From: Kelvin Nilsen Date: Fri, 22 Jul 2016 15:13:20 +0000 (+0000) Subject: rs6000.c (rs6000_option_override_internal): Add comments to explain why certain error... X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1610d41097ba3b0f4b0df99ddcadcc46a0b5a549;p=gcc.git rs6000.c (rs6000_option_override_internal): Add comments to explain why certain error messages make mention of undocumented... gcc/ChangeLog: 2016-07-22 Kelvin Nilsen * config/rs6000/rs6000.c (rs6000_option_override_internal): Add comments to explain why certain error messages make mention of undocumented options. (rs6000_invalid_builtin): Change error messages to replace mention of undocumented options with mention of the -mcpu=power9 option that enables those undocumented options. * config/rs6000/rs6000.h (MASK_FLOAT128): New macro. (RS6000_BTM_FLOAT128): Use the new MASK_FLOAT128 macro in the definition of this macro to correct an existing error. * config/rs6000/rs6000.opt: Add the Undocumented qualifier to the mpower9-fusion, mpower9-vector, mpower9-dform, and mmodulo entries. * doc/extend.texi (PowerPC AltiVec Built-in Functions): Modify descriptions of built-in functions so that they depend on -mcpu=power9 instead of on the corresponding undocumented flags. * doc/invoke.texi (Option Summary): Remove all mention of newly undocumented flags. (IBM RS/6000 and PowerPC Options): Likewise. * doc/md.texi (Constraints for Particuliar Machines): Remove all mention of newly undocumented flags. From-SVN: r238648 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 8eb011ccbf3..c7b5ed876ee 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,25 @@ +2016-07-22 Kelvin Nilsen + + * config/rs6000/rs6000.c (rs6000_option_override_internal): Add + comments to explain why certain error messages make mention of + undocumented options. + (rs6000_invalid_builtin): Change error messages to replace mention + of undocumented options with mention of the -mcpu=power9 option + that enables those undocumented options. + * config/rs6000/rs6000.h (MASK_FLOAT128): New macro. + (RS6000_BTM_FLOAT128): Use the new MASK_FLOAT128 macro in the + definition of this macro to correct an existing error. + * config/rs6000/rs6000.opt: Add the Undocumented qualifier to the + mpower9-fusion, mpower9-vector, mpower9-dform, and mmodulo entries. + * doc/extend.texi (PowerPC AltiVec Built-in Functions): Modify + descriptions of built-in functions so that they depend on + -mcpu=power9 instead of on the corresponding undocumented flags. + * doc/invoke.texi (Option Summary): Remove all mention of newly + undocumented flags. + (IBM RS/6000 and PowerPC Options): Likewise. + * doc/md.texi (Constraints for Particuliar Machines): Remove all + mention of newly undocumented flags. + 2016-07-22 Evgeny Stupachenko * ipa-cp.c (determine_versionability): Do not create constprop clones, diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 7d47f45989e..238e8450f8c 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -4212,6 +4212,10 @@ rs6000_option_override_internal (bool global_init_p) { if (rs6000_isa_flags_explicit & OPTION_MASK_P8_FUSION) { + /* We prefer to not mention undocumented options in + error messages. However, if users have managed to select + power9-fusion without selecting power8-fusion, they + already know about undocumented flags. */ error ("-mpower9-fusion requires -mpower8-fusion"); rs6000_isa_flags &= ~OPTION_MASK_P9_FUSION; } @@ -4259,6 +4263,10 @@ rs6000_option_override_internal (bool global_init_p) /* ISA 3.0 vector instructions include ISA 2.07. */ if (TARGET_P9_VECTOR && !TARGET_P8_VECTOR) { + /* We prefer to not mention undocumented options in + error messages. However, if users have managed to select + power9-vector without selecting power8-vector, they + already know about undocumented flags. */ if (rs6000_isa_flags_explicit & OPTION_MASK_P8_VECTOR) error ("-mpower9-vector requires -mpower8-vector"); rs6000_isa_flags &= ~OPTION_MASK_P9_VECTOR; @@ -4286,6 +4294,10 @@ rs6000_option_override_internal (bool global_init_p) /* ISA 3.0 D-form instructions require p9-vector and upper-regs. */ if ((TARGET_P9_DFORM_SCALAR || TARGET_P9_DFORM_VECTOR) && !TARGET_P9_VECTOR) { + /* We prefer to not mention undocumented options in + error messages. However, if users have managed to select + power9-dform without selecting power9-vector, they + already know about undocumented flags. */ if (rs6000_isa_flags_explicit & OPTION_MASK_P9_VECTOR) error ("-mpower9-dform requires -mpower9-vector"); rs6000_isa_flags &= ~(OPTION_MASK_P9_DFORM_SCALAR @@ -4294,6 +4306,10 @@ rs6000_option_override_internal (bool global_init_p) if (TARGET_P9_DFORM_SCALAR && !TARGET_UPPER_REGS_DF) { + /* We prefer to not mention undocumented options in + error messages. However, if users have managed to select + power9-dform without selecting upper-regs-df, they + already know about undocumented flags. */ if (rs6000_isa_flags_explicit & OPTION_MASK_UPPER_REGS_DF) error ("-mpower9-dform requires -mupper-regs-df"); rs6000_isa_flags &= ~OPTION_MASK_P9_DFORM_SCALAR; @@ -15507,13 +15523,13 @@ rs6000_invalid_builtin (enum rs6000_builtins fncode) else if ((fnmask & RS6000_BTM_P8_VECTOR) != 0) error ("Builtin function %s requires the -mpower8-vector option", name); else if ((fnmask & RS6000_BTM_P9_VECTOR) != 0) - error ("Builtin function %s requires the -mpower9-vector option", name); + error ("Builtin function %s requires the -mcpu=power9 option", name); else if ((fnmask & (RS6000_BTM_P9_MISC | RS6000_BTM_64BIT)) == (RS6000_BTM_P9_MISC | RS6000_BTM_64BIT)) - error ("Builtin function %s requires the -mpower9-misc and" + error ("Builtin function %s requires the -mcpu=power9 and" " -m64 options", name); else if ((fnmask & RS6000_BTM_P9_MISC) == RS6000_BTM_P9_MISC) - error ("Builtin function %s requires the -mpower9-misc option", name); + error ("Builtin function %s requires the -mcpu=power9 option", name); else if ((fnmask & (RS6000_BTM_HARD_FLOAT | RS6000_BTM_LDBL128)) == (RS6000_BTM_HARD_FLOAT | RS6000_BTM_LDBL128)) error ("Builtin function %s requires the -mhard-float and" diff --git a/gcc/config/rs6000/rs6000.h b/gcc/config/rs6000/rs6000.h index a6e80d7c897..a2b16d9c73b 100644 --- a/gcc/config/rs6000/rs6000.h +++ b/gcc/config/rs6000/rs6000.h @@ -638,6 +638,7 @@ extern int rs6000_vector_align[]; #define MASK_DIRECT_MOVE OPTION_MASK_DIRECT_MOVE #define MASK_DLMZB OPTION_MASK_DLMZB #define MASK_EABI OPTION_MASK_EABI +#define MASK_FLOAT128 OPTION_MASK_FLOAT128 #define MASK_FPRND OPTION_MASK_FPRND #define MASK_P8_FUSION OPTION_MASK_P8_FUSION #define MASK_HARD_FLOAT OPTION_MASK_HARD_FLOAT @@ -2716,7 +2717,7 @@ extern int frame_pointer_needed; #define RS6000_BTM_HARD_FLOAT MASK_SOFT_FLOAT /* Hardware floating point. */ #define RS6000_BTM_LDBL128 MASK_MULTIPLE /* 128-bit long double. */ #define RS6000_BTM_64BIT MASK_64BIT /* 64-bit addressing. */ -#define RS6000_BTM_FLOAT128 MASK_P9_VECTOR /* IEEE 128-bit float. */ +#define RS6000_BTM_FLOAT128 MASK_FLOAT128 /* IEEE 128-bit float. */ #define RS6000_BTM_COMMON (RS6000_BTM_ALTIVEC \ | RS6000_BTM_VSX \ diff --git a/gcc/config/rs6000/rs6000.opt b/gcc/config/rs6000/rs6000.opt index 4f67473c7d6..a6db8bbfecc 100644 --- a/gcc/config/rs6000/rs6000.opt +++ b/gcc/config/rs6000/rs6000.opt @@ -606,7 +606,7 @@ Target Undocumented Var(rs6000_optimize_swaps) Init(1) Save Analyze and remove doubleword swaps from VSX computations. mpower9-fusion -Target Report Mask(P9_FUSION) Var(rs6000_isa_flags) +Target Undocumented Report Mask(P9_FUSION) Var(rs6000_isa_flags) Fuse