rs6000.c (rs6000_override_options): Set real_format_for_mode for IBM extended format...

rs6000.c (rs6000_override_options): Set real_format_for_mode for IBM extended format, if enabled.

        * config/rs6000/rs6000.c (rs6000_override_options): Set
        real_format_for_mode for IBM extended format, if enabled.
        (easy_fp_constant): Add TFmode.
        (rs6000_legitimize_address): Add TFmode.
        (rs6000_legitimate_address): Same.
        (function_arg_advance): TFmode uses two FPRs.
        (rs6000_emit_prologue): Fix warning.
        (rs6000_output_function_epilogue): Add TFmode.
        (output_toc): Add TFmode.
        * rs6000.h (SLOW_UNALIGNED_ACCESS): Add TFmode.
        (LEGITIMATE_OFFSET_ADDRESS_P): Add TFmode.
        * rs6000.md (movtf splitter): Load TFmode constant.

From-SVN: r57904