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-rw-r--r--gcc/function.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/function.c b/gcc/function.c
index 4d0966f..0af5a69 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -3463,8 +3463,10 @@ assign_parms (fndecl, second_time)
internal_arg_pointer, offset_rtx));
/* If this is a memory ref that contains aggregate components,
- mark it as such for cse and loop optimize. */
+ mark it as such for cse and loop optimize. Likewise if it
+ is readonly. */
MEM_IN_STRUCT_P (stack_parm) = aggregate;
+ RTX_UNCHANGING_P (stack_parm) = TREE_READONLY (parm);
}
/* If this parameter was passed both in registers and in the stack,