TARGET_EXPAND_LIBRARY_BUILTIN. * config/i386/i386.h: Provide LINK_GCC_MATH_SPEC. * config/i386/i386.opt (msselibm): New target option. * config/i386/i386.c (ix86_builtin_function_variants): New array. (ix86_init_sse_abi_builtins): New function. (ix86_expand_library_builtin): Likewise. (TARGET_EXPAND_LIBRARY_BUILTIN): Define. (override_options): Handle error conditions wrt -msselibm. (ix86_builtins): Add function codes for SSE2 ABI builtins. (ix86_init_builtins): Call ix86_init_sse_abi_builtins. * doc/extend.texi (__builtin_sse2_*): Document new target specific builtins. * gcc.target/i386/sselibm-1.c: New testcase. * gcc.target/i386/sselibm-2.c: Likewise. * gcc.target/i386/sselibm-3.c: Likewise. * gcc.target/i386/sselibm-4.c: Likewise. * gcc.target/i386/sselibm-5.c: Likewise. From-SVN: r110439 --- gcc/doc/extend.texi | 29 +++++++++++++++++++++++++++++ gcc/doc/invoke.texi | 8 +++++++- 2 files changed, 36 insertions(+), 1 deletion(-) (limited to 'gcc/doc') diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index 9d5a8f6..a20349d 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -6804,6 +6804,35 @@ v2sf __builtin_ia32_pswapdsf (v2sf) v2si __builtin_ia32_pswapdsi (v2si) @end smallexample +The following built-in functions are available when @option{-msse2} +is used. All of them generate calls to an SSE2 ABI IEEE754 math intrinsic +that is part of the name. Rather than using these directly you may +want them automatically substituted for calls to the regular intrinsics +using the @option{-msselibm}. + +@smallexample +double __builtin_sse2_acos (double) +float __builtin_sse2_acosf (float) +double __builtin_sse2_asin (double) +float __builtin_sse2_asinf (float) +double __builtin_sse2_atan (double) +float __builtin_sse2_atanf (float) +double __builtin_sse2_atan2 (double, double) +float __builtin_sse2_atan2f (float, float) +double __builtin_sse2_cos (double) +float __builtin_sse2_cosf (float) +double __builtin_sse2_exp (double) +float __builtin_sse2_expf (float) +double __builtin_sse2_log10 (double) +float __builtin_sse2_log10f (float) +double __builtin_sse2_log (double) +float __builtin_sse2_logf (float) +double __builtin_sse2_sin (double) +float __builtin_sse2_sinf (float) +double __builtin_sse2_tan (double) +float __builtin_sse2_tanf (float) +@end smallexample + @node MIPS DSP Built-in Functions @subsection MIPS DSP Built-in Functions diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index d8f69e8..8edff2a 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -528,7 +528,7 @@ Objective-C and Objective-C++ Dialects}. -mno-fp-ret-in-387 -msoft-float -msvr3-shlib @gol -mno-wide-multiply -mrtd -malign-double @gol -mpreferred-stack-boundary=@var{num} @gol --mmmx -msse -msse2 -msse3 -m3dnow @gol +-mmmx -msse -msse2 -msse3 -m3dnow -msselibm @gol -mthreads -mno-align-stringops -minline-all-stringops @gol -mpush-args -maccumulate-outgoing-args -m128bit-long-double @gol -m96bit-long-double -mregparm=@var{num} -msseregparm @gol @@ -9437,6 +9437,12 @@ supported architecture, using the appropriate flags. In particular, the file containing the CPU detection code should be compiled without these options. +@item -msselibm +@opindex msselibm +Use special versions of certain libm routines that come with an SSE +ABI and an SSE implementation. Useful together with @option{-mfpmath=sse} +to avoid moving values between SSE registers and the x87 FP stack. + @item -mpush-args @itemx -mno-push-args @opindex mpush-args -- cgit v1.1