re PR rtl-optimization/17625 (ICE on legal (doloop creates shared RTL))

	PR rtl-optimization/17625
	* loop-doloop.c (doloop_modify): Unshare rtl before emitting it.

From-SVN: r88038

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index aac77b4166fb7276eaf17ec28be9f9a90ff5912e..c01942dbb70fb636ee6c41ba5e65d5244be42531 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2004-09-24  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>
+
+       PR rtl-optimization/17625
+       * loop-doloop.c (doloop_modify): Unshare rtl before emitting it.
+
 2004-09-24  Andrew Pinski  <pinskia@physics.uc.edu>
 
        PR tree-opt/17624

diff --git a/gcc/loop-doloop.c b/gcc/loop-doloop.c
index e463eeab89963488dcade1c7276ef66150f5b9f9..7b4f4d42b5f8adbeaa79794db23bc2bbc0525e80 100644 (file)
--- a/gcc/loop-doloop.c
+++ b/gcc/loop-doloop.c
@@ -292,7 +292,7 @@ doloop_modify (struct loop *loop, struct niter_desc *desc,
   if (GET_CODE (counter_reg) == PLUS)
     counter_reg = XEXP (counter_reg, 0);
 
-  count = desc->niter_expr;
+  count = copy_rtx (desc->niter_expr);
   increment_count = false;
   switch (GET_CODE (condition))
     {
@@ -345,7 +345,7 @@ doloop_modify (struct loop *loop, struct niter_desc *desc,
 
   if (desc->noloop_assumptions)
     {
-      rtx ass = desc->noloop_assumptions;
+      rtx ass = copy_rtx (desc->noloop_assumptions);
       basic_block preheader = loop_preheader_edge (loop)->src;
       basic_block set_zero
              = loop_split_edge_with (loop_preheader_edge (loop), NULL_RTX);