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patches/gcc/4.3.6/340-make-mno-spe-work-as-expected.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Jul 17 22:43:07 2011 +0200 (2011-07-17)
changeset 2893 a8a65758664f
parent 2124 5dd0b83ae528
permissions -rw-r--r--
cc/gcc: do not use the core pass-2 to build the baremetal compiler

In case we build a baremetal compiler, use the standard passes:
- core_cc is used to build the C library;
- as such, it is meant to run on build, not host;
- the final compiler is meant to run on host;

As the current final compiler step can not build a baremetal compiler,
call the core backend from the final step.

NB: Currently, newlib is built during the start_files pass, so we have
to have a core compiler by then... Once we can build the baremetal
compiler from the final cc step, then we can move the newlib build to
the proper step, and then get rid of the core pass-1 static compiler...

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 Original patch from: ../4.3.2/340-make-mno-spe-work-as-expected.patch

     2 

     3 -= BEGIN original header =-

     4 2008-04-03  Nathan Froyd  <froydnj@codesourcery.com>

     5             Nathan Sidwell  <nathan@codesourcery.com>

     6 

     7         * config/rs6000/rs6000.opt (mspe): Remove Var property.

     8         (misel): Likewise.

     9         * config/rs6000/rs6000.h (rs6000_spe): Declare.

    10         (rs6000_isel): Likewise.

    11         * config/rs6000/rs6000.c (rs6000_spe): New variable.

    12         (rs6000_isel): New variable.

    13         (rs6000_handle_option): Handle OPT_mspe and OPT_misel.                                                                                         

    14 

    15 -= END original header =-

    16 

    17 diff -durN gcc-4.3.3.orig/gcc/config/rs6000/rs6000.c gcc-4.3.3/gcc/config/rs6000/rs6000.c

    18 --- gcc-4.3.3.orig/gcc/config/rs6000/rs6000.c	2008-11-18 23:07:58.000000000 +0100

    19 +++ gcc-4.3.3/gcc/config/rs6000/rs6000.c	2009-01-27 22:28:55.000000000 +0100

    20 @@ -174,9 +174,15 @@

    21  /* Nonzero to use AltiVec ABI.  */

    22  int rs6000_altivec_abi;

    23  

    24 +/* Nonzero if we want SPE SIMD instructions.  */

    25 +int rs6000_spe;

    26 +

    27  /* Nonzero if we want SPE ABI extensions.  */

    28  int rs6000_spe_abi;

    29  

    30 +/* Nonzero to use isel instructions.  */

    31 +int rs6000_isel;

    32 +

    33  /* Nonzero if floating point operations are done in the GPRs.  */

    34  int rs6000_float_gprs = 0;

    35  

    36 @@ -2144,11 +2150,21 @@

    37        rs6000_parse_yes_no_option ("vrsave", arg, &(TARGET_ALTIVEC_VRSAVE));

    38        break;

    39  

    40 +    case OPT_misel:

    41 +      rs6000_explicit_options.isel = true;

    42 +      rs6000_isel = value;

    43 +      break;

    44 +

    45      case OPT_misel_:

    46        rs6000_explicit_options.isel = true;

    47        rs6000_parse_yes_no_option ("isel", arg, &(rs6000_isel));

    48        break;

    49  

    50 +    case OPT_mspe:

    51 +      rs6000_explicit_options.spe = true;

    52 +      rs6000_spe = value;

    53 +      break;

    54 +

    55      case OPT_mspe_:

    56        rs6000_explicit_options.spe = true;

    57        rs6000_parse_yes_no_option ("spe", arg, &(rs6000_spe));

    58 diff -durN gcc-4.3.3.orig/gcc/config/rs6000/rs6000.h gcc-4.3.3/gcc/config/rs6000/rs6000.h

    59 --- gcc-4.3.3.orig/gcc/config/rs6000/rs6000.h	2008-01-26 18:18:35.000000000 +0100

    60 +++ gcc-4.3.3/gcc/config/rs6000/rs6000.h	2009-01-27 22:28:55.000000000 +0100

    61 @@ -349,6 +349,8 @@

    62  extern int rs6000_ieeequad;

    63  extern int rs6000_altivec_abi;

    64  extern int rs6000_spe_abi;

    65 +extern int rs6000_spe;

    66 +extern int rs6000_isel;

    67  extern int rs6000_float_gprs;

    68  extern int rs6000_alignment_flags;

    69  extern const char *rs6000_sched_insert_nops_str;

    70 diff -durN gcc-4.3.3.orig/gcc/config/rs6000/rs6000.opt gcc-4.3.3/gcc/config/rs6000/rs6000.opt

    71 --- gcc-4.3.3.orig/gcc/config/rs6000/rs6000.opt	2007-10-31 08:56:01.000000000 +0100

    72 +++ gcc-4.3.3/gcc/config/rs6000/rs6000.opt	2009-01-27 22:28:55.000000000 +0100

    73 @@ -190,7 +190,7 @@

    74  -mvrsave=yes/no	Deprecated option.  Use -mvrsave/-mno-vrsave instead

    75  

    76  misel

    77 -Target Var(rs6000_isel)

    78 +Target

    79  Generate isel instructions

    80  

    81  misel=

    82 @@ -198,7 +198,7 @@

    83  -misel=yes/no	Deprecated option.  Use -misel/-mno-isel instead

    84  

    85  mspe

    86 -Target Var(rs6000_spe)

    87 +Target

    88  Generate SPE SIMD instructions on E500

    89  

    90  mpaired
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