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-rw-r--r--gcc/builtins.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c
index b0cab51..fb7b537 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -951,7 +951,8 @@ expand_builtin_setjmp_receiver (rtx receiver_label ATTRIBUTE_UNUSED)
/* We must not allow the code we just generated to be reordered by
scheduling. Specifically, the update of the frame pointer must
- happen immediately, not later. */
+ happen immediately, not later. Similarly, we must block
+ (frame-related) register values to be used across this code. */
emit_insn (gen_blockage ());
}