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-rw-r--r--gcc-4.9/gcc/tree-core.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/tree-core.h b/gcc-4.9/gcc/tree-core.h
index bb89fee..77dca96 100644
--- a/gcc-4.9/gcc/tree-core.h
+++ b/gcc-4.9/gcc/tree-core.h
@@ -766,6 +766,16 @@ struct GTY(()) tree_base {
int length;
/* SSA version number. This field is only used with SSA_NAME. */
unsigned int version;
+
+ /* The following two fields are used for MEM_REF and TARGET_MEM_REF
+ expression trees and specify known data non-dependences. For
+ two memory references in a function they are known to not
+ alias if dependence_info.clique are equal and dependence_info.base
+ are distinct. */
+ struct {
+ unsigned short clique;
+ unsigned short base;
+ } dependence_info;
} GTY((skip(""))) u;
};