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Fix big-endian code generation

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From-SVN: r50952
This commit is contained in:
Bernd Schmidt 2002-03-18 10:20:29 +00:00 committed by Nick Clifton
parent 6d62edc7f9
commit 5d5603e2cc
3 changed files with 31 additions and 15 deletions
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17
gcc/ChangeLog
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@ -1,3 +1,18 @@
2002-03-18 Bernd Schmidt <bernds@redhat.com>
* config/arm/arm.c (arm_gen_movstrqi): Use gen_lowpart instead
of gen_rtx_SUBREG.
(arm_reload_out_hi): Use gen_lowpart instead of
gen_rtx_SUBREG to access QImode components.
* config/arm/arm.md: Disable zero_extend split for QImode
subregs in BIG_ENDIAN mode.
(storehi_bigend): Match use of least significant byte.
(storeinthi): Remove extraneous SUBREG.
Add missing sonstruction of operands[2].
(movhi): Use gen_lowpart in place of gen_rtx_SUBREG.
(movqi): Use gen_lowpart in place of gen_rtx_SUBREG.
Replace gen_rtx (SUBREG) with gen_rtx_SUBREG.
2002-03-18 Aldy Hernandez <aldyh@redhat.com>
* config/rs6000/rs6000.h (PREDICATE_CODES): Add PARALLEL to
@ -4459,7 +4474,7 @@ Mon Feb 4 19:23:19 2002 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* config/arm/arm.c (arm_hard_regno_mode_ok): Allow any value in
any geenral register.
2001-02-04 Bernd Schmidt <bernds@redhat.com>
2001-02-04 Bernd Schmidt <bernds@redhat.com>s
* cfgrtl.c (force_nonfallthru_and_redirect): Don't try to redirect
the entry block.

14
gcc/config/arm/arm.c
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@ -4544,7 +4544,7 @@ arm_gen_movstrqi (operands)
RTX_UNCHANGING_P (mem) = dst_unchanging_p;
MEM_IN_STRUCT_P (mem) = dst_in_struct_p;
MEM_SCALAR_P (mem) = dst_scalar_p;
emit_move_insn (mem, gen_rtx_SUBREG (QImode, part_bytes_reg, 0));
emit_move_insn (mem, gen_lowpart (QImode, part_bytes_reg));
if (--last_bytes)
{
@ -4563,7 +4563,7 @@ arm_gen_movstrqi (operands)
RTX_UNCHANGING_P (mem) = dst_unchanging_p;
MEM_IN_STRUCT_P (mem) = dst_in_struct_p;
MEM_SCALAR_P (mem) = dst_scalar_p;
emit_move_insn (mem, gen_rtx_SUBREG (HImode, part_bytes_reg, 0));
emit_move_insn (mem, gen_lowpart (HImode, part_bytes_reg));
last_bytes -= 2;
if (last_bytes)
{
@ -4581,7 +4581,7 @@ arm_gen_movstrqi (operands)
RTX_UNCHANGING_P (mem) = dst_unchanging_p;
MEM_IN_STRUCT_P (mem) = dst_in_struct_p;
MEM_SCALAR_P (mem) = dst_scalar_p;
emit_move_insn (mem, gen_rtx_SUBREG (QImode, part_bytes_reg, 0));
emit_move_insn (mem, gen_lowpart (QImode, part_bytes_reg));
}
}
@ -5119,23 +5119,23 @@ arm_reload_out_hi (operands)
{
emit_insn (gen_movqi (gen_rtx_MEM (QImode,
plus_constant (base, offset + 1)),
gen_rtx_SUBREG (QImode, outval, 0)));
gen_lowpart (QImode, outval)));
emit_insn (gen_lshrsi3 (scratch,
gen_rtx_SUBREG (SImode, outval, 0),
GEN_INT (8)));
emit_insn (gen_movqi (gen_rtx_MEM (QImode, plus_constant (base, offset)),
gen_rtx_SUBREG (QImode, scratch, 0)));
gen_lowpart (QImode, scratch)));
}
else
{
emit_insn (gen_movqi (gen_rtx_MEM (QImode, plus_constant (base, offset)),
gen_rtx_SUBREG (QImode, outval, 0)));
gen_lowpart (QImode, outval)));
emit_insn (gen_lshrsi3 (scratch,
gen_rtx_SUBREG (SImode, outval, 0),
GEN_INT (8)));
emit_insn (gen_movqi (gen_rtx_MEM (QImode,
plus_constant (base, offset + 1)),
gen_rtx_SUBREG (QImode, scratch, 0)));
gen_lowpart (QImode, scratch)));
}
}

13
gcc/config/arm/arm.md
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@ -3386,7 +3386,7 @@
[(set (match_operand:SI 0 "s_register_operand" "")
(zero_extend:SI (subreg:QI (match_operand:SI 1 "" "") 0)))
(clobber (match_operand:SI 2 "s_register_operand" ""))]
"TARGET_ARM && (GET_CODE (operands[1]) != MEM)"
"TARGET_ARM && (GET_CODE (operands[1]) != MEM) && ! BYTES_BIG_ENDIAN"
[(set (match_dup 2) (match_dup 1))
(set (match_dup 0) (and:SI (match_dup 2) (const_int 255)))]
""
@ -4285,7 +4285,7 @@
[(set (match_dup 4) (match_dup 3))
(set (match_dup 2)
(ashiftrt:SI (match_operand 0 "" "") (const_int 8)))
(set (match_operand 1 "" "") (subreg:QI (match_dup 2) 0))]
(set (match_operand 1 "" "") (subreg:QI (match_dup 2) 3))]
"TARGET_ARM"
"
{
@ -4309,7 +4309,7 @@
(define_expand "storeinthi"
[(set (match_operand 0 "" "")
(subreg:QI (match_operand 1 "" "") 0))
(set (match_dup 3) (subreg:QI (match_dup 2) 0))]
(set (match_dup 3) (match_dup 2))]
"TARGET_ARM"
"
{
@ -4348,6 +4348,7 @@
operands[3] = adjust_address (op0, QImode, 1);
operands[0] = adjust_address (operands[0], QImode, 0);
operands[2] = gen_lowpart (QImode, operands[2]);
}"
)
@ -4410,7 +4411,7 @@
}
emit_insn (gen_movsi (reg, GEN_INT (val)));
operands[1] = gen_rtx_SUBREG (HImode, reg, 0);
operands[1] = gen_lowpart (HImode, reg);
}
else if (!arm_arch4)
{
@ -4807,7 +4808,7 @@
rtx reg = gen_reg_rtx (SImode);
emit_insn (gen_movsi (reg, operands[1]));
operands[1] = gen_rtx_SUBREG (QImode, reg, 0);
operands[1] = gen_lowpart (QImode, reg);
}
if (GET_CODE (operands[0]) == MEM)
operands[1] = force_reg (QImode, operands[1]);
@ -4850,7 +4851,7 @@
if (GET_CODE (operands[0]) != REG)
abort ();
operands[0] = gen_rtx (SUBREG, SImode, operands[0], 0);
operands[0] = gen_rtx_SUBREG (SImode, operands[0], 0);
emit_insn (gen_movsi (operands[0], operands[1]));
DONE;
}