Go patch committed: add escape analysis debugging

[Ian Lance Taylor]

On Thu, Aug 4, 2016 at 6:47 AM, Rainer Orth <ro@cebitec.uni-bielefeld.de> wrote:
>
>> This patch by Chris Manghane adds debugging to the escape analysis
>> code.  This debugging is designed to generate the same sort of output
>> as the gc Go compiler, for easier comparison of results.  Escape
>> analysis is still not enabled by default.  Bootstrapped and ran Go
>> testsuite on x86_64-pc-linux-gnu.  Committed to mainline.
>
> this patch (resp. this particular line)
>
>> Index: gcc/go/gofrontend/escape.cc
>> ===================================================================
>> --- gcc/go/gofrontend/escape.cc       (revision 238653)
>> +++ gcc/go/gofrontend/escape.cc       (working copy)
>> @@ -6,12 +6,14 @@
>>
>>  #include <limits>
>>  #include <stack>
>> +#include <sstream>
>
> broke Solaris bootstrap:
>
>                  from /vol/gcc/src/hg/trunk/local/gcc/go/go-system.h:23,
>                  from /vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/go-linemap.h:10,
>                  from /vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/gogo.h:10,
>                  from /vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/escape.cc:11:
> ./auto-host.h:2214:0: error: "_FILE_OFFSET_BITS" redefined [-Werror]
>  #define _FILE_OFFSET_BITS 64
>
> In file included from /var/gcc/regression/trunk/12-gcc-gas/build/prev-gcc/include-fixed/wchar.h:17:0,
>                  from /var/gcc/regression/trunk/12-gcc-gas/build/prev-i386-pc-solaris2.12/libstdc++-v3/include/cwchar:44,
>                  from /var/gcc/regression/trunk/12-gcc-gas/build/prev-i386-pc-solaris2.12/libstdc++-v3/include/bits/postypes.h:40,
>                  from /var/gcc/regression/trunk/12-gcc-gas/build/prev-i386-pc-solaris2.12/libstdc++-v3/include/iosfwd:40,
>                  from /var/gcc/regression/trunk/12-gcc-gas/build/prev-i386-pc-solaris2.12/libstdc++-v3/include/ios:38,
>                  from /var/gcc/regression/trunk/12-gcc-gas/build/prev-i386-pc-solaris2.12/libstdc++-v3/include/istream:38,
>                  from /var/gcc/regression/trunk/12-gcc-gas/build/prev-i386-pc-solaris2.12/libstdc++-v3/include/sstream:38,
>                  from /vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/escape.cc:9:
> /var/gcc/regression/trunk/12-gcc-gas/build/prev-gcc/include-fixed/sys/feature_tests.h:223:0: note: this is the location of the previous definition
>  #define _FILE_OFFSET_BITS 32
>
> Including anything before "config.h" (or in the case of Go "go-system.h")
> is fragile at best.
>
> The following patch allowed me to compile escape.cc again.

Thanks.  Committed.

Ian