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* pa.c (shadd_operand): Newfunction. 

From-SVN: r2850
This commit is contained in:
Jeff Law 1992-12-08 09:54:51 -07:00
parent a603c4aa00
commit 9bb77117a9
2 changed files with 19 additions and 4 deletions
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15
gcc/config/pa/pa.c
View File

@ -2520,3 +2520,18 @@ function_label_operand (op, mode)
{
return GET_CODE (op) == SYMBOL_REF && FUNCTION_NAME_P (XSTR (op, 0));
}
/* Return 1 if OP is suitable for the second add operand (the unshifed
operand) in an shadd instruction. Allow CONST_INT to work around
a reload bug. */
int
shadd_operand (op, mode)
rtx op;
enum machine_mode mode;
{
if (GET_CODE (op) == REG)
return 1;
if (GET_CODE (op) == CONST_INT)
return 1;
return 0;
}

8
gcc/config/pa/pa.md
View File

@ -2039,13 +2039,13 @@
[(set_attr "type" "load")
(set_attr "length" "1")])
;; Using nonmemory_operand works around a bug in reload. For 2.4 fix
;; Using shadd_operand works around a bug in reload. For 2.4 fix
;; reload and use register_operand instead.
(define_insn ""
[(set (match_operand:SI 0 "register_operand" "=r")
(plus:SI (mult:SI (match_operand:SI 2 "register_operand" "r")
(const_int 2))
(match_operand:SI 1 "nonmemory_operand" "r")))]
(match_operand:SI 1 "shadd_operand" "r")))]
""
"sh1add %2,%1,%0")
@ -2053,7 +2053,7 @@
[(set (match_operand:SI 0 "register_operand" "=r")
(plus:SI (mult:SI (match_operand:SI 2 "register_operand" "r")
(const_int 4))
(match_operand:SI 1 "nonmemory_operand" "r")))]
(match_operand:SI 1 "shadd_operand" "r")))]
""
"sh2add %2,%1,%0")
@ -2061,7 +2061,7 @@
[(set (match_operand:SI 0 "register_operand" "=r")
(plus:SI (mult:SI (match_operand:SI 2 "register_operand" "r")
(const_int 8))
(match_operand:SI 1 "nonmemory_operand" "r")))]
(match_operand:SI 1 "shadd_operand" "r")))]
""
"sh3add %2,%1,%0")