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Emit MMIX function prologue and epilogue as rtl.
* config/mmix/mmix.md ("call"): Use mmix_get_hard_reg_initial_val,
not unprototyped get_hard_reg_initial_val.
("call_value", "nonlocal_goto_receiver"): Ditto.
("return"): Make define_expand. Move real insn to...
("*expanded_return"): New pattern.
("prologue", "epilogue"): New define_expands.
* config/mmix/mmix.h (MMIX_rO_REGNUM): New macro.
(struct machine_function): New member in_prologue.
(FIRST_PSEUDO_REGISTER): Adjust for including rO as register.
(FIXED_REGISTERS, CALL_USED_REGISTERS): Ditto.
(MMIX_MMIXWARE_ABI_REG_ALLOC_ORDER): Ditto.
(MMIX_GNU_ABI_REG_ALLOC_ORDER, REG_CLASS_CONTENTS): Ditto.
(REGISTER_NAMES, ADDITIONAL_REGISTER_NAMES): Ditto.
(LOCAL_REGNO): Define. Adjust comment.
* config/mmix/mmix.c (MMIX_CFUN_NEEDS_SAVED_EH_RETURN_ADDRESS):
Consider regs_ever_live[MMIX_rJ_REGNUM], not just
leaf_function_p.
(MMIX_OUTPUT_REGNO): Don't translate registers while outputting
the prologue.
(mmix_target_asm_function_prologue): Make static. Just mark that
the prologue is being emitted. Move guts to...
(mmix_expand_prologue): New function. Adjust for emitting
prologue as rtl. For sizes, use HOST_WIDE_INT only.
(mmix_target_asm_function_epilogue): Make static. Simply emit a
\n. Move guts to...
(mmix_expand_epilogue): New function. Adjust for emitting
epilogue as rtl. For sizes, use HOST_WIDE_INT only.
(mmix_target_asm_function_end_prologue): Mark that the prologue
has ended.
(TARGET_ASM_FUNCTION_END_PROLOGUE): Define.
(mmix_conditional_register_usage): Improve comments.
(mmix_local_regno): New function.
(mmix_emit_sp_add, mmix_get_hard_reg_initial_val): Ditto.
* config/mmix/mmix-protos.h (mmix_local_regno): Prototype.
(mmix_expand_prologue, mmix_expand_epilogue): Ditto.
(mmix_get_hard_reg_initial_val): Ditto.
From-SVN: r55302
This commit is contained in:
Hans-Peter Nilsson
Hans-Peter Nilsson
parent
276e31ec6e
commit
957ec0f922
@ -1,3 +1,43 @@
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2002-07-07 Hans-Peter Nilsson <hp@bitrange.com>
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Emit MMIX function prologue and epilogue as rtl.
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* config/mmix/mmix.md ("call"): Use mmix_get_hard_reg_initial_val,
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not unprototyped get_hard_reg_initial_val.
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("call_value", "nonlocal_goto_receiver"): Ditto.
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("return"): Make define_expand. Move real insn to...
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("*expanded_return"): New pattern.
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("prologue", "epilogue"): New define_expands.
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* config/mmix/mmix.h (MMIX_rO_REGNUM): New macro.
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(struct machine_function): New member in_prologue.
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(FIRST_PSEUDO_REGISTER): Adjust for including rO as register.
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(FIXED_REGISTERS, CALL_USED_REGISTERS): Ditto.
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(MMIX_MMIXWARE_ABI_REG_ALLOC_ORDER): Ditto.
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(MMIX_GNU_ABI_REG_ALLOC_ORDER, REG_CLASS_CONTENTS): Ditto.
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(REGISTER_NAMES, ADDITIONAL_REGISTER_NAMES): Ditto.
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(LOCAL_REGNO): Define. Adjust comment.
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* config/mmix/mmix.c (MMIX_CFUN_NEEDS_SAVED_EH_RETURN_ADDRESS):
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Consider regs_ever_live[MMIX_rJ_REGNUM], not just
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leaf_function_p.
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(MMIX_OUTPUT_REGNO): Don't translate registers while outputting
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the prologue.
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(mmix_target_asm_function_prologue): Make static. Just mark that
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the prologue is being emitted. Move guts to...
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(mmix_expand_prologue): New function. Adjust for emitting
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prologue as rtl. For sizes, use HOST_WIDE_INT only.
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(mmix_target_asm_function_epilogue): Make static. Simply emit a
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\n. Move guts to...
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(mmix_expand_epilogue): New function. Adjust for emitting
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epilogue as rtl. For sizes, use HOST_WIDE_INT only.
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(mmix_target_asm_function_end_prologue): Mark that the prologue
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has ended.
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(TARGET_ASM_FUNCTION_END_PROLOGUE): Define.
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(mmix_conditional_register_usage): Improve comments.
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(mmix_local_regno): New function.
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(mmix_emit_sp_add, mmix_get_hard_reg_initial_val): Ditto.
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* config/mmix/mmix-protos.h (mmix_local_regno): Prototype.
