a6ab9fc087
PR target/14798: gcc: * sh.c (pragma_interrupt, trap_exit, sp_switch): Remove variable. (pragma_trap, pragma_nosave_low_regs): Likewise. (current_function_anonymous_args): Likewise. (sh_deferred_function_attributes): New variable. (sh_deferred_function_attributes_tail): Likewise. (print_operand): For '@', look up trap_exit attribute. (calc_live_regs): Look up trapa_handler attribute. For trapa handlers, save/restore fpscr, but don't do any other interrupt-specific saves. Don't save r0..r7 if the nosave_low_regs attribute is in effect. Fix check for partially saved registers to check for SHmedia. (sh_expand_prologue, sh_expand_epilogue): Look up sp_switch attribute. (sh_output_function_epilogue): Don't clear any of the removed variables. (sh_insert_attributes): Don't check pragma_interrupt. Insert deferred attributes. Check that interrupt attribute is present for other attributes that require its presence. (sh_attribute_table): Add new attributes trapa_handler and nosave_low_regs. (sh_handle_sp_switch_attribute, sh_handle_trap_exit_attribute): Don't check for pragma_interrupt. Don't store argument. * sh.h (pragma_interrupt, sp_switch): Don't declare. (sh_deferred_function_attributes): Declare. (sh_deferred_function_attributes_tail): Likewise. * sh.md (sp_switch_1): Add operand. Change generator caller. (sh_pr_interrupt, sh_pr_trapa, sh_pr_nosave_low_regs): Remove. (*return_i): Don't use when trap_exit attribute is in effect. (*return_trapa): New insn pattern. * sh-c.c: New file. * config.gcc (sh[123456ble]*-* | sh-*-*): New trailer stanza, setting c_target_objs and cxx_target_objs. * t-sh: Add rule for sh-c.o. gcc/testsuite: * gcc.dg/pragma-isr.c: Added target sh[1234ble]*-*-*. * gcc.dg/pragma-isr2.c, gcc.dg/pragma-isr-trapa.c: New tests. * gcc.dg/pragma-isr-trapa2.c: Likewise. * gcc.dg/pragma-isr-nosave_low_regs.c: Likewise. * gcc.dg/pragma-isr-trap_exit.c: Likewise. * gcc.dg/attr-isr.c, gcc.dg/attr-isr-trapa.c: Likewise. * gcc.dg/attr-isr-trap_exit.c: Likewise. * gcc.dg/attr-isr-nosave_low_regs.c: Likewise. From-SVN: r110398
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