OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

pa.c (legitimize_pic_address): Use UNSPEC_DLTIND14R to identify unspec used for loading address from DLT.

Browse Source 
* pa.c (legitimize_pic_address): Use UNSPEC_DLTIND14R to identify
	unspec used for loading address from DLT.
	* pa.md: Define constants for the uses of UNSPEC and UNSPEC_VOLATILE.
	Change all users of UNSPEC and UNSPEC_VOLATILE to use new constants.
	Don't use short code sequence when loading the address of a nonlocal
	label.
	(nonlocal_goto): New expander.
	(indirect_goto): New jump pattern for nonlocal gotos.
	(short_jump): Remove extra whitespace.
	(builtin_longjmp): Clobber memory and hard frame pointer.  Restore
	frame pointer via virtual_stack_vars_rtx when we have a nonlocal goto
	pattern.

From-SVN: r83003
This commit is contained in:
John David Anglin 2004-06-11 22:46:13 +00:00 committed by John David Anglin
parent 41c64ac012
commit 9839edf18d
3 changed files with 122 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
gcc/ChangeLog
View File

@ -1,3 +1,18 @@
2004-06-11 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
* pa.c (legitimize_pic_address): Use UNSPEC_DLTIND14R to identify
unspec used for loading address from DLT.
* pa.md: Define constants for the uses of UNSPEC and UNSPEC_VOLATILE.
Change all users of UNSPEC and UNSPEC_VOLATILE to use new constants.
Don't use short code sequence when loading the address of a nonlocal
label.
(nonlocal_goto): New expander.
(indirect_goto): New jump pattern for nonlocal gotos.
(short_jump): Remove extra whitespace.
(builtin_longjmp): Clobber memory and hard frame pointer. Restore
frame pointer via virtual_stack_vars_rtx when we have a nonlocal goto
pattern.
2004-06-11 Roger Sayle <roger@eyesopen.com>
* expmed.c (synth_mult): Add an additional MODE argument for the

2
gcc/config/pa/pa.c
View File

@ -904,7 +904,7 @@ legitimize_pic_address (rtx orig, enum machine_mode mode, rtx reg)
gen_rtx_LO_SUM (Pmode, tmp_reg,
gen_rtx_UNSPEC (Pmode,
gen_rtvec (1, orig),
0)));
UNSPEC_DLTIND14R)));
current_function_uses_pic_offset_table = 1;
MEM_NOTRAP_P (pic_ref) = 1;