certain operations together for better performance on power9. mpower9-misc @@ -614,7 +614,7 @@ Target Undocumented Report Mask(P9_MISC) Var(rs6000_isa_flags) Use/do not use certain scalar instructions added in ISA 3.0. mpower9-vector -Target Report Mask(P9_VECTOR) Var(rs6000_isa_flags) +Target Undocumented Report Mask(P9_VECTOR) Var(rs6000_isa_flags) Use/do not use vector instructions added in ISA 3.0. mpower9-dform-scalar @@ -626,7 +626,7 @@ Target Undocumented Mask(P9_DFORM_VECTOR) Var(rs6000_isa_flags) Use/do not use vector register+offset memory instructions added in ISA 3.0. mpower9-dform -Target Report Var(TARGET_P9_DFORM_BOTH) Init(-1) Save +Target Undocumented Report Var(TARGET_P9_DFORM_BOTH) Init(-1) Save Use/do not use register+offset memory instructions added in ISA 3.0. mpower9-minmax @@ -638,7 +638,7 @@ Target Undocumented Mask(TOC_FUSION) Var(rs6000_isa_flags) Fuse medium/large code model toc references with the memory instruction. mmodulo -Target Report Mask(MODULO) Var(rs6000_isa_flags) +Target Undocumented Report Mask(MODULO) Var(rs6000_isa_flags) Generate the integer modulo instructions. mfloat128 diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index 8a21c5b251b..c5e7a0d5328 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -17523,8 +17523,8 @@ int __builtin_bcdsub_gt (vector __int128_t, vector__int128_t); int __builtin_bcdsub_ov (vector __int128_t, vector__int128_t); @end smallexample -If the ISA 3.0 additions to the vector/scalar (power9-vector) -instruction set are available: +If the ISA 3.0 instruction set additions (@option{-mcpu=power9}) +are available: @smallexample vector long long vec_vctz (vector long long); @@ -17560,9 +17560,8 @@ vector long long vec_vprtybd (vector long long); vector unsigned long long vec_vprtybd (vector unsigned long long); @end smallexample - -If the ISA 3.0 additions to the vector/scalar (power9-vector) -instruction set are available for 64-bit targets: +On 64-bit targets, if the ISA 3.0 additions (@option{-mcpu=power9}) +are available: @smallexample vector long vec_vprtyb (vector long); @@ -17578,8 +17577,7 @@ vector __uint128_t vec_vprtybd (vector __uint128_t); @end smallexample The following built-in vector functions are available for the PowerPC family -of processors, starting with ISA 3.0 or later (@option{-mcpu=power9}) -or with @option{-mpower9-vector}: +of processors, starting with ISA 3.0 or later (@option{-mcpu=power9}): @smallexample __vector unsigned char vec_slv (__vector unsigned char src, __vector unsigned char shift_distance); @@ -17612,8 +17610,7 @@ result returned from the @code{vec_srv} function is a with this resulting value coerced to the @code{unsigned char} type. The following built-in functions are available for the PowerPC family -of processors, starting with ISA 3.0 or later (@option{-mcpu=power9}) -or with @option{-mpower9-vector}: +of processors, starting with ISA 3.0 or later (@option{-mcpu=power9}): @smallexample __vector unsigned char vec_absd (__vector unsigned char arg1, __vector unsigned char arg2); @@ -17696,9 +17693,9 @@ The second argument to the @var{__builtin_crypto_vshasigmad} and integer that is 0 or 1. The third argument to these builtin functions must be a constant integer in the range of 0 to 15. -If the ISA 3.0 additions to the vector/scalar (power9-vector) -instruction set are available, the following additional functions are -available for both 32-bit and 64-bit targets. +If the ISA 3.0 instruction set additions +are enabled (@option{-mcpu=power9}), the following additional +functions are available for both 32-bit and 64-bit targets. vector short vec_xl (int, vector short *); vector short vec_xl (int, short *); diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index