[PATCH] Fix PR / 17317

[PATCH] Fix PR / 17317

[Ramana Radhakrishnan]

Hi,

The patch inlined below fixes PR/ 17317 . The earlier definitions of 
REG_OK_FOR_BASE, REGNO_OK_FOR_BASE , REG_OK_FOR_INDEX, REGNO_OK_INDEX 
did not consider blink ( r31) as a valid base address. The documentation 
for the A4 does not contradict this.

The patch below is for the 3.4 branch and can also be applied to cvs head.

cheers
Ramana

ChangeLog:
2004-10-11: Ramana Radhakrishnan (ramana.radhakrishnan@codito.com)
arc.h :
	Fix PR/17317. Allow for blink to be used as a base register.


Index: arc.h
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/arc/arc.h,v
retrieving revision 1.68.4.1
diff -a -u -r1.68.4.1 arc.h
--- arc.h       9 Mar 2004 02:59:54 -0000       1.68.4.1
+++ arc.h       11 Oct 2004 04:51:32 -0000
@@ -463,9 +463,9 @@
     Since they use reg_renumber, they are safe only once reg_renumber
     has been allocated, which happens in local-alloc.c.  */
  #define REGNO_OK_FOR_BASE_P(REGNO) \
-((REGNO) < 29 || (unsigned) reg_renumber[REGNO] < 29)
+((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32)
  #define REGNO_OK_FOR_INDEX_P(REGNO) \
-((REGNO) < 29 || (unsigned) reg_renumber[REGNO] < 29)
+((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32)

  /* Given an rtx X being reloaded into a reg required to be
     in class CLASS, return the class of reg to actually use.
@@ -900,11 +900,11 @@
  /* Nonzero if X is a hard reg that can be used as an index
     or if it is a pseudo reg.  */
  #define REG_OK_FOR_INDEX_P(X) \
-((unsigned) REGNO (X) - 29 >= FIRST_PSEUDO_REGISTER - 29)
+((unsigned) REGNO (X) - 32 >= FIRST_PSEUDO_REGISTER - 32)
  /* Nonzero if X is a hard reg that can be used as a base reg
     or if it is a pseudo reg.  */
  #define REG_OK_FOR_BASE_P(X) \
-((unsigned) REGNO (X) - 29 >= FIRST_PSEUDO_REGISTER - 29)
+((unsigned) REGNO (X) - 32 >= FIRST_PSEUDO_REGISTER - 32)

  #else