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SH md fpu_switch[01] simplifications
- To: gcc-patches at gcc dot gnu dot org
- Subject: SH md fpu_switch[01] simplifications
- From: Alexandre Oliva <aoliva at redhat dot com>
- Date: 17 Aug 2000 09:03:35 -0300
- Organization: GCC Team, Red Hat
This patch allows us to use the fpu_switch[01] expanders in
fpscr_set_from_mem(). Ok to install?
Index: gcc/ChangeLog
from Alexandre Oliva <aoliva@redhat.com>
* config/sh/sh.md (fpu_switch0, fpu_switch1): Simplify.
* config/sh/sh.c (fpscr_set_from_mem): Use them.
Index: gcc/config/sh/sh.md
===================================================================
RCS file: /cvs/gcc/egcs/gcc/config/sh/sh.md,v
retrieving revision 1.38
diff -u -p -r1.38 sh.md
--- gcc/config/sh/sh.md 2000/08/07 09:58:29 1.38
+++ gcc/config/sh/sh.md 2000/08/17 11:58:50
@@ -3884,27 +3884,25 @@
;; ??? All patterns should have a type attribute.
(define_expand "fpu_switch0"
- [(set (match_operand:SI 0 "" "") (symbol_ref "__fpscr_values"))
- (set (match_dup 2) (match_dup 1))]
+ [(set (match_operand:SI 0 "" "") (match_dup 2))
+ (set (match_dup 1) (mem:PSI (match_dup 0)))]
""
"
{
- operands[1] = gen_rtx (MEM, PSImode, operands[0]);
- RTX_UNCHANGING_P (operands[1]) = 1;
- operands[2] = get_fpscr_rtx ();
+ operands[1] = get_fpscr_rtx ();
+ operands[2] = gen_rtx_SYMBOL_REF (SImode, \"__fpscr_values\");
}")
(define_expand "fpu_switch1"
- [(set (match_operand:SI 0 "" "") (symbol_ref "__fpscr_values"))
- (set (match_dup 1) (plus:SI (match_dup 0) (const_int 4)))
- (set (match_dup 3) (match_dup 2))]
+ [(set (match_operand:SI 0 "" "") (match_dup 2))
+ (set (match_dup 3) (plus:SI (match_dup 0) (const_int 4)))
+ (set (match_dup 1) (mem:PSI (match_dup 3)))]
""
"
{
- operands[1] = gen_reg_rtx (SImode);
- operands[2] = gen_rtx (MEM, PSImode, operands[1]);
- RTX_UNCHANGING_P (operands[2]) = 1;
- operands[3] = get_fpscr_rtx ();
+ operands[1] = get_fpscr_rtx ();
+ operands[2] = gen_rtx_SYMBOL_REF (SImode, \"__fpscr_values\");
+ operands[3] = no_new_pseudos ? operands[0] : gen_reg_rtx (SImode);
}")
(define_expand "movpsi"
Index: gcc/config/sh/sh.c
===================================================================
RCS file: /cvs/gcc/egcs/gcc/config/sh/sh.c,v
retrieving revision 1.57
diff -u -p -r1.57 sh.c
--- gcc/config/sh/sh.c 2000/08/07 09:58:29 1.57
+++ gcc/config/sh/sh.c 2000/08/17 11:58:55
@@ -5106,28 +5106,10 @@ fpscr_set_from_mem (mode, regs_live)
HARD_REG_SET regs_live;
{
enum attr_fp_mode fp_mode = mode;
- rtx i;
- rtx sym;
rtx addr_reg = get_free_reg (regs_live);
- sym = gen_rtx_SYMBOL_REF (SImode, "__fpscr_values");
- i = gen_rtx_SET (VOIDmode, addr_reg, sym);
- emit_insn (i);
- if (fp_mode == (TARGET_FPU_SINGLE ? FP_MODE_SINGLE : FP_MODE_DOUBLE))
- {
- rtx r = addr_reg;
- addr_reg = get_free_reg (regs_live);
- i = gen_rtx_SET (VOIDmode, addr_reg,
- gen_rtx_PLUS (Pmode, r, GEN_INT (4)));
- emit_insn (i);
- }
-
- i = gen_rtx_SET (VOIDmode,
- get_fpscr_rtx (),
- gen_rtx_MEM (PSImode, gen_rtx_POST_INC (Pmode, addr_reg)));
- i = emit_insn (i);
- REG_NOTES (i) = gen_rtx_EXPR_LIST (REG_DEAD, addr_reg, REG_NOTES (i));
- REG_NOTES (i) = gen_rtx_EXPR_LIST (REG_INC, addr_reg, REG_NOTES (i));
+ emit_insn ((fp_mode == (TARGET_FPU_SINGLE ? FP_MODE_SINGLE : FP_MODE_DOUBLE)
+ ? gen_fpu_switch1 : gen_fpu_switch0) (addr_reg));
}
/* Is the given character a logical line separator for the assembler? */
--
Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist *Please* write to mailing lists, not to me