117
gcc/config/pa/pa.md
View File

@ -26,6 +26,25 @@
;;- See file "rtl.def" for documentation on define_insn, match_*, et. al.
;; Uses of UNSPEC in this file:
(define_constants
[(UNSPEC_CFFC 0) ; canonicalize_funcptr_for_compare
(UNSPEC_GOTO 1) ; indirect_goto
(UNSPEC_DLTIND14R 2) ;
])
;; UNSPEC_VOLATILE:
(define_constants
[(UNSPECV_BLOCKAGE 0) ; blockage
(UNSPECV_DCACHE 1) ; dcacheflush
(UNSPECV_ICACHE 2) ; icacheflush
(UNSPECV_OPC 3) ; outline_prologue_call
(UNSPECV_OEC 4) ; outline_epilogue_call
(UNSPECV_LONGJMP 5) ; builtin_longjmp
])
;; Insn type. Used to default other attribute values.
;; type "unary" insns have one input operand (1) and one output operand (0)
@ -2632,6 +2651,7 @@
/* If we're trying to load the address of a label that happens to be
close, then we can use a shorter sequence. */
if (GET_CODE (operands[1]) == LABEL_REF
&& !LABEL_REF_NONLOCAL_P (operands[1])
&& INSN_ADDRESSES_SET_P ()
&& abs (INSN_ADDRESSES (INSN_UID (XEXP (operands[1], 0)))
- INSN_ADDRESSES (INSN_UID (insn))) < 8100)
@ -2666,6 +2686,7 @@
/* If we're trying to load the address of a label that happens to be
close, then we can use a shorter sequence. */
if (GET_CODE (operands[1]) == LABEL_REF
&& !LABEL_REF_NONLOCAL_P (operands[1])
&& INSN_ADDRESSES_SET_P ()
&& abs (INSN_ADDRESSES (INSN_UID (XEXP (operands[1], 0)))
- INSN_ADDRESSES (INSN_UID (insn))) < 8100)
@ -6787,7 +6808,7 @@
(set_attr "length" "4")])
(define_insn "blockage"
[(unspec_volatile [(const_int 2)] 0)]
[(unspec_volatile [(const_int 2)] UNSPECV_BLOCKAGE)]
""
""
[(set_attr "length" "0")])
@ -6828,6 +6849,62 @@
[(set_attr "type" "branch")
(set_attr "length" "4")])
;;; An indirect jump can be optimized to a direct jump. GAS for the
;;; SOM target doesn't allow branching to a label inside a function.
;;; We also don't correctly compute branch distances for labels
;;; outside the current function. Thus, we use an indirect jump can't
;;; be optimized to a direct jump for all targets. We assume that
;;; the branch target is in the same space (i.e., nested function
;;; jumping to a label in an outer function in the same translation
;;; unit).
(define_expand "nonlocal_goto"
[(use (match_operand 0 "general_operand" ""))
(use (match_operand 1 "general_operand" ""))
(use (match_operand 2 "general_operand" ""))
(use (match_operand 3 "general_operand" ""))]
""
{
rtx lab = operands[1];
rtx stack = operands[2];
rtx fp = operands[3];
lab = copy_to_reg (lab);
emit_insn (gen_rtx_CLOBBER (VOIDmode,
gen_rtx_MEM (BLKmode,
gen_rtx_SCRATCH (VOIDmode))));
emit_insn (gen_rtx_CLOBBER (VOIDmode,
gen_rtx_MEM (BLKmode,
hard_frame_pointer_rtx)));
/* Restore the frame pointer. The virtual_stack_vars_rtx is saved
instead of the hard_frame_pointer_rtx in the save area. As a
result, an extra instruction is needed to adjust for the offset
of the virtual stack variables and the frame pointer. */
if (GET_CODE (fp) != REG)
fp = force_reg (Pmode, fp);
emit_move_insn (virtual_stack_vars_rtx, fp);
emit_stack_restore (SAVE_NONLOCAL, stack, NULL_RTX);
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
/* Nonlocal goto jumps are only used between functions in the same
translation unit. Thus, we can avoid the extra overhead of an
interspace jump. */
emit_jump_insn (gen_indirect_goto (lab));
emit_barrier ();
DONE;
})
(define_insn "indirect_goto"
[(unspec [(match_operand 0 "register_operand" "=r")] UNSPEC_GOTO)]
"GET_MODE (operands[0]) == word_mode"
"bv%* %%r0(%0)"
[(set_attr "type" "branch")
(set_attr "length" "4")])
;;; This jump is used in branch tables where the insn length is fixed.
;;; The length of this insn is adjusted if the delay slot is not filled.
(define_insn "short_jump"
@ -8248,7 +8325,7 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
