[PATCH] Fix PR41738 optabs expands rotate using wrong mode

Andy H hutchinsonandy@aim.com
Sat Oct 17 21:13:00 GMT 2009


The following patch corrects the mode of the shift count expression 
created by expand_binop and fixes PR41738

Tested on 4.5 head Native configuration  i686-pc-linux-gnu with no 
regressions.


Ok?


2009-10-17  Andy Hutchinson <hutchinsonandy@gcc.gnu.org>

   PR middle-end/41738
   * optabs.c (expand_binop): Make mode of shift count expression mode 
of shift count not target
   Remove indent nit.


Index: optabs.c
===================================================================
--- optabs.c    (revision 152955)
+++ optabs.c    (working copy)
@@ -1595,11 +1595,11 @@
       unsigned int bits = GET_MODE_BITSIZE (mode);
 
       if (CONST_INT_P (op1))
-    newop1 = GEN_INT (bits - INTVAL (op1));
+        newop1 = GEN_INT (bits - INTVAL (op1));
       else if (targetm.shift_truncation_mask (mode) == bits - 1)
-    newop1 = negate_rtx (mode, op1);
+        newop1 = negate_rtx (GET_MODE (op1), op1);
       else
-    newop1 = expand_binop (mode, sub_optab,
+        newop1 = expand_binop (GET_MODE (op1), sub_optab,
                    GEN_INT (bits), op1,
                    NULL_RTX, unsignedp, OPTAB_DIRECT);
                   





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