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msp430.md (movsi_s): New.

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* config/msp430/msp430.md (movsi_s): New.  Special case for
storing a 20-bit symbol into a 32-bit register.
* config/msp430/msp430.c (msp430_subreg): Add support for it.
* config/msp430/predicates.md (msp430_symbol_operand): New.

From-SVN: r224145
This commit is contained in:
DJ Delorie 2015-06-05 01:00:05 -04:00 • committed by DJ Delorie
parent b1ada49be0
commit 14ae1d88b3
4 changed files with 31 additions and 0 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2015-06-04 DJ Delorie <dj@redhat.com>
* config/msp430/msp430.md (movsi_s): New. Special case for
storing a 20-bit symbol into a 32-bit register.
* config/msp430/msp430.c (msp430_subreg): Add support for it.
* config/msp430/predicates.md (msp430_symbol_operand): New.
2015-06-04 Sriraman Tallam <tmsriram@google.com>
* c-family/c-common.c (noplt): New attribute.

7
gcc/config/msp430/msp430.c
View file

@ -2374,6 +2374,13 @@ msp430_subreg (machine_mode mode, rtx r, machine_mode omode, int byte)
}
else if (GET_CODE (r) == MEM)
rv = adjust_address (r, mode, byte);
else if (GET_CODE (r) == SYMBOL_REF
&& (byte == 0 || byte == 2)
&& mode == HImode)
{
rv = gen_rtx_ZERO_EXTRACT (HImode, r, GEN_INT (16), GEN_INT (8*byte));
rv = gen_rtx_CONST (HImode, r);
}
else
rv = simplify_gen_subreg (mode, r, omode, byte);

13
gcc/config/msp430/msp430.md
View file

@ -214,6 +214,19 @@
""
)
(define_insn_and_split "movsi_s"
[(set (match_operand:SI 0 "nonimmediate_operand" "=rm")
(subreg:SI (match_operand:PSI 1 "msp430_symbol_operand" "i") 0))]
""
""
"reload_completed"
[(set (match_operand:HI 2 "nonimmediate_operand")
(match_operand:HI 4 "general_operand"))
(set (match_operand:HI 3 "nonimmediate_operand")
(match_operand:HI 5 "general_operand"))]
"msp430_split_movsi (operands);"
)
(define_insn_and_split "movsi_x"
[(set (match_operand:SI 0 "nonimmediate_operand" "=rm")
(match_operand:SI 1 "general_operand" "rmi"))]

4
gcc/config/msp430/predicates.md
View file

@ -82,3 +82,7 @@
(and (match_code "const_int")
(match_test (" INTVAL (op) >= 0
&& INTVAL (op) <= 15 "))))
(define_predicate "msp430_symbol_operand"
(match_code "symbol_ref")
)