[(set (pc) (match_operand 0 "pmode_register_operand" "a"))
(clobber (reg:SI 2))]
"!TARGET_64BIT"
"ldsid (%%sr0,%0),%%r2\; mtsp %%r2,%%sr0\; be%* 0(%%sr0,%0)"
"ldsid (%%sr0,%0),%%r2\;mtsp %%r2,%%sr0\;be%* 0(%%sr0,%0)"
[(set_attr "type" "branch")
(set_attr "length" "12")])
@ -8261,7 +8338,7 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
(set_attr "length" "4")])
(define_expand "builtin_longjmp"
[(unspec_volatile [(match_operand 0 "register_operand" "r")] 3)]
[(unspec_volatile [(match_operand 0 "register_operand" "r")] UNSPECV_LONGJMP)]
""
"
{
@ -8273,8 +8350,26 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
(POINTER_SIZE * 2) / BITS_PER_UNIT));
rtx pv = gen_rtx_REG (Pmode, 1);
emit_insn (gen_rtx_CLOBBER (VOIDmode,
gen_rtx_MEM (BLKmode,
gen_rtx_SCRATCH (VOIDmode))));
emit_insn (gen_rtx_CLOBBER (VOIDmode,
gen_rtx_MEM (BLKmode,
hard_frame_pointer_rtx)));
/* Restore the frame pointer. The virtual_stack_vars_rtx is saved
instead of the hard_frame_pointer_rtx in the save area. We need
to adjust for the offset between these two values when we have
a nonlocal_goto pattern. When we don't have a nonlocal_goto
pattern, the receiver performs the adjustment. */
#ifdef HAVE_nonlocal_goto
if (HAVE_nonlocal_goto)
emit_move_insn (virtual_stack_vars_rtx, force_reg (Pmode, fp));
else
#endif
emit_move_insn (hard_frame_pointer_rtx, fp);
/* This bit is the same as expand_builtin_longjmp. */
emit_move_insn (hard_frame_pointer_rtx, fp);
emit_stack_restore (SAVE_NONLOCAL, stack, NULL_RTX);
emit_insn (gen_rtx_USE (VOIDmode, hard_frame_pointer_rtx));
emit_insn (gen_rtx_USE (VOIDmode, stack_pointer_rtx));
@ -8959,7 +9054,7 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
;; Operands 3 and 4 (icacheflush) are clobbered scratch registers.
(define_insn "dcacheflush"
[(const_int 1)
(unspec_volatile [(mem:BLK (scratch))] 0)
(unspec_volatile [(mem:BLK (scratch))] UNSPECV_DCACHE)
(use (match_operand 0 "pmode_register_operand" "r"))
(use (match_operand 1 "pmode_register_operand" "r"))
(use (match_operand 2 "pmode_register_operand" "r"))
@ -8977,7 +9072,7 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
(define_insn "icacheflush"
[(const_int 2)
(unspec_volatile [(mem:BLK (scratch))] 0)
(unspec_volatile [(mem:BLK (scratch))] UNSPECV_ICACHE)
(use (match_operand 0 "pmode_register_operand" "r"))
(use (match_operand 1 "pmode_register_operand" "r"))
(use (match_operand 2 "pmode_register_operand" "r"))
@ -8997,7 +9092,7 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
;; An out-of-line prologue.
(define_insn "outline_prologue_call"
[(unspec_volatile [(const_int 0)] 0)
[(unspec_volatile [(const_int 0)] UNSPECV_OPC)
(clobber (reg:SI 31))
(clobber (reg:SI 22))
(clobber (reg:SI 21))
@ -9047,7 +9142,7 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
;; An out-of-line epilogue.
(define_insn "outline_epilogue_call"
[(unspec_volatile [(const_int 1)] 0)
[(unspec_volatile [(const_int 1)] UNSPECV_OEC)
(use (reg:SI 29))
(use (reg:SI 28))
(clobber (reg:SI 31))
@ -9106,7 +9201,7 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
;; reliably compared to another function pointer. */
(define_expand "canonicalize_funcptr_for_compare"
[(set (reg:SI 26) (match_operand:SI 1 "register_operand" ""))
(parallel [(set (reg:SI 29) (unspec:SI [(reg:SI 26)] 0))
(parallel [(set (reg:SI 29) (unspec:SI [(reg:SI 26)] UNSPEC_CFFC))
(clobber (match_dup 2))
(clobber (reg:SI 26))
(clobber (reg:SI 22))
@ -9136,8 +9231,8 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
}
}")
(define_insn ""
[(set (reg:SI 29) (unspec:SI [(reg:SI 26)] 0))
(define_insn "*$$sh_func_adrs"
[(set (reg:SI 29) (unspec:SI [(reg:SI 26)] UNSPEC_CFFC))
(clobber (match_operand:SI 0 "register_operand" "=a"))
(clobber (reg:SI 26))
(clobber (reg:SI 22))