c9e8e1d7157..9e0f07eb542 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -1011,10 +1011,9 @@ See RS/6000 and PowerPC Options. -mcompat-align-parm -mno-compat-align-parm @gol -mupper-regs-df -mno-upper-regs-df -mupper-regs-sf -mno-upper-regs-sf @gol -mupper-regs-di -mno-upper-regs-di @gol --mupper-regs -mno-upper-regs -mmodulo -mno-modulo @gol +-mupper-regs -mno-upper-regs @gol -mfloat128 -mno-float128 -mfloat128-hardware -mno-float128-hardware @gol --mpower9-fusion -mno-mpower9-fusion -mpower9-vector -mno-power9-vector @gol --mpower9-dform -mno-power9-dform -mlra -mno-lra} +-mlra -mno-lra} @emph{RX Options} @gccoptlist{-m64bit-doubles -m32bit-doubles -fpu -nofpu@gol @@ -20116,8 +20115,7 @@ following options: -mpowerpc-gpopt -mpowerpc-gfxopt -msingle-float -mdouble-float @gol -msimple-fpu -mstring -mmulhw -mdlmzb -mmfpgpr -mvsx @gol -mcrypto -mdirect-move -mhtm -mpower8-fusion -mpower8-vector @gol --mquad-memory -mquad-memory-atomic -mmodulo -mfloat128 -mfloat128-hardware @gol --mpower9-fusion -mpower9-vector -mpower9-dform} +-mquad-memory -mquad-memory-atomic -mfloat128 -mfloat128-hardware} The particular options set for any particular CPU varies between compiler versions, depending on what setting seems to produce optimal @@ -20361,7 +20359,7 @@ instructions that target all 64 registers in the vector/scalar floating point register set that were added in version 2.07 of the PowerPC ISA. @option{-mupper-regs-sf} is turned on by default if you use either of the @option{-mcpu=power8}, @option{-mpower8-vector}, or -@option{-mpower9} options. +@option{-mcpu=power9} options. @item -mupper-regs @itemx -mno-upper-regs @@ -20406,40 +20404,6 @@ If you select ISA 3.0 instructions with @option{-mcpu=power9}, but do not use either @option{-mfloat128} or @option{-mfloat128-hardware}, the IEEE 128-bit floating point support will not be enabled. -@item -mmodulo -@itemx -mno-modulo -@opindex mmodulo -@opindex mno-module -Generate code that uses (does not use) the ISA 3.0 integer modulo -instructions. The @option{-mmodulo} option is enabled by default -with the @option{-mcpu=power9} option. - -@item -mpower9-fusion -@itemx -mno-power9-fusion -@opindex mpower9-fusion -@opindex mno-power9-fusion -Generate code that keeps (does not keeps) some operations adjacent so -that the instructions can be fused together on power9 and later -processors. - -@item -mpower9-vector -@itemx -mno-power9-vector -@opindex mpower9-vector -@opindex mno-power9-vector -Generate code that uses (does not use) the vector and scalar -instructions that were added in version 3.0 of the PowerPC ISA. Also -enable the use of built-in functions that allow more direct access to -the vector instructions. - -@item -mpower9-dform -@itemx -mno-power9-dform -@opindex mpower9-dform -@opindex mno-power9-dform -Enable (disable) scalar d-form (register + offset) memory instructions -to load/store traditional Altivec registers. If the @var{LRA} register -allocator is enabled, also enable (disable) vector d-form memory -instructions. - @item -mfloat-gprs=@var{yes/single/double/no} @itemx -mfloat-gprs @opindex mfloat-gprs diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi index 88862e6f1a0..996b1649251 100644 --- a/gcc/doc/md.texi +++ b/gcc/doc/md.texi @@ -3038,13 +3038,13 @@ asm ("xsaddqp %x0,%x1,%x2" : "=v" (v1) : "v" (v2), "v" (v3)); is incorrect. @item wb -Altivec register if @option{-mpower9-dform} is used or NO_REGS. +Altivec register if @option{-mcpu=power9} is used or NO_REGS. @item wd VSX vector register to hold vector double data or NO_REGS. @item we -VSX register if the @option{-mpower9-vector} and @option{-m64} options +VSX register if the @option{-mcpu=power9} and @option{-m64} options were used or NO_REGS. @item wf