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-rw-r--r--gcc/reload.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/reload.c b/gcc/reload.c
index dc45ea5e0f3..9c0836a53b7 100644
--- a/gcc/reload.c
+++ b/gcc/reload.c
@@ -6940,7 +6940,8 @@ find_inc_amount (rtx x, rtx inced)
}
/* Return 1 if register REGNO is the subject of a clobber in insn INSN.
- If SETS is nonzero, also consider SETs. */
+ If SETS is nonzero, also consider SETs. REGNO must refer to a hard
+ register. */
int
regno_clobbered_p (unsigned int regno, rtx insn, enum machine_mode mode,