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-rw-r--r--gcc/tm.texi4
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/tm.texi b/gcc/tm.texi
index 95a252b8b14..6a3ff5185d5 100644
--- a/gcc/tm.texi
+++ b/gcc/tm.texi
@@ -4731,7 +4731,9 @@ moves. This can cause significantly more instructions to be produced.
Therefore, do not set this macro non-zero if unaligned accesses only add a
cycle or two to the time for a memory access.
-If the value of this macro is always zero, it need not be defined.
+If the value of this macro is always zero, it need not be defined. If
+this macro is defined, it should produce a non-zero value when
+@code{STRICT_ALIGNMENT} is non-zero.
@findex DONT_REDUCE_ADDR
@item DONT_REDUCE_ADDR
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