+2005-07-12 Peter Barada <peter@the-baradas.com>
+
+ PR middle-end/16719
+ PR middle-end/18421
+ * config/m68k/m68k.h (HARD_REGNO_MODE_OK): Disallow bytes
+ in address registers.
+ * config/m68k/m68k.c (hard_regno_mode_ok): Likewise.
+ * config/m68k/m68k.md: Replace 's' with 'i' in 4th
+ alternative of addsi3_5200.
+
2005-07-11 Ian Lance Taylor <ian@airs.com>
* config/mips/mips.md (ffs<mode>2): Remove.
#endif /* RTX_CODE */
+extern bool m68k_regno_mode_ok (int, enum machine_mode);
extern int flags_in_68881 (void);
extern bool use_return_insn (void);
extern void override_options (void);
return 1;
}
+
+/* Value is true if hard register REGNO can hold a value of machine-mode MODE.
+ On the 68000, the cpu registers can hold any mode except bytes in address
+ registers, but the 68881 registers can hold only SFmode or DFmode. */
+bool
+m68k_regno_mode_ok (int regno, enum machine_mode mode)
+{
+ if (regno < 8)
+ {
+ /* Data Registers, can hold aggregate if fits in. */
+ if (regno + GET_MODE_SIZE (mode) / 4 <= 8)
+ return true;
+ }
+ else if (regno < 16)
+ {
+ /* Address Registers, can't hold bytes, can hold aggregate if
+ fits in. */
+ if (GET_MODE_SIZE (mode) == 1)
+ return false;
+ if (regno + GET_MODE_SIZE (mode) / 4 <= 16)
+ return true;
+ }
+ else if (regno < 24)
+ {
+ /* FPU registers, hold float or complex float of long double or
+ smaller. */
+ if ((GET_MODE_CLASS (mode) == MODE_FLOAT
+ || GET_MODE_CLASS (mode) == MODE_COMPLEX_FLOAT)
+ && GET_MODE_UNIT_SIZE (mode) <= 12)
+ return true;
+ }
+ return false;
+}
#define HARD_REGNO_RENAME_OK(OLD_REG, NEW_REG) \
m68k_hard_regno_rename_ok (OLD_REG, NEW_REG)
-/* On the m68k, the cpu registers can hold any mode but the 68881 registers
- can hold only SFmode or DFmode. */
+/* Value is true if hard register REGNO can hold a value of machine-mode MODE.
+ On the 68000, the cpu registers can hold any mode except bytes in
+ address registers, the 68881 registers can hold only SFmode or DFmode. */
+
#define HARD_REGNO_MODE_OK(REGNO, MODE) \
- (((REGNO) < 16 \
- && !((REGNO) < 8 && (REGNO) + GET_MODE_SIZE (MODE) / 4 > 8)) \
- || ((REGNO) >= 16 && (REGNO) < 24 \
- && (GET_MODE_CLASS (MODE) == MODE_FLOAT \
- || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \
- && GET_MODE_UNIT_SIZE (MODE) <= 12))
+ m68k_regno_mode_ok ((REGNO), (MODE))
#define MODES_TIEABLE_P(MODE1, MODE2) \
(! TARGET_68881 \
(define_insn "*addsi3_5200"
[(set (match_operand:SI 0 "nonimmediate_operand" "=m,?a,?a,r")
(plus:SI (match_operand:SI 1 "general_operand" "%0,a,rJK,0")
- (match_operand:SI 2 "general_src_operand" "d,rJK,a,mrIKLs")))]
+ (match_operand:SI 2 "general_src_operand" "d,rJK,a,mrIKLi")))]
"TARGET_COLDFIRE"
"* return output_addsi3 (operands);")