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(mmix_expand_prologue, mmix_expand_epilogue): Ditto.
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(mmix_get_hard_reg_initial_val): Ditto.
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2002-07-06 Andreas Jaeger <aj@suse.de>
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* toplev.c (set_fast_math_flags): Don't use ISO C style function
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@ -57,6 +57,7 @@ extern int mmix_shiftable_wyde_value PARAMS ((unsigned HOST_WIDEST_INT));
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extern void mmix_output_register_setting
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PARAMS ((FILE *, int, HOST_WIDEST_INT, int));
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extern void mmix_conditional_register_usage PARAMS ((void));
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extern int mmix_local_regno PARAMS ((int));
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extern int mmix_dbx_register_number PARAMS ((int));
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/* Things that need rtl.h, tree.h or real.h included, or in combination. */
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@ -123,6 +124,9 @@ extern void mmix_print_operand_address PARAMS ((FILE *, rtx));
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extern int mmix_valid_comparison PARAMS ((RTX_CODE, enum machine_mode, rtx));
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extern rtx mmix_gen_compare_reg PARAMS ((enum rtx_code, rtx, rtx));
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extern void mmix_machine_dependent_reorg PARAMS ((rtx));
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extern void mmix_expand_prologue PARAMS ((void));
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extern void mmix_expand_epilogue PARAMS ((void));
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extern rtx mmix_get_hard_reg_initial_val PARAMS ((enum machine_mode, int));
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#endif /* RTX_CODE */
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extern int mmix_asm_preferred_eh_data_format PARAMS ((int, int));
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File diff suppressed because it is too large
Load Diff
@ -49,6 +49,7 @@ Boston, MA 02111-1307, USA. */
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#define MMIX_HIMULT_REGNUM 258
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#define MMIX_REMAINDER_REGNUM 260
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#define MMIX_ARG_POINTER_REGNUM 261
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#define MMIX_rO_REGNUM 262
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#define MMIX_LAST_STACK_REGISTER_REGNUM 31
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/* Four registers; "ideally, these registers should be call-clobbered", so
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@ -92,6 +93,7 @@ struct machine_function GTY(())
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{
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int has_landing_pad;
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int highest_saved_stack_register;
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int in_prologue;
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};
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/* For these target macros, there is no generic documentation here. You
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@ -360,13 +362,13 @@ extern int target_flags;
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/* Node: Register Basics */
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/* We tell GCC about all 256 general registers, and we also include
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rD, rE, rH, rJ and rR (in that order) so we can describe what insns
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rD, rE, rH, rJ, rR and rO (in that order) so we can describe what insns
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clobber them. We use a faked register for the argument pointer. It is
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always eliminated towards the frame-pointer or the stack-pointer, never
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output in assembly. Any fixed register would do for this, like $255,
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but future debugging is easier when using a separate register. It
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counts as a global register for pseudorandom reasons. */
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#define FIRST_PSEUDO_REGISTER 262
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#define FIRST_PSEUDO_REGISTER 263
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/* We treat general registers with no assigned purpose as fixed. The
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stack pointer, $254, is also fixed. Register $255 is referred to as a
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@ -390,7 +392,7 @@ extern int target_flags;
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
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1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, \
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1, 1, 0, 0, 0, 1 \
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1, 1, 0, 0, 0, 1, 1 \
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}
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/* General registers are fixed and therefore "historically" marked
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@ -414,19 +416,23 @@ extern int target_flags;
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, \
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1, 1, 1, 1, 1, 1 \
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1, 1, 1, 1, 1, 1, 1 \
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}
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#define CONDITIONAL_REGISTER_USAGE mmix_conditional_register_usage ()
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/* No LOCAL_REGNO, INCOMING_REGNO or OUTGOING_REGNO, since those macros
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are not usable for MMIX: it doesn't have a fixed register window size.
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FIXME: Perhaps we should say something about $0..$15 may sometimes be
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the incoming $16..$31. Those macros need better documentation; it
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looks like they're just bogus and that FUNCTION_INCOMING_ARG_REGNO_P
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and FUNCTION_OUTGOING_VALUE should be used where they're used. For the
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/* No INCOMING_REGNO or OUTGOING_REGNO, since those macros are not usable
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for MMIX: it doesn't have a fixed register window size. FIXME: Perhaps
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we should say something about $0..$15 may sometimes be the incoming
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$16..$31. Those macros need better documentation; it looks like
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they're just bogus and that FUNCTION_INCOMING_ARG_REGNO_P and
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FUNCTION_OUTGOING_VALUE should be used where they're used. For the
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moment, do nothing; things seem to work anyway. */
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/* Defining LOCAL_REGNO is necessary in presence of prologue/epilogue,
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else GCC will be confused that those registers aren't saved and
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restored. */
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#define LOCAL_REGNO(REGNO) mmix_local_regno (REGNO)
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/* Node: Allocation Order */
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@ -474,7 +480,7 @@ extern int target_flags;
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232, 233, 234, 235, 236, 237, 238, 239, \
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240, 241, 242, 243, 244, 245, 246, \
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\
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254, 255, 256, 257, 261 \
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254, 255, 256, 257, 261, 262 \
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}
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/* As a convenience, we put this nearby, for ease of comparison.
