* mn10300.c (notice_update_cc): Use CC_SET_ZN and CC_SET_ZNV.
* mn10300.h (CC_NO_CARRY): Define.
* mn10300.md: Use "set_zn" and "set_znv" to more accurately
describe cc0 status.
From-SVN: r14019
* mn10300.c (secondary_reload_class): Handle more cases where we
need secondary reloads.
(impossible_plus_operand): Accept anything that involves addition
of the stack pointer.
* mn10300.md (reload_insi): Always load the stack pointer into
the destination (which is always an address register).
* mn10300.h (STORE_FLAG_VALUE): Remove definition.
* xm-mn10300.h: Declare malloc, realloc, calloc and free.
From-SVN: r13973
* mn10300.c (expand_prologue): End the current sequence before
counting the tst insns in the current function. Start a new
one before emitting any prologue instructions.
* mn10300.h (REGISTER_MOVE_COST): Bump up cost of moves in the
same class.
* mn10300.md (untyped_call): New expander.
From-SVN: r13955
* mn10300.c (can_use_return_insn): Include outgoing argument
area in size computation.
(expand_prologue): Likewise. No longer diddle with sequences.
Put register saves just before outgoing argument area.
(expand_epilogue): Similarly.
(impossible_plus_operand): New function.
* mn10300.h (FRAME_POINTER_REQUIRED): Never require a frame pointer.
(ACCUMULATE_OUTGOING_ARGS, OUTGOING_REG_PARM_STACK_SPACE): Define.
(impossible_plus_operand): Declare.
* mn10300.md (reload_insi): New expander to handle pathological
reload cases.
(addsi3): Fix CC status.
* mn10300.h (FUNCTION_VALUE): Return addresses in $a0.
(FUNCTION_VALUE_REGNO_P): Corresponding changes.
* mn10300.md (call_value_internal): Allow output to be in an
address register.
From-SVN: r13903
* mn10300.h (RETURN_ADDR_RTX): Define.
* mn10300.c (count_tst_insns): New function.
(expand_prologue): Load zero into data and/or address registers
if any are free and the function has optimizable tst insns.
(output_tst): If a suitable register is known to have the
value zero, use it instead of searching for a suitable register.
* mn10300.h (zero_dreg, zero_areg): Declare.
(FRAME_POINTER_NEEDED): Frame pointers are not needed if the
outgoing argument size is zero.
* mn10300.md (movXX): Optimize loading zero i register if possible. Optimize loading a DF/DI mode value
into an address register from a constant memory address.
(addsi3): Provide alternative which doesn't require a matching
inout operand.
(return): Optimize consecutive return instructions.
From-SVN: r13845
* mn10300.c (can_use_return_insn): Add size of fixed stack space
for function calls into the size of the frame. */
(expand_prologue, expand_epilogue): Likewise.
(initial_offset): Corresponding changes..
* mn10300.h (OUTGOING_REG_PARM_STACK_SPACE): No longer define.
(STACK_POINTER_OFFSET): Define.
* mn10300.md (call, call_value expanders): Don't adjust the stack
pointer here anymore.
* mn10300.md (ashlsi3): Remove some alternatives which are no longer
needed or desired.
From-SVN: r13837
* ginclude/stdarg.h: Include va-mn10300.h.
* ginclude/varargs.h: Likewise.
* ginclude/va-mn10300.h: New file.
* mn10300/mn10300.c (expand_prologue): If current_function_varargs is
nonzero, then flush d0/d1 back into the stack.
(mn10300_builtin_saveregs): New function.
(function_arg, function_arg_partial_nregs): New functions.
(initial_offset): Tweak now that the RP save area is allocated
and deallocated around each call again.
* mn10300/mn10300.h (FIRST_PARM_OFFSET): Now 4.
(FRAME_POINTER_REQUIRED): Require a frame pointer for all non-leaf
functions.
(REG_PARM_STACK_SPACE): Now 8 bytes.
(FUNCTION_ARG_REGNO_P): Update for new parameter passing conventions.
(CUMULATIVE_ARGS, INIT_CUMULATIVE_ARGS): Likewise.
(FUNCTION_ARG_ADVANCE, FUNCTION_ARG): Likewise.
(FUNCTION_ARG_PARTIAL_NREGS): Likewise.
(TRAMPOLINE_TEMPLATE): Don't clobber d0 anymore.
(TRAMPOLINE_SIZE, INITIALIZE_TRAMPOLINE): Corresponding changes.
(EXPAND_BUILTIN_SAVEREGS): Define.
* mn10300/mn10300.md (call, call_value patterns): Allocate and
deallocate a stack slot for the return pointer around each call.
* mn10300/mn10300.h (RTX_COSTS): Refine.
(CASE_VALUES_THRESHHOLD, NO_FUNCTION_CSE): Likewise.
* mn10300/mn10300.c (output_tst): New function.
* mn10300/mn10300.md (movdi, movdf): Improve code to load constants
into registers.
(tst insns): Use output_tst to optimize some cases. Add versions to
encourage more zero extensions instead of sign extensions of HImode
and QImode values.
(divsi3, udivsi3): Remove patterns. Replaced by...
(divmodsi4, udivmodsi4): New expanders/patterns.
(andsi3): Optimize "and" operations with certain constants.
From-SVN: r13827
* mn10300/mn10300.md (cmpsi): Handle comparing a register with
itself by adding zero to the reg. Z bit for such an insn is
inverted.
* mn10300/mn10300.c (notice_update_cc): Handle CC_INVERT.
From-SVN: r13755
* mn10300/mn10300.c (const_costs): Remove unused function.
* mn10300/mn10300.h (CONST_COSTS): Rework to generate better code.
