rtl.h (RTL_CHECK1, [...]): Const-ify.

	* rtl.h (RTL_CHECK1, RTL_CHECK2, RTL_CHECKC1, RTL_CHECKC2,
	RTVEC_ELT): Const-ify.

From-SVN: r51676

gcc/ChangeLog

+2002-03-31  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* rtl.h (RTL_CHECK1, RTL_CHECK2, RTL_CHECKC1, RTL_CHECKC2,
+	RTVEC_ELT): Const-ify.
+
 2002-04-01  Neil Booth  <neil@daikokuya.demon.co.uk>
 
 	* diagnostic.c: Include langhooks-def.h.

gcc/rtl.h

@@ -264,8 +264,8 @@ struct rtvec_def {
 /* The bit with a star outside the statement expr and an & inside is
    so that N can be evaluated only once.  */
 #define RTL_CHECK1(RTX, N, C1) __extension__				\
-(*({ rtx _rtx = (RTX); int _n = (N);					\
-     enum rtx_code _code = GET_CODE (_rtx);				\
+(*({ rtx const _rtx = (RTX); const int _n = (N);			\
+     const enum rtx_code _code = GET_CODE (_rtx);			\
      if (_n < 0 || _n >= GET_RTX_LENGTH (_code))			\
        rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__,		\
 				__FUNCTION__);				\
@@ -275,8 +275,8 @@ struct rtvec_def {
      &_rtx->fld[_n]; }))
 
 #define RTL_CHECK2(RTX, N, C1, C2) __extension__			\
-(*({ rtx _rtx = (RTX); int _n = (N);					\
-     enum rtx_code _code = GET_CODE (_rtx);				\
+(*({ rtx const _rtx = (RTX); const int _n = (N);			\
+     const enum rtx_code _code = GET_CODE (_rtx);			\
      if (_n < 0 || _n >= GET_RTX_LENGTH (_code))			\
        rtl_check_failed_bounds (_rtx, _n, __FILE__, __LINE__,		\
 				__FUNCTION__);				\
@@ -287,22 +287,22 @@ struct rtvec_def {
      &_rtx->fld[_n]; }))
 
 #define RTL_CHECKC1(RTX, N, C) __extension__				\
-(*({ rtx _rtx = (RTX); int _n = (N);					\
+(*({ rtx const _rtx = (RTX); const int _n = (N);			\
      if (GET_CODE (_rtx) != (C))					\
        rtl_check_failed_code1 (_rtx, (C), __FILE__, __LINE__,		\
 			       __FUNCTION__);				\
      &_rtx->fld[_n]; }))
 
 #define RTL_CHECKC2(RTX, N, C1, C2) __extension__			\
-(*({ rtx _rtx = (RTX); int _n = (N);					\
-     enum rtx_code _code = GET_CODE (_rtx);				\
+(*({ rtx const _rtx = (RTX); const int _n = (N);			\
+     const enum rtx_code _code = GET_CODE (_rtx);			\
      if (_code != (C1) && _code != (C2))				\
        rtl_check_failed_code2 (_rtx, (C1), (C2), __FILE__, __LINE__,	\
 			       __FUNCTION__); \
      &_rtx->fld[_n]; }))
 
 #define RTVEC_ELT(RTVEC, I) __extension__				\
-(*({ rtvec _rtvec = (RTVEC); int _i = (I);				\
+(*({ rtvec const _rtvec = (RTVEC); const int _i = (I);			\
      if (_i < 0 || _i >= GET_NUM_ELEM (_rtvec))				\
        rtvec_check_failed_bounds (_rtvec, _i, __FILE__, __LINE__,	\
 				  __FUNCTION__);			\