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arm.c (thumb_base_register_rtx_p): Don't allow virtual registers as base registers for sub-word operations.

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* arm.c (thumb_base_register_rtx_p): Don't allow virtual registers
as base registers for sub-word operations.
(thumb_legitimate_address_p): Simplify REG+REG test.

From-SVN: r74739
This commit is contained in:
Richard Earnshaw 2003-12-17 11:27:25 +00:00 committed by Richard Earnshaw
parent cbf22cc549
commit 07e582651d
2 changed files with 9 additions and 4 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2003-12-17 Richard Earnshaw <rearnsha@arm.com>
* arm.c (thumb_base_register_rtx_p): Don't allow virtual registers
as base registers for sub-word operations.
(thumb_legitimate_address_p): Simplify REG+REG test.
2003-12-17 Segher Boessenkool <boessen@de.ibm.com>
* opts.c (wrap_help): Fix overflow.

7
gcc/config/arm/arm.c
View File

@ -2868,7 +2868,7 @@ arm_legitimate_index_p (enum machine_mode mode, rtx index, int strict_p)
&& INTVAL (index) > -range);
}
/* Return nonzero if X is valid as an ARM state addressing register. */
/* Return nonzero if X is valid as an Thumb state base register. */
static int
thumb_base_register_rtx_p (rtx x, enum machine_mode mode, int strict_p)
{
@ -2883,10 +2883,11 @@ thumb_base_register_rtx_p (rtx x, enum machine_mode mode, int strict_p)
return THUMB_REGNO_MODE_OK_FOR_BASE_P (regno, mode);
return (regno <= LAST_LO_REGNUM
|| regno >= FIRST_PSEUDO_REGISTER
|| regno > LAST_VIRTUAL_REGISTER
|| regno == FRAME_POINTER_REGNUM
|| (GET_MODE_SIZE (mode) >= 4
&& (regno == STACK_POINTER_REGNUM
|| x >= FIRST_PSEUDO_REGISTER
|| x == hard_frame_pointer_rtx
|| x == arg_pointer_rtx)));
}
@ -2963,8 +2964,6 @@ thumb_legitimate_address_p (enum machine_mode mode, rtx x, int strict_p)
if (GET_MODE_SIZE (mode) <= 4
&& XEXP (x, 0) != frame_pointer_rtx
&& XEXP (x, 1) != frame_pointer_rtx
&& XEXP (x, 0) != virtual_stack_vars_rtx
&& XEXP (x, 1) != virtual_stack_vars_rtx
&& thumb_index_register_rtx_p (XEXP (x, 0), strict_p)
&& thumb_index_register_rtx_p (XEXP (x, 1), strict_p))
return 1;