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Date: Tue, 08 Nov 2011 08:10:00 -0000
From: Joel Sherrill <joel.sherrill@oarcorp.com>
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Subject: powerpc rs6000_explicit_options change help request
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Hi,

powerpc-rtems does not compile on the head due
to what appear to be changes in the way CPU
features are represented for the arguments.

The compilation error is:

/users/joel/test-gcc/gcc-svn/gcc/config/rs6000/rs6000.c -o rs6000.o
/users/joel/test-gcc/gcc-svn/gcc/config/rs6000/rs6000.c: In function 
‘rs6000_option_override_internal’:
/users/joel/test-gcc/gcc-svn/gcc/config/rs6000/rs6000.c:2826:3: error: 
‘rs6000_explicit_options’ undeclared (first use in this function)
/users/joel/test-gcc/gcc-svn/gcc/config/rs6000/rs6000.c:2826:3: note: 
each undeclared identifier is reported only once for each function it 
appears in
At top level:

The code is in rtems.h is currently:

if (TARGET_E500) \
{ \
if (TARGET_HARD_FLOAT && !rs6000_explicit_options.float_gprs) \
rs6000_float_gprs = 1; \
if (rs6000_float_gprs != 0 && !rs6000_explicit_options.spe) \
rs6000_spe = 1; \
if (rs6000_spe && !rs6000_explicit_options.spe_abi) \
rs6000_spe_abi = 1; \
} \

I think that changes to something like:

if (TARGET_E500) \
{ \
if (!global_options_set.x_rs6000_float_gprs) \
rs6000_float_gprs = 1; \
if (!global_options_set.x_rs6000_spe) \
rs6000_spe = 1; \
if (!global_options_set.x_rs6000_spe_abi) \
rs6000_spe_abi = 1; \
} \

That compiles but I wanted a sanity check that it is the right 
transformation.

Thanks.

--joel sherrill