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-rw-r--r--gcc/fold-const.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index c5b29a4..25fd496 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -7168,6 +7168,19 @@ fold (expr)
return t;
}
+ case CALL_EXPR:
+ /* Check for a built-in function. */
+ if (TREE_CODE (TREE_OPERAND (expr, 0)) == ADDR_EXPR
+ && (TREE_CODE (TREE_OPERAND (TREE_OPERAND (expr, 0), 0))
+ == FUNCTION_DECL)
+ && DECL_BUILT_IN (TREE_OPERAND (TREE_OPERAND (expr, 0), 0)))
+ {
+ tree tmp = fold_builtin (expr);
+ if (tmp)
+ return tmp;
+ }
+ return t;
+
default:
return t;
} /* switch (code) */