PATCH: Fix builtin-constant.c on Thumb

[Mark Mitchell]

When CONSTANT_P_RTX was added to the compiler, nobody fixed
THUMB_LEGITIMATE_CONSTANT_P to accept CONSTANT_P_RTX.  That causes
builtin-constant.c to fail on Thumb.

Tested on arm-none-elf, compiling with -mthumb, applied on the
csl-arm-branch.

--
Mark Mitchell
CodeSourcery, LLC
mark@codesourcery.com

2003-12-30  Mark Mitchell  <mark@codesourcery.com>

	* config/arm/arm.h (THUMB_LEGITIMATE_CONSTANT_P): Accept
	CONSTANT_P_RTX.

Index: config/arm/arm.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/arm/arm.h,v
retrieving revision 1.210.2.8
diff -c -5 -p -r1.210.2.8 arm.h
*** config/arm/arm.h	31 Dec 2003 00:44:18 -0000	1.210.2.8
--- config/arm/arm.h	31 Dec 2003 03:29:27 -0000
*************** typedef struct
*** 2189,2198 ****
--- 2196,2206 ----
  #define ARM_LEGITIMATE_CONSTANT_P(X)	(flag_pic || ! label_mentioned_p (X))
  
  #define THUMB_LEGITIMATE_CONSTANT_P(X)	\
   (   GET_CODE (X) == CONST_INT		\
    || GET_CODE (X) == CONST_DOUBLE	\
+   || GET_CODE (X) == CONSTANT_P_RTX     \
    || CONSTANT_ADDRESS_P (X)		\
    || flag_pic)
  
  #define LEGITIMATE_CONSTANT_P(X)	\
    (TARGET_ARM ? ARM_LEGITIMATE_CONSTANT_P (X) : THUMB_LEGITIMATE_CONSTANT_P (X))