* config/arm/arm.h (TARGET_SWITCHES): Add -m{no-}single-pic-base. Correct help string for -mshort-load-words. (TARGET_OPTIONS): Add -mpic-register=. (ARM_FLAG_SINGLE_PIC_BASE, TARGET_SINGLE_PIC_BASE): Define. (arm_pic_register_string): Declare. (NEED_PLT_GOT): Delete, replace with ... (NEED_GOT_RELOC, NEED_PLT_RELOC): ... these. New macros. (OUTPUT_INT_ADDR_CONST): Replace NEED_PLT_GOT with NEED_GOT_RELOC. (ASM_OUTPUT_MI_THUNK): Replace NEED_PLT_GOT with NEED_PLT_RELOC. * config/arm/arm.c (arm_override_options): Add new option -mpic-register=N. (arm_pic_register_string): New variable. (arm_finalize_pic): Respect TARGET_SINGLE_PIC_BASE. (output_func_prologue): If TARGET_SINGLE_PIC_BASE, treat the PIC register as never live. Use NEED_PLT_RELOC not NEED_PLT_GOT. (output_return_instruction): Likewise. * config/arm/elf.h (NEED_PLT_GOT): Delete, replace with ... (NEED_GOT_RELOC, NEED_PLT_RELOC): ... these. Define to flag_pic. * config/arm/arm.md: Use NEED_PLT_RELOC in place of NEED_PLT_GOT. * invoke.texi (ARM Options): Fix spelling. Remove duplicate mention of -msched-prolog. Document new options -msingle-pic-base and -mpic-register=. From-SVN: r28227
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