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@ -529,7 +535,7 @@ extern int target_flags;
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216, 217, 218, 219, 220, 221, 222, 223, \
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224, 225, 226, 227, 228, 229, 230, \
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\
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254, 255, 256, 257, 261 \
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254, 255, 256, 257, 261, 262 \
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}
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/* The default one. */
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@ -573,8 +579,8 @@ enum reg_class
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{~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, 0x20}, \
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{0, 0, 0, 0, 0, 0, 0, 0, 0x10}, \
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{0, 0, 0, 0, 0, 0, 0, 0, 4}, \
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{0, 0, 0, 0, 0, 0, 0, 0, 0x3f}, \
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{~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, 0x3f}}
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{0, 0, 0, 0, 0, 0, 0, 0, 0x7f}, \
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{~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, 0x7f}}
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#define REGNO_REG_CLASS(REGNO) \
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((REGNO) <= MMIX_LAST_GENERAL_REGISTER \
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@ -1058,11 +1064,11 @@ typedef struct { int regs; int lib; int now_varargs; } CUMULATIVE_ARGS;
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"$232", "$233", "$234", "$235", "$236", "$237", "$238", "$239", \
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"$240", "$241", "$242", "$243", "$244", "$245", "$246", "$247", \
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"$248", "$249", "$250", "$251", "$252", "$253", "$254", "$255", \
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":rD", ":rE", ":rH", ":rJ", ":rR", "ap_!BAD!"}
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":rD", ":rE", ":rH", ":rJ", ":rR", "ap_!BAD!", ":rO"}
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#define ADDITIONAL_REGISTER_NAMES \
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{{"sp", 254}, {":sp", 254}, {"rD", 256}, {"rE", 257}, \
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{"rH", 258}, {"rJ", MMIX_rJ_REGNUM}}
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{"rH", 258}, {"rJ", MMIX_rJ_REGNUM}, {"rO", MMIX_rO_REGNUM}}
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#define PRINT_OPERAND(STREAM, X, CODE) \
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mmix_print_operand (STREAM, X, CODE)
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@ -988,7 +988,8 @@ DIVU %1,%1,%2\;GET %0,:rR\;NEGU %2,0,%0\;CSNN %0,$255,%2")
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in the call, and we set it back after every call (all but one setting
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will be optimized away), integrity is maintained. */
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operands[3]
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= get_hard_reg_initial_val (Pmode, MMIX_INCOMING_RETURN_ADDRESS_REGNUM);
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= mmix_get_hard_reg_initial_val (Pmode,
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MMIX_INCOMING_RETURN_ADDRESS_REGNUM);
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/* FIXME: There's a bug in gcc which causes NULL to be passed as
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operand[2] when we get out of registers, which later confuses gcc.
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@ -1014,7 +1015,8 @@ DIVU %1,%1,%2\;GET %0,:rR\;NEGU %2,0,%0\;CSNN %0,$255,%2")
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in the call, and we set it back after every call (all but one setting
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will be optimized away), integrity is maintained. */
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operands[4]
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= get_hard_reg_initial_val (Pmode, MMIX_INCOMING_RETURN_ADDRESS_REGNUM);
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= mmix_get_hard_reg_initial_val (Pmode,
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MMIX_INCOMING_RETURN_ADDRESS_REGNUM);
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/* FIXME: See 'call'. */
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if (operands[3] == NULL_RTX)
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@ -1067,11 +1069,30 @@ DIVU %1,%1,%2\;GET %0,:rR\;NEGU %2,0,%0\;CSNN %0,$255,%2")
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;; I hope untyped_call and untyped_return are not needed for MMIX.
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;; Users of Objective C will notice.
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(define_insn "return"
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; Generated by GCC.
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(define_expand "return"
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[(return)]
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"mmix_use_simple_return ()"
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"")
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; Generated by the epilogue expander.
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(define_insn "*expanded_return"
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[(return)]
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""
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"POP %.,0")
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(define_expand "prologue"
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[(const_int 0)]
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""
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"mmix_expand_prologue (); DONE;")
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; Note that the (return) from the expander itself is always the last insn
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; in the epilogue.
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(define_expand "epilogue"
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[(return)]
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""
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"mmix_expand_epilogue ();")
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(define_insn "nop"
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[(const_int 0)]
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""
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@ -1111,7 +1132,8 @@ DIVU %1,%1,%2\;GET %0,:rR\;NEGU %2,0,%0\;CSNN %0,$255,%2")
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"
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{
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operands[0]
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= get_hard_reg_initial_val (Pmode, MMIX_INCOMING_RETURN_ADDRESS_REGNUM);
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= mmix_get_hard_reg_initial_val (Pmode,
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MMIX_INCOMING_RETURN_ADDRESS_REGNUM);
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/* Mark this function as containing a landing-pad. */
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cfun->machine->has_landing_pad = 1;
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