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re PR target/16719 ([ColdFire] Illegal move of byte itno address register causes compiler to ICE)

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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.

From-SVN: r101900
This commit is contained in:
Peter Barada 2005-07-11 23:32:01 +00:00 committed by Bernardo Innocenti
parent 8564e10e6e
commit 70028b6145
5 changed files with 50 additions and 9 deletions
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10
gcc/ChangeLog
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@ -1,3 +1,13 @@
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.

1
gcc/config/m68k/m68k-protos.h
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@ -54,6 +54,7 @@ extern int valid_dbcc_comparison_p_2 (rtx, enum machine_mode);
#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);

33
gcc/config/m68k/m68k.c
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@ -3360,3 +3360,36 @@ m68k_hard_regno_rename_ok (unsigned int old_reg ATTRIBUTE_UNUSED,
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;
}

13
gcc/config/m68k/m68k.h
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@ -260,15 +260,12 @@ Boston, MA 02110-1301, USA. */
#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 \

2
gcc/config/m68k/m68k.md
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@ -1851,7 +1851,7 @@
(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);")