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Fix for m68k -O0 libstdc++ compiler abort.

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* config/m68k/m68k.h (HARD_REGNO_MODE_OK): For FP regs, add REGNO >= 16
	check.  Add comment to document problems with TARGET_SUN_FPA version
	of this macro.
	* config/m68k/m68k.md (movxf+1): Support 'r'/'r' moves.

From-SVN: r23056
This commit is contained in:
Jim Wilson 1998-10-13 17:52:36 +00:00 • committed by Jim Wilson
parent 160a655e21
commit 619aeb9611
3 changed files with 28 additions and 11 deletions
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7
gcc/ChangeLog
View file

@ -1,3 +1,10 @@
Tue Oct 13 17:51:04 1998 Jim Wilson <wilson@cygnus.com>
* config/m68k/m68k.h (HARD_REGNO_MODE_OK): For FP regs, add REGNO >= 16
check. Add comment to document problems with TARGET_SUN_FPA version
of this macro.
* config/m68k/m68k.md (movxf+1): Support 'r'/'r' moves.
Tue Oct 13 17:46:18 1998 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* Makefile.in (gencheck.o): Depend on gansidecl.h.

9
gcc/config/m68k/m68k.h
View file

@ -471,8 +471,8 @@ extern int target_flags;
#define HARD_REGNO_MODE_OK(REGNO, MODE) \
(((REGNO) < 16 \
&& !((REGNO) < 8 && (REGNO) + GET_MODE_SIZE ((MODE)) / 4 > 8)) \
|| ((REGNO) < 24 \
&& !((REGNO) < 8 && (REGNO) + GET_MODE_SIZE (MODE) / 4 > 8)) \
|| ((REGNO) >= 16 && (REGNO) < 24 \
&& TARGET_68881 \
&& (GET_MODE_CLASS (MODE) == MODE_FLOAT \
|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)))
@ -486,6 +486,11 @@ extern int target_flags;
(apparently) hold whatever you feel like putting in them.
If using the fpa, don't put a double in d7/a0. */
/* ??? This is confused. The check to prohibit d7/a0 overlaps should always
be enabled regardless of whether TARGET_FPA is specified. It isn't clear
what the other d/a register checks are for. Every check using REGNO
actually needs to use a range, e.g. 24>=X<56 not <56. There is probably
no one using this code anymore. */
#define HARD_REGNO_MODE_OK(REGNO, MODE) \
(((REGNO) < 16 \
&& !(TARGET_FPA \

23
gcc/config/m68k/m68k.md
View file

@ -1224,8 +1224,8 @@
}")
(define_insn ""
[(set (match_operand:XF 0 "nonimmediate_operand" "=f,m,f,!r,!f")
(match_operand:XF 1 "nonimmediate_operand" "m,f,f,f,r"))]
[(set (match_operand:XF 0 "nonimmediate_operand" "=f,m,f,!r,!f,!r")
(match_operand:XF 1 "nonimmediate_operand" "m,f,f,f,r,!r"))]
"TARGET_68881"
"*
{
@ -1247,15 +1247,20 @@
return \"fmove%.x %1,%0\";
return \"fmove%.x %f1,%0\";
}
if (REG_P (operands[0]))
if (FP_REG_P (operands[1]))
{
output_asm_insn (\"fmove%.x %f1,%-\;move%.l %+,%0\", operands);
operands[0] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1);
output_asm_insn (\"move%.l %+,%0\", operands);
operands[0] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1);
return \"move%.l %+,%0\";
if (REG_P (operands[0]))
{
output_asm_insn (\"fmove%.x %f1,%-\;move%.l %+,%0\", operands);
operands[0] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1);
output_asm_insn (\"move%.l %+,%0\", operands);
operands[0] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1);
return \"move%.l %+,%0\";
}
/* Must be memory destination. */
return \"fmove%.x %f1,%0\";
}
return \"fmove%.x %f1,%0\";
return output_move_double (operands);
}
")