[PATCH, committed]: Fix middle-end/33157: cmov4.c fails on i686

Uros Bizjak ubizjak@gmail.com
Fri Aug 24 10:55:00 GMT 2007


Hello!

Late initialization of if_info structure cleared if_info.cond_earliest member.

Patch was bootstrapped and regression tested on i686-pc-linux-gnu and
is committed to SVN as obvious.

2007-08-24  Uros Bizjak  <ubizjak@gmail.com>

	PR middle-end/33157
	* ifcvt.c (noce_find_if_block): Do not clear if_info.cond_earliest
	field when initializing if_info structure.

Uros.

Index: ifcvt.c
===================================================================
--- ifcvt.c     (revision 127761)
+++ ifcvt.c     (working copy)
@@ -2650,6 +2650,7 @@ noce_find_if_block (basic_block test_bb,
   basic_block then_bb, else_bb, join_bb;
   bool then_else_reversed = false;
   rtx jump, cond;
+  rtx cond_earliest;
   struct noce_if_info if_info;

   /* We only ever should get here before reload.  */
@@ -2725,7 +2726,7 @@ noce_find_if_block (basic_block test_bb,

   /* If this is not a standard conditional jump, we can't parse it.  */
   cond = noce_get_condition (jump,
-                            &if_info.cond_earliest,
+                            &cond_earliest,
                             then_else_reversed);
   if (!cond)
     return FALSE;
@@ -2741,6 +2742,7 @@ noce_find_if_block (basic_block test_bb,
   if_info.else_bb = else_bb;
   if_info.join_bb = join_bb;
   if_info.cond = cond;
+  if_info.cond_earliest = cond_earliest;
   if_info.jump = jump;
   if_info.then_else_reversed = then_else_reversed;



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