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-rw-r--r--gcc/builtins.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c
index d544410cf0c..95f9494e242 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -1469,6 +1469,8 @@ expand_builtin_constant_p (exp)
case is not obvious, so emit (constant_p_rtx (ARGLIST)) and let CSE
get a chance to see if it can deduce whether ARGLIST is constant. */
+ current_function_calls_constant_p = 1;
+
tmp = expand_expr (arglist, NULL_RTX, VOIDmode, 0);
tmp = gen_rtx_CONSTANT_P_RTX (value_mode, tmp);
return tmp;