ppc regression

Jeffrey A Law law@cygnus.com
Wed Jun 30 23:15:00 GMT 1999


  In message < 9906211814.AA50278@marc.watson.ibm.com >you write:
  > 	I was testing the wrong operand in case 2.
  > 
I brought this fix over to the branch.  I also installed this fix for a
regression exposed by libg++.

Basically the powerpc allows LO_SUM based addresses in DFmode.  So we need to
handle them in find_addr_reg.

[ The PA doesn't allow auto-inc or LO_SUM addressing in DF/DImode moves.

	* rs6000.md (find_addr_reg): Handle LO_SUM addresses.

Index: rs6000.c
===================================================================
RCS file: /egcs/carton/cvsfiles/egcs/gcc/config/rs6000/rs6000.c,v
retrieving revision 1.75
diff -c -3 -p -r1.75 rs6000.c
*** rs6000.c	1999/06/19 00:04:57	1.75
--- rs6000.c	1999/06/22 04:12:25
*************** struct rtx_def *
*** 5690,5695 ****
--- 5690,5698 ----
  find_addr_reg (addr)
       rtx addr;
  {
+   if (GET_CODE (addr) == LO_SUM)
+     addr = XEXP (addr, 0);
+ 
    while (GET_CODE (addr) == PLUS)
      {
        if (GET_CODE (XEXP (addr, 0)) == REG)




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