(force_operand): Clarify comment to say what it can return.

From-SVN: r2526

diff --git a/gcc/expr.c b/gcc/expr.c
index 7f062ede82d3eab511d4a30a50a989546479d265..632c3505b7549ce89f7f257aca83ce29bdd53c49 100644 (file)
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -2911,7 +2911,9 @@ get_inner_reference (exp, pbitsize, pbitpos, poffset, pmode, punsignedp, pvolati
 /* Given an rtx VALUE that may contain additions and multiplications,
    return an equivalent value that just refers to a register or memory.
    This is done by generating instructions to perform the arithmetic
-   and returning a pseudo-register containing the value.  */
+   and returning a pseudo-register containing the value.
+
+   The returned value may be a REG, SUBREG, MEM or constant.  */
 
 rtx
 force_operand (value, target)