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gcc/
[pf3gnuchains/gcc-fork.git]
/
gcc
/
tree-ssa-pre.c
diff --git
a/gcc/tree-ssa-pre.c
b/gcc/tree-ssa-pre.c
index
ac676cd
..
816aeb6
100644
(file)
--- a/
gcc/tree-ssa-pre.c
+++ b/
gcc/tree-ssa-pre.c
@@
-4347,6
+4347,10
@@
eliminate (void)
remove_phi_node (&gsi, false);
remove_phi_node (&gsi, false);
+ if (!bitmap_bit_p (inserted_exprs, SSA_NAME_VERSION (res))
+ && TREE_CODE (sprime) == SSA_NAME)
+ gimple_set_plf (SSA_NAME_DEF_STMT (sprime), NECESSARY, true);
+
if (!useless_type_conversion_p (TREE_TYPE (res), TREE_TYPE (sprime)))
sprime = fold_convert (TREE_TYPE (res), sprime);
stmt = gimple_build_assign (res, sprime);
if (!useless_type_conversion_p (TREE_TYPE (res), TREE_TYPE (sprime)))
sprime = fold_convert (TREE_TYPE (res), sprime);
stmt = gimple_build_assign (res, sprime);