* mn10300/mn10300.c (print_operand): Handle 'H' and 'L' output
modifers for high/low part of a 64bit value.
* mn10300/mn10300.h (CONST_DOUBLE_OK_FOR_LETTER_P): Handle 'G'
(LEGITIMATE_CONSTANT_P): Allow any constant.
* mn10300/mn10300.md (movdi, movdf): Implement.
(adddi3, subdi3): New expanders and patterns.
* mn10300/mn10300.c (print_operand): Handle 'A' modifier for an
address which can't be simple register indirect.
* mn10300/mn10300.h (EXTRA_CONSTRAINT): Handle 'R' for bit ops.
* mn10300/mn10300.md: Add several patterns to test, set and clear
bitfields.
* mn10300/mn10300.c (can_use_return_insn): New function.
(expand_epilogue): Emit a RETURN insn if possible.
* mn10300/mn10300.md (return): New pattern.
* mn10300/mn10300.h (CONST_OK_FOR_LETTER_P): Handle 'N'.
* mn10300/mn10300.md (andsi3): Catch "and 255,dn" and "and 65535,dn"
which were not turned into zero_extend patterns.
* mn10300/mn10300.h (GO_IF_LEGITIMATE_ADDRESS): Handle symbolic
constant as an index/base too.
* mn10300/mn10300.md (movsi): Allow SP to be loaded/saved with
reg+d8 addresses.
* mn10300/mn10300.md (cmpsi): Allow second operand to be a constant.
(subsi3): Likewise.
* mn10300/mn10300.md (sign extension patterns): Fix thinko when
extending from memory.
* mn10300/mn10300.md (tst peepholes): Add peepholes for test/branch
based on N bit being set/clear and the data value being tested dies.
From-SVN: r13701
* mn10300/mn10300.c (expand_prologue): Rework so that eliminating
the frame pointer produces faster/smaller code.
(expand_epilogue): Likewise.
(initial_offset): New function for argument pointer and frame pointer
elimination.
* mn10300/mn10300.h (FIRST_PSEUDO_REGISTER): Bump to 10.
(FIXED_REGISTERS): Add argument pointer register, it's a fake fixed
register.
(CALL_USED_REGISTERS, REG_ALLOC_ORDER): Corresponding changes.
(REGNO_REG_CLASS, REG_CLASS_CONTENTS): Likewise.
(REG_OK_FOR_BASE_P, REGISTER_NAMES): Likewise.
(reg_class, REG_CLASS_NAMES): Delete unwanted DATA_OR_SP_REGS class.
(PREFERRED_OUTPUT_RELOAD_CLASS): Define.
(FIRST_PARM_OFFSET): No longer include register save area in
computation.
(STACK_POINTER_REGNUM): Is now register 9.
(ARG_POINTER_REGNUM): Is now register 8.
(FRAME_POINTER_REQUIRED): Refine.
(ELIMINABLE_REGS, INITIAL_ELIMINATION_OFFSET): Define.
(CAN_DEUG_WITHOUT_FP): Define.
* mn10300/mn10300.md (return_internal): Break into two patterns.
* mn10300/mn10300.h (CONST_OK_FOR_LETTER_P): Handle 'M' too.
(REGISTER_MOVE_COST): Fix errors and refine.
* mn10300/mn10300.c (notice_update_cc): SET_ZN_C0 insns leave the
overflow bit in an unuseable state. Rename CC_SET to CC_TST.
* mn10300/mn10300.md (cc attributes): "set" is gone, replaced by
"tst". Update attributes on various insns.
* mn10300/mn10300.md: Improve sign and zero extension instructions.
(ashlsi3): Improve. Handle address registers too.
(add peephole): Combine two consecutive adjustments of a register
into a single adjustment.
From-SVN: r13700
* mn10300/mn10300.c (expand_prologue): Rework to avoid unnecessary
"add" operations.
(expand_epilogue): Likewise.
* mn10300/mn10300.h (STARTING_FRAME_OFFSET): Is zero after the last
round of prologue/epilogue changes.
(FIRST_PARM_OFFSET): Is now 16 (-4 for REG_PARM_STACK_SPACE + 20 for
register save area).
(REG_PARM_STACK_SPACE): Define as 4 bytes.
(OUTGOING_REG_PARM_STACK_SPACE): Define so caller allocates it.
* mn10300/mn10300.md (call expander): Don't emit insns to adjust the
stack here anymore.
(call_value expander): Likewise.
* mn10300/mn10300.md (bCC patterns): Just use "bCC target" now that
the assembler handles relaxing.
From-SVN: r13696
* mn10300/mn10300.c (notice_update_cc): Enable this code.
* mn10300/mn10300.h (CC_OVERFLOW_UNUSABLE): Define.
* mn10300/mn10300.md (tstsi): Use "set_zn_c0" instead of "set"
for cc status.
(addsi3 pattern): Break "inc" into two different alternatives
since "inc dn" sets cc0, but "inc an" does not.
(multiply and divide patterns): Fix cc status.
(bCC, inverted bCC): Restore any comparison which needs the
overflow bits when CC_OVERFLOW_UNUSABLE is set.
(zero and sign extensions): Fix cc status.
(movm_store): Likewise.
From-SVN: r13337
* mn10300/mn10300.c (expand_epilogue): Restore registers in the
"ret" instruction instead of a separate movm instruction.
Support possible stack deallocation in "ret" instruction too.
* mn10300.md (return_internal): Use "ret" instead of "rets";
restore registers and deallocate stack as needed.
(load_movm): Delete unused pattern.
* mn10300/mn10300.h (SMALL_REGISTER_CLASSES): Define.
From-SVN: r13311
